./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/test-easy11.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/test-easy11.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 dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:14:46,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:14:46,855 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:14:46,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:14:46,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:14:46,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:14:46,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:14:46,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:14:46,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:14:46,873 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:14:46,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:14:46,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:14:46,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:14:46,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:14:46,873 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:14:46,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:14:46,874 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:14:46,875 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:14:46,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:14:46,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:14:46,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:14:46,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:14:46,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:14:46,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:14:46,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:14:46,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:14:46,876 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 -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2025-02-08 14:14:47,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:14:47,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:14:47,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:14:47,144 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:14:47,144 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:14:47,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-02-08 14:14:48,328 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/394aae5b8/4fd9c695f1da4204b75a20b4adefa54b/FLAG56d09a5ba [2025-02-08 14:14:48,535 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:14:48,536 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-02-08 14:14:48,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/394aae5b8/4fd9c695f1da4204b75a20b4adefa54b/FLAG56d09a5ba [2025-02-08 14:14:48,900 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/394aae5b8/4fd9c695f1da4204b75a20b4adefa54b [2025-02-08 14:14:48,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:14:48,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:14:48,904 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:14:48,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:14:48,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:14:48,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:14:48" (1/1) ... [2025-02-08 14:14:48,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3290283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:48, skipping insertion in model container [2025-02-08 14:14:48,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:14:48" (1/1) ... [2025-02-08 14:14:48,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:14:49,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:14:49,025 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:14:49,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:14:49,044 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:14:49,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49 WrapperNode [2025-02-08 14:14:49,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:14:49,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:14:49,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:14:49,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:14:49,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,066 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2025-02-08 14:14:49,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:14:49,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:14:49,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:14:49,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:14:49,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,079 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 14:14:49,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,081 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:14:49,086 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:14:49,086 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:14:49,086 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:14:49,087 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (1/1) ... [2025-02-08 14:14:49,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:14:49,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:49,113 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 14:14:49,115 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 14:14:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:14:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:14:49,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:14:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:14:49,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:14:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:14:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:14:49,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:14:49,131 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 14:14:49,185 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:14:49,187 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:14:49,333 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:14:49,333 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:14:49,426 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:14:49,427 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:14:49,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:14:49 BoogieIcfgContainer [2025-02-08 14:14:49,427 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:14:49,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:14:49,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:14:49,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:14:49,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:14:48" (1/3) ... [2025-02-08 14:14:49,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb82cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:14:49, skipping insertion in model container [2025-02-08 14:14:49,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:49" (2/3) ... [2025-02-08 14:14:49,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb82cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:14:49, skipping insertion in model container [2025-02-08 14:14:49,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:14:49" (3/3) ... [2025-02-08 14:14:49,438 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2025-02-08 14:14:49,449 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:14:49,450 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy11.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-08 14:14:49,450 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:14:49,492 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:14:49,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2025-02-08 14:14:49,553 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-02-08 14:14:49,554 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:14:49,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 80 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-08 14:14:49,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2025-02-08 14:14:49,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2025-02-08 14:14:49,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:14:49,573 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;@72062b18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:14:49,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-08 14:14:49,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:14:49,578 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 14:14:49,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:14:49,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:49,579 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:14:49,579 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:49,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:49,583 INFO L85 PathProgramCache]: Analyzing trace with hash 209893511, now seen corresponding path program 1 times [2025-02-08 14:14:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:49,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981171044] [2025-02-08 14:14:49,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:49,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:14:49,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:14:49,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:49,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:49,782 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 14:14:49,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981171044] [2025-02-08 14:14:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981171044] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:49,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:14:49,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239451517] [2025-02-08 14:14:49,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:49,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:49,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:49,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:49,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:49,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:14:49,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 14:14:49,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:49,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:14:49,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:49,976 INFO L124 PetriNetUnfolderBase]: 173/330 cut-off events. [2025-02-08 14:14:49,976 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-02-08 14:14:49,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 330 events. 173/330 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1462 event pairs, 42 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 609. Up to 151 conditions per place. [2025-02-08 14:14:49,980 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 38 selfloop transitions, 5 changer transitions 2/52 dead transitions. [2025-02-08 14:14:49,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 209 flow [2025-02-08 14:14:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-02-08 14:14:49,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640625 [2025-02-08 14:14:49,992 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 4 states and 82 transitions. [2025-02-08 14:14:49,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 209 flow [2025-02-08 14:14:49,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:49,999 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 84 flow [2025-02-08 14:14:50,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2025-02-08 14:14:50,004 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-02-08 14:14:50,004 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 84 flow [2025-02-08 14:14:50,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 14:14:50,009 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:50,009 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:14:50,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:14:50,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:50,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 209893512, now seen corresponding path program 1 times [2025-02-08 14:14:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:50,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120581722] [2025-02-08 14:14:50,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:50,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:14:50,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:14:50,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:50,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:50,121 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 14:14:50,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:50,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120581722] [2025-02-08 14:14:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120581722] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:50,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:14:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84380767] [2025-02-08 14:14:50,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:50,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:50,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:50,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:50,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:50,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-02-08 14:14:50,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 14:14:50,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:50,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-02-08 14:14:50,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:50,255 INFO L124 PetriNetUnfolderBase]: 173/349 cut-off events. [2025-02-08 14:14:50,256 INFO L125 PetriNetUnfolderBase]: For 39/48 co-relation queries the response was YES. [2025-02-08 14:14:50,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 349 events. 173/349 cut-off events. For 39/48 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1640 event pairs, 34 based on Foata normal form. 21/339 useless extension candidates. Maximal degree in co-relation 514. Up to 139 conditions per place. [2025-02-08 14:14:50,258 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2025-02-08 14:14:50,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 235 flow [2025-02-08 14:14:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2025-02-08 14:14:50,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65625 [2025-02-08 14:14:50,260 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 84 flow. Second operand 4 states and 84 transitions. [2025-02-08 14:14:50,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 235 flow [2025-02-08 14:14:50,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:50,261 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 139 flow [2025-02-08 14:14:50,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2025-02-08 14:14:50,262 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2025-02-08 14:14:50,262 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 139 flow [2025-02-08 14:14:50,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 14:14:50,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:50,262 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:14:50,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:14:50,262 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:50,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:50,263 INFO L85 PathProgramCache]: Analyzing trace with hash 209893546, now seen corresponding path program 1 times [2025-02-08 14:14:50,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:50,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001742244] [2025-02-08 14:14:50,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:50,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:50,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:14:50,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:14:50,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:50,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:50,324 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 14:14:50,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001742244] [2025-02-08 14:14:50,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001742244] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:50,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:50,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748138386] [2025-02-08 14:14:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:50,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:50,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:50,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:50,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-08 14:14:50,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:50,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:50,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-08 14:14:50,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:50,493 INFO L124 PetriNetUnfolderBase]: 232/410 cut-off events. [2025-02-08 14:14:50,494 INFO L125 PetriNetUnfolderBase]: For 210/214 co-relation queries the response was YES. [2025-02-08 14:14:50,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 410 events. 232/410 cut-off events. For 210/214 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1847 event pairs, 36 based on Foata normal form. 20/407 useless extension candidates. Maximal degree in co-relation 958. Up to 271 conditions per place. [2025-02-08 14:14:50,500 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 43 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2025-02-08 14:14:50,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 291 flow [2025-02-08 14:14:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:14:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:14:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2025-02-08 14:14:50,503 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4875 [2025-02-08 14:14:50,503 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 139 flow. Second operand 5 states and 78 transitions. [2025-02-08 14:14:50,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 291 flow [2025-02-08 14:14:50,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:50,506 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 144 flow [2025-02-08 14:14:50,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2025-02-08 14:14:50,507 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-02-08 14:14:50,508 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 144 flow [2025-02-08 14:14:50,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:50,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:50,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:14:50,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:14:50,509 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:50,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2083234492, now seen corresponding path program 1 times [2025-02-08 14:14:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21616236] [2025-02-08 14:14:50,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:50,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:50,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:14:50,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:14:50,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:50,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:50,540 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 14:14:50,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:50,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21616236] [2025-02-08 14:14:50,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21616236] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:50,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:50,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:14:50,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808684126] [2025-02-08 14:14:50,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:50,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:14:50,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:50,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:14:50,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:14:50,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:50,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 14:14:50,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:50,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:50,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:50,622 INFO L124 PetriNetUnfolderBase]: 173/344 cut-off events. [2025-02-08 14:14:50,622 INFO L125 PetriNetUnfolderBase]: For 376/396 co-relation queries the response was YES. [2025-02-08 14:14:50,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 344 events. 173/344 cut-off events. For 376/396 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1612 event pairs, 97 based on Foata normal form. 36/352 useless extension candidates. Maximal degree in co-relation 558. Up to 235 conditions per place. [2025-02-08 14:14:50,625 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 33 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2025-02-08 14:14:50,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 242 flow [2025-02-08 14:14:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:14:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:14:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-02-08 14:14:50,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-02-08 14:14:50,627 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 144 flow. Second operand 3 states and 55 transitions. [2025-02-08 14:14:50,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 242 flow [2025-02-08 14:14:50,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:14:50,629 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 136 flow [2025-02-08 14:14:50,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2025-02-08 14:14:50,630 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2025-02-08 14:14:50,630 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 136 flow [2025-02-08 14:14:50,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 14:14:50,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:50,631 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:50,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:14:50,631 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:50,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash -158763595, now seen corresponding path program 1 times [2025-02-08 14:14:50,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:50,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987309365] [2025-02-08 14:14:50,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:50,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:50,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:14:50,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:14:50,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:50,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:50,667 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 14:14:50,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:50,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987309365] [2025-02-08 14:14:50,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987309365] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:50,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:50,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:14:50,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120617348] [2025-02-08 14:14:50,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:50,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:50,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:50,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:50,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:50,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:14:50,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 14:14:50,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:50,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:14:50,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:50,768 INFO L124 PetriNetUnfolderBase]: 178/332 cut-off events. [2025-02-08 14:14:50,768 INFO L125 PetriNetUnfolderBase]: For 321/341 co-relation queries the response was YES. [2025-02-08 14:14:50,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 332 events. 178/332 cut-off events. For 321/341 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1383 event pairs, 51 based on Foata normal form. 20/320 useless extension candidates. Maximal degree in co-relation 497. Up to 149 conditions per place. [2025-02-08 14:14:50,770 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 36 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2025-02-08 14:14:50,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 302 flow [2025-02-08 14:14:50,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-08 14:14:50,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-08 14:14:50,772 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 136 flow. Second operand 4 states and 76 transitions. [2025-02-08 14:14:50,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 302 flow [2025-02-08 14:14:50,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:50,774 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 177 flow [2025-02-08 14:14:50,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2025-02-08 14:14:50,776 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-02-08 14:14:50,776 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 177 flow [2025-02-08 14:14:50,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 14:14:50,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:50,776 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:50,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:14:50,776 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:50,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash -158763594, now seen corresponding path program 1 times [2025-02-08 14:14:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:50,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829963479] [2025-02-08 14:14:50,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:50,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:14:50,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:14:50,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:50,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:50,836 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 14:14:50,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829963479] [2025-02-08 14:14:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829963479] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:50,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:14:50,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593178485] [2025-02-08 14:14:50,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:50,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:50,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:50,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:50,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-02-08 14:14:50,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:50,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:50,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-02-08 14:14:50,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:50,935 INFO L124 PetriNetUnfolderBase]: 195/380 cut-off events. [2025-02-08 14:14:50,936 INFO L125 PetriNetUnfolderBase]: For 431/451 co-relation queries the response was YES. [2025-02-08 14:14:50,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 380 events. 195/380 cut-off events. For 431/451 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1674 event pairs, 54 based on Foata normal form. 30/394 useless extension candidates. Maximal degree in co-relation 615. Up to 161 conditions per place. [2025-02-08 14:14:50,939 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2025-02-08 14:14:50,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 409 flow [2025-02-08 14:14:50,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2025-02-08 14:14:50,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-02-08 14:14:50,941 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 177 flow. Second operand 4 states and 80 transitions. [2025-02-08 14:14:50,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 409 flow [2025-02-08 14:14:50,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 61 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:50,943 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 309 flow [2025-02-08 14:14:50,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2025-02-08 14:14:50,946 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2025-02-08 14:14:50,947 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 309 flow [2025-02-08 14:14:50,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:50,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:50,947 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:50,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:14:50,947 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:50,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash -158763560, now seen corresponding path program 1 times [2025-02-08 14:14:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:50,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857025850] [2025-02-08 14:14:50,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:50,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:14:50,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:14:50,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:50,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:50,982 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 14:14:50,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:50,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857025850] [2025-02-08 14:14:50,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857025850] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:50,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:50,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723469690] [2025-02-08 14:14:50,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:50,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:50,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:50,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:50,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:50,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-08 14:14:50,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:50,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:50,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-08 14:14:50,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:51,088 INFO L124 PetriNetUnfolderBase]: 254/428 cut-off events. [2025-02-08 14:14:51,088 INFO L125 PetriNetUnfolderBase]: For 653/685 co-relation queries the response was YES. [2025-02-08 14:14:51,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 428 events. 254/428 cut-off events. For 653/685 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1680 event pairs, 22 based on Foata normal form. 47/473 useless extension candidates. Maximal degree in co-relation 830. Up to 262 conditions per place. [2025-02-08 14:14:51,092 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 56 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2025-02-08 14:14:51,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 543 flow [2025-02-08 14:14:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:14:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:14:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2025-02-08 14:14:51,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-02-08 14:14:51,093 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 309 flow. Second operand 5 states and 74 transitions. [2025-02-08 14:14:51,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 543 flow [2025-02-08 14:14:51,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:51,095 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 304 flow [2025-02-08 14:14:51,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2025-02-08 14:14:51,096 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2025-02-08 14:14:51,097 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 304 flow [2025-02-08 14:14:51,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:51,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:51,097 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:51,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:14:51,097 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:51,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:51,097 INFO L85 PathProgramCache]: Analyzing trace with hash -533579608, now seen corresponding path program 1 times [2025-02-08 14:14:51,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:51,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446060302] [2025-02-08 14:14:51,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:51,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:51,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:14:51,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:14:51,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:51,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:51,158 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 14:14:51,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:51,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446060302] [2025-02-08 14:14:51,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446060302] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:51,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221568821] [2025-02-08 14:14:51,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:51,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:51,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:51,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:51,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:51,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:51,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:51,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:51,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:51,264 INFO L124 PetriNetUnfolderBase]: 174/329 cut-off events. [2025-02-08 14:14:51,264 INFO L125 PetriNetUnfolderBase]: For 695/717 co-relation queries the response was YES. [2025-02-08 14:14:51,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 329 events. 174/329 cut-off events. For 695/717 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1348 event pairs, 35 based on Foata normal form. 34/362 useless extension candidates. Maximal degree in co-relation 867. Up to 157 conditions per place. [2025-02-08 14:14:51,267 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 42 selfloop transitions, 24 changer transitions 0/73 dead transitions. [2025-02-08 14:14:51,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 582 flow [2025-02-08 14:14:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:14:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:14:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2025-02-08 14:14:51,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55625 [2025-02-08 14:14:51,268 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 304 flow. Second operand 5 states and 89 transitions. [2025-02-08 14:14:51,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 582 flow [2025-02-08 14:14:51,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 550 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:14:51,270 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 408 flow [2025-02-08 14:14:51,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2025-02-08 14:14:51,271 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-02-08 14:14:51,271 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 408 flow [2025-02-08 14:14:51,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:51,271 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:51,271 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:51,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:14:51,272 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:51,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash -626702879, now seen corresponding path program 1 times [2025-02-08 14:14:51,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:51,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952837666] [2025-02-08 14:14:51,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:51,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:51,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:14:51,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:14:51,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:51,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:51,296 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 14:14:51,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:51,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952837666] [2025-02-08 14:14:51,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952837666] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:51,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:51,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:14:51,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246502286] [2025-02-08 14:14:51,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:51,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:14:51,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:51,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:14:51,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:14:51,301 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:51,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 14:14:51,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:51,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:51,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:51,356 INFO L124 PetriNetUnfolderBase]: 174/314 cut-off events. [2025-02-08 14:14:51,357 INFO L125 PetriNetUnfolderBase]: For 1020/1040 co-relation queries the response was YES. [2025-02-08 14:14:51,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 314 events. 174/314 cut-off events. For 1020/1040 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1219 event pairs, 76 based on Foata normal form. 33/345 useless extension candidates. Maximal degree in co-relation 823. Up to 233 conditions per place. [2025-02-08 14:14:51,360 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 50 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2025-02-08 14:14:51,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 578 flow [2025-02-08 14:14:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:14:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:14:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-02-08 14:14:51,361 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-02-08 14:14:51,361 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 408 flow. Second operand 3 states and 52 transitions. [2025-02-08 14:14:51,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 578 flow [2025-02-08 14:14:51,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:51,365 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 393 flow [2025-02-08 14:14:51,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2025-02-08 14:14:51,365 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-02-08 14:14:51,365 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 393 flow [2025-02-08 14:14:51,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 14:14:51,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:51,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:51,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:14:51,366 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:51,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1697738476, now seen corresponding path program 1 times [2025-02-08 14:14:51,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:51,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411922513] [2025-02-08 14:14:51,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:51,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:51,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:51,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:51,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:51,451 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 14:14:51,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:51,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411922513] [2025-02-08 14:14:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411922513] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:51,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:51,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:51,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839191508] [2025-02-08 14:14:51,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:51,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:51,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:51,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:51,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:14:51,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 14:14:51,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:51,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:14:51,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:51,646 INFO L124 PetriNetUnfolderBase]: 256/477 cut-off events. [2025-02-08 14:14:51,647 INFO L125 PetriNetUnfolderBase]: For 1123/1133 co-relation queries the response was YES. [2025-02-08 14:14:51,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 477 events. 256/477 cut-off events. For 1123/1133 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2118 event pairs, 30 based on Foata normal form. 15/492 useless extension candidates. Maximal degree in co-relation 1033. Up to 140 conditions per place. [2025-02-08 14:14:51,649 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 37 changer transitions 0/92 dead transitions. [2025-02-08 14:14:51,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 92 transitions, 747 flow [2025-02-08 14:14:51,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:14:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:14:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2025-02-08 14:14:51,650 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2025-02-08 14:14:51,651 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 393 flow. Second operand 9 states and 158 transitions. [2025-02-08 14:14:51,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 92 transitions, 747 flow [2025-02-08 14:14:51,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:51,656 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 535 flow [2025-02-08 14:14:51,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=535, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2025-02-08 14:14:51,657 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2025-02-08 14:14:51,658 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 535 flow [2025-02-08 14:14:51,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 14:14:51,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:51,658 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:51,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:14:51,658 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:51,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1292228185, now seen corresponding path program 1 times [2025-02-08 14:14:51,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:51,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650530779] [2025-02-08 14:14:51,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:51,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:51,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:51,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:51,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:51,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:51,709 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 14:14:51,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:51,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650530779] [2025-02-08 14:14:51,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650530779] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:51,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:51,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743768277] [2025-02-08 14:14:51,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:51,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:51,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:51,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:51,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:51,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:51,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:51,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:51,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:51,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:51,868 INFO L124 PetriNetUnfolderBase]: 329/568 cut-off events. [2025-02-08 14:14:51,868 INFO L125 PetriNetUnfolderBase]: For 1989/1989 co-relation queries the response was YES. [2025-02-08 14:14:51,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 568 events. 329/568 cut-off events. For 1989/1989 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2406 event pairs, 62 based on Foata normal form. 10/577 useless extension candidates. Maximal degree in co-relation 1796. Up to 256 conditions per place. [2025-02-08 14:14:51,872 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 61 selfloop transitions, 38 changer transitions 0/101 dead transitions. [2025-02-08 14:14:51,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 1034 flow [2025-02-08 14:14:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:14:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:14:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2025-02-08 14:14:51,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48046875 [2025-02-08 14:14:51,873 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 535 flow. Second operand 8 states and 123 transitions. [2025-02-08 14:14:51,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 1034 flow [2025-02-08 14:14:51,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 894 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-08 14:14:51,878 INFO L231 Difference]: Finished difference. Result has 61 places, 77 transitions, 698 flow [2025-02-08 14:14:51,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=61, PETRI_TRANSITIONS=77} [2025-02-08 14:14:51,879 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2025-02-08 14:14:51,879 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 77 transitions, 698 flow [2025-02-08 14:14:51,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:51,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:51,879 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:51,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:14:51,879 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:51,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:51,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1280000525, now seen corresponding path program 2 times [2025-02-08 14:14:51,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:51,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662683876] [2025-02-08 14:14:51,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:51,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:51,885 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:51,888 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:51,889 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:51,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:51,930 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 14:14:51,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662683876] [2025-02-08 14:14:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662683876] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:51,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107495067] [2025-02-08 14:14:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:51,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:51,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:51,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:51,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:51,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:51,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 77 transitions, 698 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:51,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:51,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:51,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:52,084 INFO L124 PetriNetUnfolderBase]: 341/608 cut-off events. [2025-02-08 14:14:52,085 INFO L125 PetriNetUnfolderBase]: For 1701/1701 co-relation queries the response was YES. [2025-02-08 14:14:52,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 608 events. 341/608 cut-off events. For 1701/1701 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2613 event pairs, 74 based on Foata normal form. 10/617 useless extension candidates. Maximal degree in co-relation 2077. Up to 200 conditions per place. [2025-02-08 14:14:52,088 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 59 selfloop transitions, 42 changer transitions 0/103 dead transitions. [2025-02-08 14:14:52,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 1060 flow [2025-02-08 14:14:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:14:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:14:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2025-02-08 14:14:52,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2025-02-08 14:14:52,090 INFO L175 Difference]: Start difference. First operand has 61 places, 77 transitions, 698 flow. Second operand 8 states and 121 transitions. [2025-02-08 14:14:52,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 1060 flow [2025-02-08 14:14:52,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 1011 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:52,098 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 846 flow [2025-02-08 14:14:52,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=846, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2025-02-08 14:14:52,099 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2025-02-08 14:14:52,100 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 846 flow [2025-02-08 14:14:52,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:52,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:52,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:52,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 14:14:52,101 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:52,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1289261464, now seen corresponding path program 2 times [2025-02-08 14:14:52,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:52,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651815098] [2025-02-08 14:14:52,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:52,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:52,104 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:52,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:52,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:52,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:52,162 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 14:14:52,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651815098] [2025-02-08 14:14:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651815098] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:52,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:52,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:52,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592238310] [2025-02-08 14:14:52,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:52,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:52,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:52,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:52,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:52,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:14:52,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 14:14:52,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:52,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:14:52,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:52,371 INFO L124 PetriNetUnfolderBase]: 348/649 cut-off events. [2025-02-08 14:14:52,372 INFO L125 PetriNetUnfolderBase]: For 2768/2782 co-relation queries the response was YES. [2025-02-08 14:14:52,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2894 conditions, 649 events. 348/649 cut-off events. For 2768/2782 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3129 event pairs, 36 based on Foata normal form. 25/666 useless extension candidates. Maximal degree in co-relation 2487. Up to 300 conditions per place. [2025-02-08 14:14:52,376 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 56 changer transitions 2/122 dead transitions. [2025-02-08 14:14:52,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 122 transitions, 1397 flow [2025-02-08 14:14:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:14:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:14:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2025-02-08 14:14:52,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-08 14:14:52,378 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 846 flow. Second operand 8 states and 144 transitions. [2025-02-08 14:14:52,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 122 transitions, 1397 flow [2025-02-08 14:14:52,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 122 transitions, 1351 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:52,386 INFO L231 Difference]: Finished difference. Result has 76 places, 90 transitions, 1082 flow [2025-02-08 14:14:52,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1082, PETRI_PLACES=76, PETRI_TRANSITIONS=90} [2025-02-08 14:14:52,386 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2025-02-08 14:14:52,386 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 90 transitions, 1082 flow [2025-02-08 14:14:52,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 14:14:52,387 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:52,387 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:52,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 14:14:52,387 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:52,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:52,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1292234695, now seen corresponding path program 3 times [2025-02-08 14:14:52,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:52,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797329852] [2025-02-08 14:14:52,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:52,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:52,391 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:52,393 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:52,393 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:14:52,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:52,431 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 14:14:52,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:52,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797329852] [2025-02-08 14:14:52,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797329852] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:52,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:52,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:52,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132294728] [2025-02-08 14:14:52,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:52,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:52,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:52,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:52,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:52,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:52,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 90 transitions, 1082 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:52,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:52,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:52,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:52,577 INFO L124 PetriNetUnfolderBase]: 379/673 cut-off events. [2025-02-08 14:14:52,577 INFO L125 PetriNetUnfolderBase]: For 3358/3362 co-relation queries the response was YES. [2025-02-08 14:14:52,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3186 conditions, 673 events. 379/673 cut-off events. For 3358/3362 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3055 event pairs, 67 based on Foata normal form. 20/692 useless extension candidates. Maximal degree in co-relation 2895. Up to 172 conditions per place. [2025-02-08 14:14:52,582 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 62 selfloop transitions, 47 changer transitions 0/111 dead transitions. [2025-02-08 14:14:52,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 111 transitions, 1384 flow [2025-02-08 14:14:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:14:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:14:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2025-02-08 14:14:52,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2025-02-08 14:14:52,584 INFO L175 Difference]: Start difference. First operand has 76 places, 90 transitions, 1082 flow. Second operand 8 states and 119 transitions. [2025-02-08 14:14:52,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 111 transitions, 1384 flow [2025-02-08 14:14:52,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 111 transitions, 1147 flow, removed 4 selfloop flow, removed 9 redundant places. [2025-02-08 14:14:52,595 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 913 flow [2025-02-08 14:14:52,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=913, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2025-02-08 14:14:52,597 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2025-02-08 14:14:52,597 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 913 flow [2025-02-08 14:14:52,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:52,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:52,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:52,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 14:14:52,597 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:52,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash -978535464, now seen corresponding path program 3 times [2025-02-08 14:14:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760860763] [2025-02-08 14:14:52,598 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:52,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:52,602 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:52,605 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:52,605 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:14:52,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:52,658 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 14:14:52,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760860763] [2025-02-08 14:14:52,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760860763] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:52,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:52,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:52,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838718050] [2025-02-08 14:14:52,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:52,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:52,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:52,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:52,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:52,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 913 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:52,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:52,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:52,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:52,819 INFO L124 PetriNetUnfolderBase]: 413/760 cut-off events. [2025-02-08 14:14:52,819 INFO L125 PetriNetUnfolderBase]: For 2434/2438 co-relation queries the response was YES. [2025-02-08 14:14:52,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 760 events. 413/760 cut-off events. For 2434/2438 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3670 event pairs, 91 based on Foata normal form. 19/778 useless extension candidates. Maximal degree in co-relation 3061. Up to 360 conditions per place. [2025-02-08 14:14:52,824 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 49 changer transitions 3/113 dead transitions. [2025-02-08 14:14:52,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 113 transitions, 1322 flow [2025-02-08 14:14:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2025-02-08 14:14:52,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2025-02-08 14:14:52,825 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 913 flow. Second operand 6 states and 106 transitions. [2025-02-08 14:14:52,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 113 transitions, 1322 flow [2025-02-08 14:14:52,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 113 transitions, 1223 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-02-08 14:14:52,832 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 969 flow [2025-02-08 14:14:52,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=969, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2025-02-08 14:14:52,833 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 40 predicate places. [2025-02-08 14:14:52,833 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 969 flow [2025-02-08 14:14:52,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:52,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:52,833 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:52,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 14:14:52,833 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:52,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1289254625, now seen corresponding path program 1 times [2025-02-08 14:14:52,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:52,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725140577] [2025-02-08 14:14:52,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:52,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:52,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:52,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:52,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:52,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:52,880 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 14:14:52,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:52,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725140577] [2025-02-08 14:14:52,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725140577] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:52,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:52,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:52,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471333493] [2025-02-08 14:14:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:52,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:52,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:52,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:52,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:52,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 969 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:52,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:52,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:52,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:53,022 INFO L124 PetriNetUnfolderBase]: 415/754 cut-off events. [2025-02-08 14:14:53,023 INFO L125 PetriNetUnfolderBase]: For 2550/2558 co-relation queries the response was YES. [2025-02-08 14:14:53,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 754 events. 415/754 cut-off events. For 2550/2558 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3621 event pairs, 109 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 3083. Up to 328 conditions per place. [2025-02-08 14:14:53,027 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 46 changer transitions 0/111 dead transitions. [2025-02-08 14:14:53,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 1320 flow [2025-02-08 14:14:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:53,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2025-02-08 14:14:53,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2025-02-08 14:14:53,028 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 969 flow. Second operand 6 states and 98 transitions. [2025-02-08 14:14:53,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 1320 flow [2025-02-08 14:14:53,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 1233 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:53,037 INFO L231 Difference]: Finished difference. Result has 78 places, 92 transitions, 1066 flow [2025-02-08 14:14:53,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1066, PETRI_PLACES=78, PETRI_TRANSITIONS=92} [2025-02-08 14:14:53,038 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2025-02-08 14:14:53,038 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 92 transitions, 1066 flow [2025-02-08 14:14:53,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:53,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:53,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:53,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 14:14:53,039 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:53,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:53,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1280000194, now seen corresponding path program 1 times [2025-02-08 14:14:53,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:53,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308567166] [2025-02-08 14:14:53,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:53,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:53,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:53,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:53,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:53,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:53,099 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 14:14:53,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:53,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308567166] [2025-02-08 14:14:53,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308567166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:53,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:53,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:53,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778133872] [2025-02-08 14:14:53,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:53,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:53,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:53,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:53,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:53,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:53,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 92 transitions, 1066 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:53,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:53,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:53,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:53,266 INFO L124 PetriNetUnfolderBase]: 431/795 cut-off events. [2025-02-08 14:14:53,267 INFO L125 PetriNetUnfolderBase]: For 3106/3114 co-relation queries the response was YES. [2025-02-08 14:14:53,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3516 conditions, 795 events. 431/795 cut-off events. For 3106/3114 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3919 event pairs, 76 based on Foata normal form. 16/811 useless extension candidates. Maximal degree in co-relation 3226. Up to 389 conditions per place. [2025-02-08 14:14:53,272 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 51 changer transitions 2/121 dead transitions. [2025-02-08 14:14:53,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 1484 flow [2025-02-08 14:14:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:53,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2025-02-08 14:14:53,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2025-02-08 14:14:53,273 INFO L175 Difference]: Start difference. First operand has 78 places, 92 transitions, 1066 flow. Second operand 6 states and 109 transitions. [2025-02-08 14:14:53,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 1484 flow [2025-02-08 14:14:53,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 1462 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:53,284 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 1195 flow [2025-02-08 14:14:53,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1195, PETRI_PLACES=84, PETRI_TRANSITIONS=93} [2025-02-08 14:14:53,284 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2025-02-08 14:14:53,284 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 1195 flow [2025-02-08 14:14:53,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:53,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:53,285 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:53,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 14:14:53,285 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:53,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:53,286 INFO L85 PathProgramCache]: Analyzing trace with hash -967486734, now seen corresponding path program 2 times [2025-02-08 14:14:53,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:53,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624112937] [2025-02-08 14:14:53,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:53,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:53,289 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:53,291 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:53,292 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:53,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:53,347 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 14:14:53,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:53,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624112937] [2025-02-08 14:14:53,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624112937] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:53,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:53,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:53,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485737549] [2025-02-08 14:14:53,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:53,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:53,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:53,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:53,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:53,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:14:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 1195 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 14:14:53,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:53,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:14:53,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:53,528 INFO L124 PetriNetUnfolderBase]: 393/752 cut-off events. [2025-02-08 14:14:53,528 INFO L125 PetriNetUnfolderBase]: For 4453/4487 co-relation queries the response was YES. [2025-02-08 14:14:53,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3490 conditions, 752 events. 393/752 cut-off events. For 4453/4487 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3850 event pairs, 54 based on Foata normal form. 30/777 useless extension candidates. Maximal degree in co-relation 3188. Up to 399 conditions per place. [2025-02-08 14:14:53,533 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 57 selfloop transitions, 57 changer transitions 3/123 dead transitions. [2025-02-08 14:14:53,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 123 transitions, 1600 flow [2025-02-08 14:14:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:14:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:14:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2025-02-08 14:14:53,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2025-02-08 14:14:53,534 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 1195 flow. Second operand 8 states and 142 transitions. [2025-02-08 14:14:53,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 123 transitions, 1600 flow [2025-02-08 14:14:53,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 1531 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:53,545 INFO L231 Difference]: Finished difference. Result has 90 places, 94 transitions, 1288 flow [2025-02-08 14:14:53,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1288, PETRI_PLACES=90, PETRI_TRANSITIONS=94} [2025-02-08 14:14:53,545 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2025-02-08 14:14:53,545 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 94 transitions, 1288 flow [2025-02-08 14:14:53,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 14:14:53,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:53,546 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:53,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 14:14:53,546 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:53,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash -967486735, now seen corresponding path program 2 times [2025-02-08 14:14:53,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:53,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253592640] [2025-02-08 14:14:53,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:53,550 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:53,552 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:53,552 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:53,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:53,596 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 14:14:53,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:53,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253592640] [2025-02-08 14:14:53,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253592640] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:53,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:53,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:53,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705897846] [2025-02-08 14:14:53,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:53,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:53,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:53,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:53,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:53,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:53,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 94 transitions, 1288 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:53,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:53,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:53,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:53,732 INFO L124 PetriNetUnfolderBase]: 447/832 cut-off events. [2025-02-08 14:14:53,732 INFO L125 PetriNetUnfolderBase]: For 5215/5215 co-relation queries the response was YES. [2025-02-08 14:14:53,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 832 events. 447/832 cut-off events. For 5215/5215 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4150 event pairs, 111 based on Foata normal form. 12/843 useless extension candidates. Maximal degree in co-relation 3655. Up to 431 conditions per place. [2025-02-08 14:14:53,737 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 66 selfloop transitions, 42 changer transitions 2/112 dead transitions. [2025-02-08 14:14:53,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 112 transitions, 1637 flow [2025-02-08 14:14:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2025-02-08 14:14:53,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2025-02-08 14:14:53,738 INFO L175 Difference]: Start difference. First operand has 90 places, 94 transitions, 1288 flow. Second operand 6 states and 95 transitions. [2025-02-08 14:14:53,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 112 transitions, 1637 flow [2025-02-08 14:14:53,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 1493 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-02-08 14:14:53,754 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 1267 flow [2025-02-08 14:14:53,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1267, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2025-02-08 14:14:53,755 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2025-02-08 14:14:53,755 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 1267 flow [2025-02-08 14:14:53,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:53,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:53,755 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:53,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 14:14:53,755 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:53,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:53,756 INFO L85 PathProgramCache]: Analyzing trace with hash -978197545, now seen corresponding path program 3 times [2025-02-08 14:14:53,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:53,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490624219] [2025-02-08 14:14:53,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:53,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:53,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:53,762 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:53,762 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:14:53,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:53,798 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 14:14:53,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:53,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490624219] [2025-02-08 14:14:53,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490624219] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:53,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:53,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419107606] [2025-02-08 14:14:53,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:53,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:53,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:53,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:53,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:53,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:53,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 1267 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:53,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:53,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:53,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:53,908 INFO L124 PetriNetUnfolderBase]: 431/804 cut-off events. [2025-02-08 14:14:53,908 INFO L125 PetriNetUnfolderBase]: For 5018/5018 co-relation queries the response was YES. [2025-02-08 14:14:53,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3734 conditions, 804 events. 431/804 cut-off events. For 5018/5018 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3995 event pairs, 103 based on Foata normal form. 12/815 useless extension candidates. Maximal degree in co-relation 3525. Up to 303 conditions per place. [2025-02-08 14:14:53,913 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 64 selfloop transitions, 41 changer transitions 0/107 dead transitions. [2025-02-08 14:14:53,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 107 transitions, 1541 flow [2025-02-08 14:14:53,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2025-02-08 14:14:53,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2025-02-08 14:14:53,915 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 1267 flow. Second operand 6 states and 91 transitions. [2025-02-08 14:14:53,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 107 transitions, 1541 flow [2025-02-08 14:14:53,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 107 transitions, 1294 flow, removed 4 selfloop flow, removed 10 redundant places. [2025-02-08 14:14:53,929 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 1074 flow [2025-02-08 14:14:53,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1074, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2025-02-08 14:14:53,930 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2025-02-08 14:14:53,930 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 1074 flow [2025-02-08 14:14:53,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:14:53,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:53,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:53,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 14:14:53,931 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:53,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:53,931 INFO L85 PathProgramCache]: Analyzing trace with hash -966037659, now seen corresponding path program 1 times [2025-02-08 14:14:53,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:53,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723340111] [2025-02-08 14:14:53,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:53,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:53,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:53,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:53,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:53,973 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 14:14:53,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:53,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723340111] [2025-02-08 14:14:53,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723340111] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:53,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:53,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:53,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12294194] [2025-02-08 14:14:53,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:53,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:53,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:53,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:53,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:53,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:53,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 1074 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 14:14:53,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:53,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:53,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:54,068 INFO L124 PetriNetUnfolderBase]: 284/575 cut-off events. [2025-02-08 14:14:54,068 INFO L125 PetriNetUnfolderBase]: For 3018/3038 co-relation queries the response was YES. [2025-02-08 14:14:54,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2628 conditions, 575 events. 284/575 cut-off events. For 3018/3038 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2986 event pairs, 42 based on Foata normal form. 16/585 useless extension candidates. Maximal degree in co-relation 2443. Up to 345 conditions per place. [2025-02-08 14:14:54,072 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 42 changer transitions 0/101 dead transitions. [2025-02-08 14:14:54,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 1315 flow [2025-02-08 14:14:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:14:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:14:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-02-08 14:14:54,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 14:14:54,073 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 1074 flow. Second operand 5 states and 80 transitions. [2025-02-08 14:14:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 1315 flow [2025-02-08 14:14:54,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 1215 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-02-08 14:14:54,079 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 1042 flow [2025-02-08 14:14:54,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1042, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2025-02-08 14:14:54,079 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 46 predicate places. [2025-02-08 14:14:54,079 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 1042 flow [2025-02-08 14:14:54,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 14:14:54,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:54,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:54,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 14:14:54,079 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:54,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:54,080 INFO L85 PathProgramCache]: Analyzing trace with hash -967011504, now seen corresponding path program 3 times [2025-02-08 14:14:54,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:54,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263914300] [2025-02-08 14:14:54,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:54,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:54,083 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:54,084 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:54,084 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:14:54,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:54,125 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 14:14:54,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:54,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263914300] [2025-02-08 14:14:54,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263914300] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:54,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:54,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:54,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542044381] [2025-02-08 14:14:54,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:54,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:54,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:54,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:54,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:14:54,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 1042 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 14:14:54,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:54,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:14:54,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:54,284 INFO L124 PetriNetUnfolderBase]: 379/741 cut-off events. [2025-02-08 14:14:54,284 INFO L125 PetriNetUnfolderBase]: For 3099/3115 co-relation queries the response was YES. [2025-02-08 14:14:54,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3244 conditions, 741 events. 379/741 cut-off events. For 3099/3115 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3944 event pairs, 48 based on Foata normal form. 8/746 useless extension candidates. Maximal degree in co-relation 2989. Up to 345 conditions per place. [2025-02-08 14:14:54,291 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 55 selfloop transitions, 53 changer transitions 1/114 dead transitions. [2025-02-08 14:14:54,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 1415 flow [2025-02-08 14:14:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:14:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:14:54,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2025-02-08 14:14:54,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-02-08 14:14:54,295 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 1042 flow. Second operand 8 states and 136 transitions. [2025-02-08 14:14:54,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 1415 flow [2025-02-08 14:14:54,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 114 transitions, 1380 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:54,304 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 1144 flow [2025-02-08 14:14:54,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1144, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2025-02-08 14:14:54,304 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2025-02-08 14:14:54,304 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 1144 flow [2025-02-08 14:14:54,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 14:14:54,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:54,305 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:54,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 14:14:54,305 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:54,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash -739776470, now seen corresponding path program 1 times [2025-02-08 14:14:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:54,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813772611] [2025-02-08 14:14:54,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:54,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:54,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:14:54,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:54,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:54,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:54,333 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 14:14:54,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:54,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813772611] [2025-02-08 14:14:54,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813772611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:54,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080524023] [2025-02-08 14:14:54,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:54,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:54,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:54,336 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 14:14:54,338 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 14:14:54,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:14:54,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:54,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:54,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:54,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:54,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:54,418 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 14:14:54,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:54,451 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 14:14:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080524023] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:54,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 14:14:54,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-02-08 14:14:54,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786255366] [2025-02-08 14:14:54,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:54,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:54,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:54,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:54,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:54,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:54,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 1144 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:54,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:54,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:54,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:54,630 INFO L124 PetriNetUnfolderBase]: 480/913 cut-off events. [2025-02-08 14:14:54,630 INFO L125 PetriNetUnfolderBase]: For 4161/4161 co-relation queries the response was YES. [2025-02-08 14:14:54,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4021 conditions, 913 events. 480/913 cut-off events. For 4161/4161 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4795 event pairs, 50 based on Foata normal form. 13/926 useless extension candidates. Maximal degree in co-relation 3802. Up to 346 conditions per place. [2025-02-08 14:14:54,638 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 107 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2025-02-08 14:14:54,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 142 transitions, 1806 flow [2025-02-08 14:14:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:14:54,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:14:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2025-02-08 14:14:54,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2025-02-08 14:14:54,640 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 1144 flow. Second operand 7 states and 118 transitions. [2025-02-08 14:14:54,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 142 transitions, 1806 flow [2025-02-08 14:14:54,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1679 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-08 14:14:54,654 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 1298 flow [2025-02-08 14:14:54,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1298, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2025-02-08 14:14:54,654 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2025-02-08 14:14:54,654 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 1298 flow [2025-02-08 14:14:54,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:54,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:54,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:54,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:14:54,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-08 14:14:54,859 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:54,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1336651721, now seen corresponding path program 1 times [2025-02-08 14:14:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:54,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090813623] [2025-02-08 14:14:54,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:54,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:14:54,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:54,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:54,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:54,891 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 14:14:54,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:54,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090813623] [2025-02-08 14:14:54,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090813623] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547114488] [2025-02-08 14:14:54,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:54,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:54,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:54,895 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 14:14:54,897 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 14:14:54,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:14:54,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:54,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:54,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:54,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:54,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:54,946 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 14:14:54,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:54,975 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 14:14:54,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547114488] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:54,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 14:14:54,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-02-08 14:14:54,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149781393] [2025-02-08 14:14:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:54,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:54,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:54,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:14:54,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:54,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:54,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:54,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:54,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:55,127 INFO L124 PetriNetUnfolderBase]: 523/996 cut-off events. [2025-02-08 14:14:55,127 INFO L125 PetriNetUnfolderBase]: For 4947/4951 co-relation queries the response was YES. [2025-02-08 14:14:55,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4591 conditions, 996 events. 523/996 cut-off events. For 4947/4951 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5218 event pairs, 60 based on Foata normal form. 16/1012 useless extension candidates. Maximal degree in co-relation 4293. Up to 392 conditions per place. [2025-02-08 14:14:55,133 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 112 selfloop transitions, 43 changer transitions 0/157 dead transitions. [2025-02-08 14:14:55,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 157 transitions, 2016 flow [2025-02-08 14:14:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:14:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:14:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2025-02-08 14:14:55,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2025-02-08 14:14:55,134 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 1298 flow. Second operand 7 states and 115 transitions. [2025-02-08 14:14:55,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 157 transitions, 2016 flow [2025-02-08 14:14:55,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 157 transitions, 1973 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:55,146 INFO L231 Difference]: Finished difference. Result has 99 places, 124 transitions, 1600 flow [2025-02-08 14:14:55,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1600, PETRI_PLACES=99, PETRI_TRANSITIONS=124} [2025-02-08 14:14:55,147 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 66 predicate places. [2025-02-08 14:14:55,147 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 124 transitions, 1600 flow [2025-02-08 14:14:55,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:55,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:55,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:55,153 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 14:14:55,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:55,348 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:55,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1061484895, now seen corresponding path program 2 times [2025-02-08 14:14:55,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:55,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238654500] [2025-02-08 14:14:55,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:55,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:55,355 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:55,359 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:55,359 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:55,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:55,449 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 14:14:55,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238654500] [2025-02-08 14:14:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238654500] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355646422] [2025-02-08 14:14:55,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:55,452 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 14:14:55,485 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 14:14:55,497 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:55,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:55,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:55,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:55,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:55,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:55,551 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 14:14:55,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:14:55,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355646422] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:55,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:14:55,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2025-02-08 14:14:55,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7607349] [2025-02-08 14:14:55,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:55,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:55,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:55,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:55,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-08 14:14:55,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:55,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 124 transitions, 1600 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:55,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:55,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:55,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:55,752 INFO L124 PetriNetUnfolderBase]: 547/1032 cut-off events. [2025-02-08 14:14:55,752 INFO L125 PetriNetUnfolderBase]: For 6233/6233 co-relation queries the response was YES. [2025-02-08 14:14:55,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5153 conditions, 1032 events. 547/1032 cut-off events. For 6233/6233 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5473 event pairs, 77 based on Foata normal form. 12/1044 useless extension candidates. Maximal degree in co-relation 4885. Up to 272 conditions per place. [2025-02-08 14:14:55,759 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 145 selfloop transitions, 31 changer transitions 8/186 dead transitions. [2025-02-08 14:14:55,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 186 transitions, 2546 flow [2025-02-08 14:14:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:14:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:14:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2025-02-08 14:14:55,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-02-08 14:14:55,760 INFO L175 Difference]: Start difference. First operand has 99 places, 124 transitions, 1600 flow. Second operand 7 states and 120 transitions. [2025-02-08 14:14:55,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 186 transitions, 2546 flow [2025-02-08 14:14:55,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 186 transitions, 2503 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:55,781 INFO L231 Difference]: Finished difference. Result has 108 places, 138 transitions, 1828 flow [2025-02-08 14:14:55,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1828, PETRI_PLACES=108, PETRI_TRANSITIONS=138} [2025-02-08 14:14:55,782 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2025-02-08 14:14:55,782 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 138 transitions, 1828 flow [2025-02-08 14:14:55,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:55,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:55,782 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:55,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:14:55,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:55,987 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:55,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash 730640149, now seen corresponding path program 3 times [2025-02-08 14:14:55,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:55,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215755326] [2025-02-08 14:14:55,989 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:55,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:55,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:14:55,997 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:55,997 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:14:55,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:56,023 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 14:14:56,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215755326] [2025-02-08 14:14:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215755326] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:56,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:56,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:14:56,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950289819] [2025-02-08 14:14:56,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:56,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:56,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:56,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:56,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:56,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:56,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 138 transitions, 1828 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:56,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:56,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:56,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:56,284 INFO L124 PetriNetUnfolderBase]: 602/1158 cut-off events. [2025-02-08 14:14:56,284 INFO L125 PetriNetUnfolderBase]: For 8103/8103 co-relation queries the response was YES. [2025-02-08 14:14:56,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 1158 events. 602/1158 cut-off events. For 8103/8103 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6467 event pairs, 148 based on Foata normal form. 12/1170 useless extension candidates. Maximal degree in co-relation 5841. Up to 431 conditions per place. [2025-02-08 14:14:56,291 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 150 selfloop transitions, 66 changer transitions 4/222 dead transitions. [2025-02-08 14:14:56,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 222 transitions, 3104 flow [2025-02-08 14:14:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:14:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:14:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2025-02-08 14:14:56,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-08 14:14:56,293 INFO L175 Difference]: Start difference. First operand has 108 places, 138 transitions, 1828 flow. Second operand 8 states and 152 transitions. [2025-02-08 14:14:56,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 222 transitions, 3104 flow [2025-02-08 14:14:56,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 222 transitions, 3056 flow, removed 19 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:56,312 INFO L231 Difference]: Finished difference. Result has 117 places, 159 transitions, 2306 flow [2025-02-08 14:14:56,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2306, PETRI_PLACES=117, PETRI_TRANSITIONS=159} [2025-02-08 14:14:56,312 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 84 predicate places. [2025-02-08 14:14:56,312 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 159 transitions, 2306 flow [2025-02-08 14:14:56,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:56,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:56,313 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:56,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-08 14:14:56,313 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:56,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash -294356502, now seen corresponding path program 1 times [2025-02-08 14:14:56,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:56,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186505600] [2025-02-08 14:14:56,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:56,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:56,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:14:56,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:56,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:56,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:56,350 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 14:14:56,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186505600] [2025-02-08 14:14:56,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186505600] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43300674] [2025-02-08 14:14:56,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:56,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:56,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:56,353 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 14:14:56,354 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 14:14:56,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:14:56,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:56,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:56,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:56,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:56,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:56,398 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 14:14:56,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:56,423 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 14:14:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43300674] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:56,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 14:14:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-08 14:14:56,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937808482] [2025-02-08 14:14:56,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:56,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:56,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:56,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:14:56,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:56,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 159 transitions, 2306 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:56,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:56,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:56,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:56,618 INFO L124 PetriNetUnfolderBase]: 723/1411 cut-off events. [2025-02-08 14:14:56,618 INFO L125 PetriNetUnfolderBase]: For 10814/10818 co-relation queries the response was YES. [2025-02-08 14:14:56,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7750 conditions, 1411 events. 723/1411 cut-off events. For 10814/10818 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8403 event pairs, 86 based on Foata normal form. 17/1428 useless extension candidates. Maximal degree in co-relation 7281. Up to 428 conditions per place. [2025-02-08 14:14:56,627 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 142 selfloop transitions, 86 changer transitions 2/232 dead transitions. [2025-02-08 14:14:56,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 232 transitions, 3582 flow [2025-02-08 14:14:56,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:56,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:56,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2025-02-08 14:14:56,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2025-02-08 14:14:56,629 INFO L175 Difference]: Start difference. First operand has 117 places, 159 transitions, 2306 flow. Second operand 6 states and 118 transitions. [2025-02-08 14:14:56,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 232 transitions, 3582 flow [2025-02-08 14:14:56,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 232 transitions, 3503 flow, removed 23 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:56,653 INFO L231 Difference]: Finished difference. Result has 126 places, 183 transitions, 2893 flow [2025-02-08 14:14:56,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2893, PETRI_PLACES=126, PETRI_TRANSITIONS=183} [2025-02-08 14:14:56,654 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 93 predicate places. [2025-02-08 14:14:56,654 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 183 transitions, 2893 flow [2025-02-08 14:14:56,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:56,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:56,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:56,661 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 14:14:56,855 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,SelfDestructingSolverStorable26 [2025-02-08 14:14:56,855 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:56,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:56,856 INFO L85 PathProgramCache]: Analyzing trace with hash -127538504, now seen corresponding path program 2 times [2025-02-08 14:14:56,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:56,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213886694] [2025-02-08 14:14:56,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:56,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:56,860 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:56,863 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:56,863 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:56,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:56,949 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 14:14:56,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213886694] [2025-02-08 14:14:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213886694] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819047834] [2025-02-08 14:14:56,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:56,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:56,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:56,952 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 14:14:56,953 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 14:14:56,981 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:56,990 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:56,991 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:56,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:56,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:56,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:57,032 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 14:14:57,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:14:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819047834] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:57,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:14:57,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2025-02-08 14:14:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082744947] [2025-02-08 14:14:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:57,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:57,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:57,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-08 14:14:57,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:57,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 183 transitions, 2893 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:57,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:57,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:57,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:57,328 INFO L124 PetriNetUnfolderBase]: 693/1340 cut-off events. [2025-02-08 14:14:57,328 INFO L125 PetriNetUnfolderBase]: For 12827/12827 co-relation queries the response was YES. [2025-02-08 14:14:57,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7922 conditions, 1340 events. 693/1340 cut-off events. For 12827/12827 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7817 event pairs, 99 based on Foata normal form. 6/1346 useless extension candidates. Maximal degree in co-relation 7715. Up to 337 conditions per place. [2025-02-08 14:14:57,346 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 156 selfloop transitions, 62 changer transitions 7/227 dead transitions. [2025-02-08 14:14:57,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 227 transitions, 3718 flow [2025-02-08 14:14:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:14:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:14:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2025-02-08 14:14:57,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.546875 [2025-02-08 14:14:57,348 INFO L175 Difference]: Start difference. First operand has 126 places, 183 transitions, 2893 flow. Second operand 8 states and 140 transitions. [2025-02-08 14:14:57,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 227 transitions, 3718 flow [2025-02-08 14:14:57,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 227 transitions, 3663 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:57,392 INFO L231 Difference]: Finished difference. Result has 135 places, 186 transitions, 3072 flow [2025-02-08 14:14:57,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3072, PETRI_PLACES=135, PETRI_TRANSITIONS=186} [2025-02-08 14:14:57,392 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2025-02-08 14:14:57,393 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 186 transitions, 3072 flow [2025-02-08 14:14:57,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:57,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:57,393 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:57,402 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 14:14:57,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 14:14:57,594 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:57,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:57,594 INFO L85 PathProgramCache]: Analyzing trace with hash -974727069, now seen corresponding path program 4 times [2025-02-08 14:14:57,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:57,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735952608] [2025-02-08 14:14:57,594 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:14:57,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:57,598 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:57,601 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:57,602 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:14:57,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:57,637 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 14:14:57,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:57,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735952608] [2025-02-08 14:14:57,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735952608] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:57,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:57,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:14:57,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278441338] [2025-02-08 14:14:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:57,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:57,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:57,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:57,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:57,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:57,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 186 transitions, 3072 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:57,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:57,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:57,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:57,848 INFO L124 PetriNetUnfolderBase]: 635/1219 cut-off events. [2025-02-08 14:14:57,848 INFO L125 PetriNetUnfolderBase]: For 13774/13774 co-relation queries the response was YES. [2025-02-08 14:14:57,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7470 conditions, 1219 events. 635/1219 cut-off events. For 13774/13774 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6844 event pairs, 191 based on Foata normal form. 7/1226 useless extension candidates. Maximal degree in co-relation 7130. Up to 625 conditions per place. [2025-02-08 14:14:57,861 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 163 selfloop transitions, 29 changer transitions 8/202 dead transitions. [2025-02-08 14:14:57,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 202 transitions, 3536 flow [2025-02-08 14:14:57,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:14:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:14:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2025-02-08 14:14:57,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55625 [2025-02-08 14:14:57,863 INFO L175 Difference]: Start difference. First operand has 135 places, 186 transitions, 3072 flow. Second operand 5 states and 89 transitions. [2025-02-08 14:14:57,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 202 transitions, 3536 flow [2025-02-08 14:14:57,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 202 transitions, 3475 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:57,909 INFO L231 Difference]: Finished difference. Result has 136 places, 178 transitions, 2930 flow [2025-02-08 14:14:57,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2910, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2930, PETRI_PLACES=136, PETRI_TRANSITIONS=178} [2025-02-08 14:14:57,911 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 103 predicate places. [2025-02-08 14:14:57,911 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 178 transitions, 2930 flow [2025-02-08 14:14:57,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:57,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:57,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:57,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-08 14:14:57,911 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:57,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:57,912 INFO L85 PathProgramCache]: Analyzing trace with hash 804783755, now seen corresponding path program 5 times [2025-02-08 14:14:57,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:57,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439506929] [2025-02-08 14:14:57,912 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 14:14:57,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:57,916 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:57,919 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:57,919 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:57,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:57,949 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 14:14:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439506929] [2025-02-08 14:14:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439506929] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822334379] [2025-02-08 14:14:57,950 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 14:14:57,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:57,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:57,953 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 14:14:57,959 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 14:14:57,989 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:58,000 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:58,000 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:58,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:58,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:58,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:58,012 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 14:14:58,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:58,044 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 14:14:58,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822334379] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:58,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 14:14:58,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-08 14:14:58,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207175980] [2025-02-08 14:14:58,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:58,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:58,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:58,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:58,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:14:58,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:58,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 178 transitions, 2930 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:58,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:58,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:58,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:58,284 INFO L124 PetriNetUnfolderBase]: 641/1262 cut-off events. [2025-02-08 14:14:58,285 INFO L125 PetriNetUnfolderBase]: For 14235/14235 co-relation queries the response was YES. [2025-02-08 14:14:58,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 1262 events. 641/1262 cut-off events. For 14235/14235 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7216 event pairs, 81 based on Foata normal form. 12/1274 useless extension candidates. Maximal degree in co-relation 7333. Up to 348 conditions per place. [2025-02-08 14:14:58,292 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 138 selfloop transitions, 99 changer transitions 5/244 dead transitions. [2025-02-08 14:14:58,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 244 transitions, 4200 flow [2025-02-08 14:14:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:58,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2025-02-08 14:14:58,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2025-02-08 14:14:58,293 INFO L175 Difference]: Start difference. First operand has 136 places, 178 transitions, 2930 flow. Second operand 6 states and 118 transitions. [2025-02-08 14:14:58,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 244 transitions, 4200 flow [2025-02-08 14:14:58,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 244 transitions, 4130 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-08 14:14:58,322 INFO L231 Difference]: Finished difference. Result has 137 places, 201 transitions, 3571 flow [2025-02-08 14:14:58,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3571, PETRI_PLACES=137, PETRI_TRANSITIONS=201} [2025-02-08 14:14:58,322 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2025-02-08 14:14:58,322 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 201 transitions, 3571 flow [2025-02-08 14:14:58,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:58,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:58,322 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:58,330 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 14:14:58,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:58,523 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:58,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:58,524 INFO L85 PathProgramCache]: Analyzing trace with hash -692563616, now seen corresponding path program 3 times [2025-02-08 14:14:58,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:58,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843444777] [2025-02-08 14:14:58,524 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:58,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:58,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:58,531 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:58,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 14:14:58,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:58,617 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 14:14:58,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:58,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843444777] [2025-02-08 14:14:58,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843444777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:58,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965622422] [2025-02-08 14:14:58,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:58,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:58,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:58,621 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 14:14:58,629 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 14:14:58,674 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:58,687 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:58,687 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 14:14:58,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:58,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:58,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:58,728 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 14:14:58,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:58,771 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 14:14:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965622422] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:58,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 14:14:58,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2025-02-08 14:14:58,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193081089] [2025-02-08 14:14:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:58,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:58,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:58,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:58,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-08 14:14:58,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:58,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 201 transitions, 3571 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:58,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:58,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:58,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:58,973 INFO L124 PetriNetUnfolderBase]: 561/1113 cut-off events. [2025-02-08 14:14:58,973 INFO L125 PetriNetUnfolderBase]: For 15201/15201 co-relation queries the response was YES. [2025-02-08 14:14:58,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7146 conditions, 1113 events. 561/1113 cut-off events. For 15201/15201 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6186 event pairs, 106 based on Foata normal form. 13/1125 useless extension candidates. Maximal degree in co-relation 6840. Up to 408 conditions per place. [2025-02-08 14:14:58,980 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 153 selfloop transitions, 75 changer transitions 1/231 dead transitions. [2025-02-08 14:14:58,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 231 transitions, 4243 flow [2025-02-08 14:14:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2025-02-08 14:14:58,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-02-08 14:14:58,981 INFO L175 Difference]: Start difference. First operand has 137 places, 201 transitions, 3571 flow. Second operand 6 states and 117 transitions. [2025-02-08 14:14:58,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 231 transitions, 4243 flow [2025-02-08 14:14:59,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 231 transitions, 4180 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-02-08 14:14:59,022 INFO L231 Difference]: Finished difference. Result has 141 places, 197 transitions, 3724 flow [2025-02-08 14:14:59,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3308, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3724, PETRI_PLACES=141, PETRI_TRANSITIONS=197} [2025-02-08 14:14:59,023 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 108 predicate places. [2025-02-08 14:14:59,024 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 197 transitions, 3724 flow [2025-02-08 14:14:59,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:59,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:59,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:59,032 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 14:14:59,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:59,225 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:59,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:59,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1147999638, now seen corresponding path program 4 times [2025-02-08 14:14:59,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:59,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642336133] [2025-02-08 14:14:59,226 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:14:59,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:59,229 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:59,230 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:59,231 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:14:59,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:59,259 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 14:14:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:59,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642336133] [2025-02-08 14:14:59,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642336133] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:59,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:59,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:14:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443400120] [2025-02-08 14:14:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:59,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:59,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:59,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:59,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:59,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 197 transitions, 3724 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:59,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:59,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:59,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:59,478 INFO L124 PetriNetUnfolderBase]: 552/1097 cut-off events. [2025-02-08 14:14:59,478 INFO L125 PetriNetUnfolderBase]: For 17467/17467 co-relation queries the response was YES. [2025-02-08 14:14:59,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7347 conditions, 1097 events. 552/1097 cut-off events. For 17467/17467 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6104 event pairs, 91 based on Foata normal form. 10/1106 useless extension candidates. Maximal degree in co-relation 6890. Up to 375 conditions per place. [2025-02-08 14:14:59,484 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 176 selfloop transitions, 36 changer transitions 5/219 dead transitions. [2025-02-08 14:14:59,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 219 transitions, 4323 flow [2025-02-08 14:14:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:14:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:14:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2025-02-08 14:14:59,486 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2025-02-08 14:14:59,486 INFO L175 Difference]: Start difference. First operand has 141 places, 197 transitions, 3724 flow. Second operand 7 states and 115 transitions. [2025-02-08 14:14:59,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 219 transitions, 4323 flow [2025-02-08 14:14:59,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 219 transitions, 4268 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:59,517 INFO L231 Difference]: Finished difference. Result has 147 places, 193 transitions, 3663 flow [2025-02-08 14:14:59,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3663, PETRI_PLACES=147, PETRI_TRANSITIONS=193} [2025-02-08 14:14:59,517 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 114 predicate places. [2025-02-08 14:14:59,517 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 193 transitions, 3663 flow [2025-02-08 14:14:59,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:59,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:59,518 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:59,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-02-08 14:14:59,518 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:59,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash -525745618, now seen corresponding path program 5 times [2025-02-08 14:14:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:59,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592831276] [2025-02-08 14:14:59,519 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 14:14:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:59,522 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:59,525 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:59,526 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:59,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:59,547 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 14:14:59,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:59,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592831276] [2025-02-08 14:14:59,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592831276] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:59,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:59,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:14:59,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386863734] [2025-02-08 14:14:59,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:59,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:59,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:59,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:59,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:59,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:59,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 193 transitions, 3663 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:59,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:59,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:59,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:59,719 INFO L124 PetriNetUnfolderBase]: 493/965 cut-off events. [2025-02-08 14:14:59,720 INFO L125 PetriNetUnfolderBase]: For 16207/16207 co-relation queries the response was YES. [2025-02-08 14:14:59,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6601 conditions, 965 events. 493/965 cut-off events. For 16207/16207 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5102 event pairs, 79 based on Foata normal form. 6/970 useless extension candidates. Maximal degree in co-relation 6281. Up to 338 conditions per place. [2025-02-08 14:14:59,726 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 140 selfloop transitions, 55 changer transitions 3/200 dead transitions. [2025-02-08 14:14:59,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 200 transitions, 3935 flow [2025-02-08 14:14:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:14:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:14:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-02-08 14:14:59,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49609375 [2025-02-08 14:14:59,727 INFO L175 Difference]: Start difference. First operand has 147 places, 193 transitions, 3663 flow. Second operand 8 states and 127 transitions. [2025-02-08 14:14:59,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 200 transitions, 3935 flow [2025-02-08 14:14:59,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 200 transitions, 3788 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-02-08 14:14:59,758 INFO L231 Difference]: Finished difference. Result has 149 places, 179 transitions, 3380 flow [2025-02-08 14:14:59,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3380, PETRI_PLACES=149, PETRI_TRANSITIONS=179} [2025-02-08 14:14:59,759 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 116 predicate places. [2025-02-08 14:14:59,759 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 179 transitions, 3380 flow [2025-02-08 14:14:59,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:59,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:59,759 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:59,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-02-08 14:14:59,760 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:14:59,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:59,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1372934183, now seen corresponding path program 6 times [2025-02-08 14:14:59,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:59,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579503415] [2025-02-08 14:14:59,760 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 14:14:59,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:59,763 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:59,765 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:59,766 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 14:14:59,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:59,826 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 14:14:59,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:59,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579503415] [2025-02-08 14:14:59,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579503415] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:59,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447362440] [2025-02-08 14:14:59,826 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 14:14:59,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:59,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:59,828 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 14:14:59,830 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 14:14:59,853 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 2 equivalence classes. [2025-02-08 14:14:59,861 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:14:59,861 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 14:14:59,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:59,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:59,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:59,888 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 14:14:59,888 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:14:59,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447362440] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:59,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:14:59,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2025-02-08 14:14:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631907265] [2025-02-08 14:14:59,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:59,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:59,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:59,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:59,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-08 14:14:59,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:14:59,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 179 transitions, 3380 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:14:59,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:59,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:14:59,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:00,093 INFO L124 PetriNetUnfolderBase]: 442/866 cut-off events. [2025-02-08 14:15:00,093 INFO L125 PetriNetUnfolderBase]: For 15004/15004 co-relation queries the response was YES. [2025-02-08 14:15:00,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5968 conditions, 866 events. 442/866 cut-off events. For 15004/15004 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4437 event pairs, 69 based on Foata normal form. 7/872 useless extension candidates. Maximal degree in co-relation 5887. Up to 287 conditions per place. [2025-02-08 14:15:00,097 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 125 selfloop transitions, 50 changer transitions 5/182 dead transitions. [2025-02-08 14:15:00,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 182 transitions, 3578 flow [2025-02-08 14:15:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:15:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:15:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2025-02-08 14:15:00,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2025-02-08 14:15:00,098 INFO L175 Difference]: Start difference. First operand has 149 places, 179 transitions, 3380 flow. Second operand 7 states and 109 transitions. [2025-02-08 14:15:00,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 182 transitions, 3578 flow [2025-02-08 14:15:00,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 182 transitions, 3443 flow, removed 11 selfloop flow, removed 10 redundant places. [2025-02-08 14:15:00,122 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 3111 flow [2025-02-08 14:15:00,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3111, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2025-02-08 14:15:00,123 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2025-02-08 14:15:00,123 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 3111 flow [2025-02-08 14:15:00,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:15:00,123 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:00,123 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:00,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 14:15:00,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:00,326 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:00,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1070188413, now seen corresponding path program 1 times [2025-02-08 14:15:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:00,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295610553] [2025-02-08 14:15:00,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:00,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:15:00,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:00,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:00,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:00,419 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 14:15:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295610553] [2025-02-08 14:15:00,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295610553] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390184418] [2025-02-08 14:15:00,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:00,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:00,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:00,421 INFO L229 MonitoredProcess]: Starting monitored process 10 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 14:15:00,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 14:15:00,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:15:00,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:00,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:00,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:00,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:15:00,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:00,585 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 14:15:00,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:15:00,688 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 14:15:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390184418] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:15:00,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:15:00,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-08 14:15:00,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010105523] [2025-02-08 14:15:00,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:15:00,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 14:15:00,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:00,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 14:15:00,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2025-02-08 14:15:00,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2025-02-08 14:15:00,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 3111 flow. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 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 14:15:00,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:00,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2025-02-08 14:15:00,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:02,851 INFO L124 PetriNetUnfolderBase]: 1153/2275 cut-off events. [2025-02-08 14:15:02,851 INFO L125 PetriNetUnfolderBase]: For 37296/37316 co-relation queries the response was YES. [2025-02-08 14:15:02,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15701 conditions, 2275 events. 1153/2275 cut-off events. For 37296/37316 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14914 event pairs, 54 based on Foata normal form. 68/2337 useless extension candidates. Maximal degree in co-relation 15083. Up to 440 conditions per place. [2025-02-08 14:15:02,864 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 357 changer transitions 7/554 dead transitions. [2025-02-08 14:15:02,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 554 transitions, 9613 flow [2025-02-08 14:15:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-02-08 14:15:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2025-02-08 14:15:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 717 transitions. [2025-02-08 14:15:02,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2948190789473684 [2025-02-08 14:15:02,868 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 3111 flow. Second operand 76 states and 717 transitions. [2025-02-08 14:15:02,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 554 transitions, 9613 flow [2025-02-08 14:15:02,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 554 transitions, 9384 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 14:15:02,942 INFO L231 Difference]: Finished difference. Result has 217 places, 412 transitions, 8561 flow [2025-02-08 14:15:02,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3006, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=8561, PETRI_PLACES=217, PETRI_TRANSITIONS=412} [2025-02-08 14:15:02,942 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 184 predicate places. [2025-02-08 14:15:02,943 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 412 transitions, 8561 flow [2025-02-08 14:15:02,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 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 14:15:02,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:02,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:02,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 14:15:03,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:03,148 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:03,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:03,149 INFO L85 PathProgramCache]: Analyzing trace with hash -901682225, now seen corresponding path program 1 times [2025-02-08 14:15:03,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:03,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675564879] [2025-02-08 14:15:03,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:03,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:15:03,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:03,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:03,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:03,227 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 14:15:03,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:03,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675564879] [2025-02-08 14:15:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675564879] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:03,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70134434] [2025-02-08 14:15:03,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:03,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:03,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:03,229 INFO L229 MonitoredProcess]: Starting monitored process 11 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 14:15:03,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 14:15:03,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:15:03,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:03,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:03,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:03,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:15:03,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:03,398 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 14:15:03,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:15:03,479 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 14:15:03,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70134434] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:15:03,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:15:03,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-08 14:15:03,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190533316] [2025-02-08 14:15:03,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:15:03,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 14:15:03,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:03,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 14:15:03,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2025-02-08 14:15:03,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2025-02-08 14:15:03,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 412 transitions, 8561 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 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 14:15:03,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:03,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2025-02-08 14:15:03,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:05,109 INFO L124 PetriNetUnfolderBase]: 1328/2592 cut-off events. [2025-02-08 14:15:05,109 INFO L125 PetriNetUnfolderBase]: For 44201/44201 co-relation queries the response was YES. [2025-02-08 14:15:05,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18663 conditions, 2592 events. 1328/2592 cut-off events. For 44201/44201 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16897 event pairs, 106 based on Foata normal form. 56/2648 useless extension candidates. Maximal degree in co-relation 18062. Up to 682 conditions per place. [2025-02-08 14:15:05,125 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 329 changer transitions 18/557 dead transitions. [2025-02-08 14:15:05,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 557 transitions, 10981 flow [2025-02-08 14:15:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-02-08 14:15:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2025-02-08 14:15:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 521 transitions. [2025-02-08 14:15:05,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29602272727272727 [2025-02-08 14:15:05,127 INFO L175 Difference]: Start difference. First operand has 217 places, 412 transitions, 8561 flow. Second operand 55 states and 521 transitions. [2025-02-08 14:15:05,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 557 transitions, 10981 flow [2025-02-08 14:15:05,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 557 transitions, 10022 flow, removed 135 selfloop flow, removed 9 redundant places. [2025-02-08 14:15:05,262 INFO L231 Difference]: Finished difference. Result has 268 places, 423 transitions, 8638 flow [2025-02-08 14:15:05,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7630, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=8638, PETRI_PLACES=268, PETRI_TRANSITIONS=423} [2025-02-08 14:15:05,262 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 235 predicate places. [2025-02-08 14:15:05,262 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 423 transitions, 8638 flow [2025-02-08 14:15:05,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 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 14:15:05,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:05,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:05,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 14:15:05,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-08 14:15:05,467 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:05,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:05,468 INFO L85 PathProgramCache]: Analyzing trace with hash -121817729, now seen corresponding path program 2 times [2025-02-08 14:15:05,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:05,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132508524] [2025-02-08 14:15:05,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:15:05,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:05,470 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:15:05,472 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:05,472 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:15:05,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:05,540 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 14:15:05,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:05,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132508524] [2025-02-08 14:15:05,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132508524] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:05,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:05,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:15:05,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789612600] [2025-02-08 14:15:05,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:05,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:15:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:05,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:15:05,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:15:05,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:15:05,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 423 transitions, 8638 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 14:15:05,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:05,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:15:05,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:06,120 INFO L124 PetriNetUnfolderBase]: 1341/2664 cut-off events. [2025-02-08 14:15:06,120 INFO L125 PetriNetUnfolderBase]: For 45276/45276 co-relation queries the response was YES. [2025-02-08 14:15:06,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19699 conditions, 2664 events. 1341/2664 cut-off events. For 45276/45276 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17911 event pairs, 207 based on Foata normal form. 16/2665 useless extension candidates. Maximal degree in co-relation 19193. Up to 1395 conditions per place. [2025-02-08 14:15:06,142 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 287 changer transitions 3/509 dead transitions. [2025-02-08 14:15:06,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 509 transitions, 11031 flow [2025-02-08 14:15:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 14:15:06,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 14:15:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 225 transitions. [2025-02-08 14:15:06,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.439453125 [2025-02-08 14:15:06,143 INFO L175 Difference]: Start difference. First operand has 268 places, 423 transitions, 8638 flow. Second operand 16 states and 225 transitions. [2025-02-08 14:15:06,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 509 transitions, 11031 flow [2025-02-08 14:15:06,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 509 transitions, 10625 flow, removed 17 selfloop flow, removed 30 redundant places. [2025-02-08 14:15:06,329 INFO L231 Difference]: Finished difference. Result has 258 places, 475 transitions, 10146 flow [2025-02-08 14:15:06,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8273, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10146, PETRI_PLACES=258, PETRI_TRANSITIONS=475} [2025-02-08 14:15:06,329 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 225 predicate places. [2025-02-08 14:15:06,329 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 475 transitions, 10146 flow [2025-02-08 14:15:06,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 14:15:06,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:06,330 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:06,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-02-08 14:15:06,330 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:06,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash -976988721, now seen corresponding path program 3 times [2025-02-08 14:15:06,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:06,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175879288] [2025-02-08 14:15:06,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:15:06,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:06,332 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:15:06,334 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:06,334 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:15:06,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:06,405 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 14:15:06,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:06,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175879288] [2025-02-08 14:15:06,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175879288] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:06,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:06,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:15:06,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593177735] [2025-02-08 14:15:06,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:06,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:15:06,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:06,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:15:06,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:15:06,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:15:06,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 475 transitions, 10146 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 14:15:06,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:06,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:15:06,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:07,016 INFO L124 PetriNetUnfolderBase]: 1410/2802 cut-off events. [2025-02-08 14:15:07,016 INFO L125 PetriNetUnfolderBase]: For 51699/51699 co-relation queries the response was YES. [2025-02-08 14:15:07,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21489 conditions, 2802 events. 1410/2802 cut-off events. For 51699/51699 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19030 event pairs, 222 based on Foata normal form. 16/2803 useless extension candidates. Maximal degree in co-relation 20973. Up to 1449 conditions per place. [2025-02-08 14:15:07,034 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 304 changer transitions 3/535 dead transitions. [2025-02-08 14:15:07,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 535 transitions, 12127 flow [2025-02-08 14:15:07,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 14:15:07,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 14:15:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 197 transitions. [2025-02-08 14:15:07,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43973214285714285 [2025-02-08 14:15:07,035 INFO L175 Difference]: Start difference. First operand has 258 places, 475 transitions, 10146 flow. Second operand 14 states and 197 transitions. [2025-02-08 14:15:07,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 535 transitions, 12127 flow [2025-02-08 14:15:07,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 535 transitions, 11950 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-02-08 14:15:07,253 INFO L231 Difference]: Finished difference. Result has 272 places, 503 transitions, 11468 flow [2025-02-08 14:15:07,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9981, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11468, PETRI_PLACES=272, PETRI_TRANSITIONS=503} [2025-02-08 14:15:07,254 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 239 predicate places. [2025-02-08 14:15:07,254 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 503 transitions, 11468 flow [2025-02-08 14:15:07,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 14:15:07,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:07,254 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:07,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-02-08 14:15:07,255 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:07,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2101195311, now seen corresponding path program 4 times [2025-02-08 14:15:07,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:07,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777516722] [2025-02-08 14:15:07,255 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:15:07,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:07,257 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:15:07,259 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:07,259 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:15:07,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:07,426 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 14:15:07,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:07,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777516722] [2025-02-08 14:15:07,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777516722] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:07,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84233358] [2025-02-08 14:15:07,427 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:15:07,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:07,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:07,429 INFO L229 MonitoredProcess]: Starting monitored process 12 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 14:15:07,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 14:15:07,453 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:15:07,465 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:07,465 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:15:07,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:07,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:15:07,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:07,588 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 14:15:07,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:15:07,688 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 14:15:07,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84233358] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:15:07,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:15:07,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-08 14:15:07,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843889292] [2025-02-08 14:15:07,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:15:07,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 14:15:07,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:07,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 14:15:07,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-02-08 14:15:07,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2025-02-08 14:15:07,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 503 transitions, 11468 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 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 14:15:07,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:07,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2025-02-08 14:15:07,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:09,859 INFO L124 PetriNetUnfolderBase]: 3531/6695 cut-off events. [2025-02-08 14:15:09,859 INFO L125 PetriNetUnfolderBase]: For 131632/131632 co-relation queries the response was YES. [2025-02-08 14:15:09,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52642 conditions, 6695 events. 3531/6695 cut-off events. For 131632/131632 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 50641 event pairs, 243 based on Foata normal form. 48/6743 useless extension candidates. Maximal degree in co-relation 52179. Up to 1327 conditions per place. [2025-02-08 14:15:09,918 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 394 selfloop transitions, 907 changer transitions 13/1316 dead transitions. [2025-02-08 14:15:09,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 1316 transitions, 30790 flow [2025-02-08 14:15:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-02-08 14:15:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2025-02-08 14:15:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 525 transitions. [2025-02-08 14:15:09,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29296875 [2025-02-08 14:15:09,919 INFO L175 Difference]: Start difference. First operand has 272 places, 503 transitions, 11468 flow. Second operand 56 states and 525 transitions. [2025-02-08 14:15:09,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 1316 transitions, 30790 flow [2025-02-08 14:15:10,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1316 transitions, 30431 flow, removed 17 selfloop flow, removed 6 redundant places. [2025-02-08 14:15:10,777 INFO L231 Difference]: Finished difference. Result has 343 places, 1098 transitions, 27971 flow [2025-02-08 14:15:10,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=11245, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=27971, PETRI_PLACES=343, PETRI_TRANSITIONS=1098} [2025-02-08 14:15:10,779 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 310 predicate places. [2025-02-08 14:15:10,779 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 1098 transitions, 27971 flow [2025-02-08 14:15:10,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 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 14:15:10,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:10,779 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:10,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 14:15:10,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-08 14:15:10,984 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:10,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash -976989051, now seen corresponding path program 2 times [2025-02-08 14:15:10,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:10,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596714893] [2025-02-08 14:15:10,984 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:15:10,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:10,987 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:15:10,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:10,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:15:10,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:11,079 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 14:15:11,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596714893] [2025-02-08 14:15:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596714893] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:11,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:15:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178958818] [2025-02-08 14:15:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:11,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:15:11,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:11,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:15:11,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:15:11,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 14:15:11,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 1098 transitions, 27971 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 14:15:11,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:11,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 14:15:11,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:12,926 INFO L124 PetriNetUnfolderBase]: 3288/6453 cut-off events. [2025-02-08 14:15:12,927 INFO L125 PetriNetUnfolderBase]: For 170637/170685 co-relation queries the response was YES. [2025-02-08 14:15:13,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55943 conditions, 6453 events. 3288/6453 cut-off events. For 170637/170685 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 50483 event pairs, 580 based on Foata normal form. 26/6469 useless extension candidates. Maximal degree in co-relation 55501. Up to 3386 conditions per place. [2025-02-08 14:15:13,076 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 534 selfloop transitions, 551 changer transitions 4/1124 dead transitions. [2025-02-08 14:15:13,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 1124 transitions, 30420 flow [2025-02-08 14:15:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:15:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:15:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 185 transitions. [2025-02-08 14:15:13,077 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44471153846153844 [2025-02-08 14:15:13,077 INFO L175 Difference]: Start difference. First operand has 343 places, 1098 transitions, 27971 flow. Second operand 13 states and 185 transitions. [2025-02-08 14:15:13,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 1124 transitions, 30420 flow [2025-02-08 14:15:14,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1124 transitions, 29739 flow, removed 277 selfloop flow, removed 4 redundant places. [2025-02-08 14:15:14,456 INFO L231 Difference]: Finished difference. Result has 354 places, 1103 transitions, 28971 flow [2025-02-08 14:15:14,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=27290, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1098, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=543, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=28971, PETRI_PLACES=354, PETRI_TRANSITIONS=1103} [2025-02-08 14:15:14,457 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 321 predicate places. [2025-02-08 14:15:14,457 INFO L471 AbstractCegarLoop]: Abstraction has has 354 places, 1103 transitions, 28971 flow [2025-02-08 14:15:14,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 14:15:14,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:14,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:14,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-02-08 14:15:14,457 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:14,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1732289845, now seen corresponding path program 3 times [2025-02-08 14:15:14,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:14,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581212832] [2025-02-08 14:15:14,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:15:14,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:14,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:15:14,466 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:14,467 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 14:15:14,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:14,562 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 14:15:14,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581212832] [2025-02-08 14:15:14,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581212832] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585494786] [2025-02-08 14:15:14,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:15:14,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:14,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:14,565 INFO L229 MonitoredProcess]: Starting monitored process 13 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 14:15:14,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 14:15:14,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:15:14,594 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:14,595 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 14:15:14,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:14,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:15:14,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:14,788 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 14:15:14,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:15:14,932 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 14:15:14,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585494786] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:15:14,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:15:14,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-08 14:15:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104812336] [2025-02-08 14:15:14,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:15:14,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 14:15:14,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:14,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 14:15:14,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2025-02-08 14:15:15,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2025-02-08 14:15:15,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 1103 transitions, 28971 flow. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 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 14:15:15,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:15,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2025-02-08 14:15:15,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:18,046 INFO L124 PetriNetUnfolderBase]: 4737/9444 cut-off events. [2025-02-08 14:15:18,046 INFO L125 PetriNetUnfolderBase]: For 258101/258202 co-relation queries the response was YES. [2025-02-08 14:15:18,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82527 conditions, 9444 events. 4737/9444 cut-off events. For 258101/258202 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 78511 event pairs, 421 based on Foata normal form. 171/9609 useless extension candidates. Maximal degree in co-relation 81958. Up to 2154 conditions per place. [2025-02-08 14:15:18,156 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 404 selfloop transitions, 1226 changer transitions 16/1681 dead transitions. [2025-02-08 14:15:18,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1681 transitions, 46046 flow [2025-02-08 14:15:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-08 14:15:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-08 14:15:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 363 transitions. [2025-02-08 14:15:18,157 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3336397058823529 [2025-02-08 14:15:18,157 INFO L175 Difference]: Start difference. First operand has 354 places, 1103 transitions, 28971 flow. Second operand 34 states and 363 transitions. [2025-02-08 14:15:18,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1681 transitions, 46046 flow [2025-02-08 14:15:20,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1681 transitions, 44710 flow, removed 16 selfloop flow, removed 9 redundant places. [2025-02-08 14:15:20,676 INFO L231 Difference]: Finished difference. Result has 390 places, 1553 transitions, 43618 flow [2025-02-08 14:15:20,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=27989, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=796, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=43618, PETRI_PLACES=390, PETRI_TRANSITIONS=1553} [2025-02-08 14:15:20,678 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 357 predicate places. [2025-02-08 14:15:20,678 INFO L471 AbstractCegarLoop]: Abstraction has has 390 places, 1553 transitions, 43618 flow [2025-02-08 14:15:20,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 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 14:15:20,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:20,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:20,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 14:15:20,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:20,882 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:20,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:20,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1906348939, now seen corresponding path program 4 times [2025-02-08 14:15:20,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:20,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338268400] [2025-02-08 14:15:20,882 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:15:20,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:20,884 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:15:20,886 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:20,886 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:15:20,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:20,958 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 14:15:20,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338268400] [2025-02-08 14:15:20,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338268400] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927416380] [2025-02-08 14:15:20,959 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:15:20,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:20,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:20,961 INFO L229 MonitoredProcess]: Starting monitored process 14 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 14:15:20,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 14:15:20,983 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:15:20,991 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:20,991 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:15:20,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:20,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:15:20,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:21,085 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 14:15:21,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:15:21,170 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 14:15:21,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927416380] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:15:21,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:15:21,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-08 14:15:21,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738342787] [2025-02-08 14:15:21,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:15:21,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 14:15:21,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:21,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 14:15:21,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-02-08 14:15:21,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2025-02-08 14:15:21,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 1553 transitions, 43618 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 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 14:15:21,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:21,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2025-02-08 14:15:21,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:28,070 INFO L124 PetriNetUnfolderBase]: 8771/17089 cut-off events. [2025-02-08 14:15:28,071 INFO L125 PetriNetUnfolderBase]: For 468433/468437 co-relation queries the response was YES. [2025-02-08 14:15:28,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149475 conditions, 17089 events. 8771/17089 cut-off events. For 468433/468437 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 151246 event pairs, 671 based on Foata normal form. 184/17273 useless extension candidates. Maximal degree in co-relation 148976. Up to 3349 conditions per place. [2025-02-08 14:15:28,328 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 701 selfloop transitions, 2004 changer transitions 48/2755 dead transitions. [2025-02-08 14:15:28,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 2755 transitions, 79419 flow [2025-02-08 14:15:28,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-02-08 14:15:28,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2025-02-08 14:15:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 654 transitions. [2025-02-08 14:15:28,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29196428571428573 [2025-02-08 14:15:28,330 INFO L175 Difference]: Start difference. First operand has 390 places, 1553 transitions, 43618 flow. Second operand 70 states and 654 transitions. [2025-02-08 14:15:28,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 2755 transitions, 79419 flow [2025-02-08 14:15:36,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 2755 transitions, 77834 flow, removed 113 selfloop flow, removed 8 redundant places. [2025-02-08 14:15:36,724 INFO L231 Difference]: Finished difference. Result has 473 places, 2432 transitions, 73318 flow [2025-02-08 14:15:36,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=42523, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=73318, PETRI_PLACES=473, PETRI_TRANSITIONS=2432} [2025-02-08 14:15:36,726 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 440 predicate places. [2025-02-08 14:15:36,727 INFO L471 AbstractCegarLoop]: Abstraction has has 473 places, 2432 transitions, 73318 flow [2025-02-08 14:15:36,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 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 14:15:36,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:36,727 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:36,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 14:15:36,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:36,928 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:36,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash 9635459, now seen corresponding path program 5 times [2025-02-08 14:15:36,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:36,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456420802] [2025-02-08 14:15:36,928 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 14:15:36,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:36,932 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:15:36,934 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:36,934 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:15:36,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:37,010 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 14:15:37,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:37,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456420802] [2025-02-08 14:15:37,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456420802] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:37,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136275623] [2025-02-08 14:15:37,011 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 14:15:37,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:37,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:37,016 INFO L229 MonitoredProcess]: Starting monitored process 15 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 14:15:37,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 14:15:37,042 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:15:37,050 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:37,050 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:15:37,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:37,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 14:15:37,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:15:37,126 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:15:37,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136275623] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:37,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:15:37,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2025-02-08 14:15:37,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45608562] [2025-02-08 14:15:37,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:37,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 14:15:37,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:37,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 14:15:37,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2025-02-08 14:15:37,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2025-02-08 14:15:37,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 2432 transitions, 73318 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 14:15:37,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:37,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2025-02-08 14:15:37,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:44,685 INFO L124 PetriNetUnfolderBase]: 7413/15622 cut-off events. [2025-02-08 14:15:44,685 INFO L125 PetriNetUnfolderBase]: For 576732/576780 co-relation queries the response was YES. [2025-02-08 14:15:44,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155208 conditions, 15622 events. 7413/15622 cut-off events. For 576732/576780 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 148363 event pairs, 892 based on Foata normal form. 186/15672 useless extension candidates. Maximal degree in co-relation 154607. Up to 5031 conditions per place. [2025-02-08 14:15:44,968 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 423 selfloop transitions, 2059 changer transitions 42/2609 dead transitions. [2025-02-08 14:15:44,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 2609 transitions, 83444 flow [2025-02-08 14:15:44,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 14:15:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 14:15:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2025-02-08 14:15:44,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2025-02-08 14:15:44,969 INFO L175 Difference]: Start difference. First operand has 473 places, 2432 transitions, 73318 flow. Second operand 11 states and 135 transitions. [2025-02-08 14:15:44,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 2609 transitions, 83444 flow [2025-02-08 14:15:55,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 2609 transitions, 82267 flow, removed 288 selfloop flow, removed 13 redundant places. [2025-02-08 14:15:55,867 INFO L231 Difference]: Finished difference. Result has 470 places, 2525 transitions, 79801 flow [2025-02-08 14:15:55,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=72167, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1927, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=79801, PETRI_PLACES=470, PETRI_TRANSITIONS=2525} [2025-02-08 14:15:55,870 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 437 predicate places. [2025-02-08 14:15:55,870 INFO L471 AbstractCegarLoop]: Abstraction has has 470 places, 2525 transitions, 79801 flow [2025-02-08 14:15:55,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 14:15:55,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:55,870 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:55,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 14:15:56,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-02-08 14:15:56,071 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:15:56,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:56,071 INFO L85 PathProgramCache]: Analyzing trace with hash 791682551, now seen corresponding path program 6 times [2025-02-08 14:15:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:56,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803153188] [2025-02-08 14:15:56,072 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 14:15:56,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:56,074 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:15:56,075 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:15:56,075 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 14:15:56,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:56,136 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 14:15:56,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:56,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803153188] [2025-02-08 14:15:56,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803153188] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:56,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:56,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:15:56,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385474317] [2025-02-08 14:15:56,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:56,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:15:56,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:56,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:15:56,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:15:56,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-08 14:15:56,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 2525 transitions, 79801 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 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 14:15:56,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:56,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-08 14:15:56,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:04,594 INFO L124 PetriNetUnfolderBase]: 7957/16242 cut-off events. [2025-02-08 14:16:04,595 INFO L125 PetriNetUnfolderBase]: For 578828/578828 co-relation queries the response was YES. [2025-02-08 14:16:04,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158877 conditions, 16242 events. 7957/16242 cut-off events. For 578828/578828 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 149515 event pairs, 1195 based on Foata normal form. 4/16216 useless extension candidates. Maximal degree in co-relation 158361. Up to 9041 conditions per place. [2025-02-08 14:16:04,807 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 1304 selfloop transitions, 1220 changer transitions 3/2560 dead transitions. [2025-02-08 14:16:04,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 2560 transitions, 85297 flow [2025-02-08 14:16:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 14:16:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 14:16:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 217 transitions. [2025-02-08 14:16:04,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39889705882352944 [2025-02-08 14:16:04,808 INFO L175 Difference]: Start difference. First operand has 470 places, 2525 transitions, 79801 flow. Second operand 17 states and 217 transitions. [2025-02-08 14:16:04,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 2560 transitions, 85297 flow [2025-02-08 14:16:14,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 2560 transitions, 83811 flow, removed 45 selfloop flow, removed 7 redundant places. [2025-02-08 14:16:14,870 INFO L231 Difference]: Finished difference. Result has 482 places, 2529 transitions, 80975 flow [2025-02-08 14:16:14,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78324, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=80975, PETRI_PLACES=482, PETRI_TRANSITIONS=2529} [2025-02-08 14:16:14,872 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 449 predicate places. [2025-02-08 14:16:14,873 INFO L471 AbstractCegarLoop]: Abstraction has has 482 places, 2529 transitions, 80975 flow [2025-02-08 14:16:14,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 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 14:16:14,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:14,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:14,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-02-08 14:16:14,873 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:16:14,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1413509359, now seen corresponding path program 5 times [2025-02-08 14:16:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:14,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973206336] [2025-02-08 14:16:14,874 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 14:16:14,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:14,877 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:14,878 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:14,878 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:16:14,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:14,947 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 14:16:14,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:14,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973206336] [2025-02-08 14:16:14,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973206336] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:14,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:14,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:16:14,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623523683] [2025-02-08 14:16:14,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:14,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:16:14,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:14,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:16:14,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:16:14,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-08 14:16:14,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 2529 transitions, 80975 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 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 14:16:14,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:14,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-08 14:16:14,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand