./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-1.i --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/pthread-theta/unwind3-1.i -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 ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:16:05,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:16:05,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:16:05,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:16:05,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:16:05,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:16:05,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:16:05,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:16:05,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:16:05,829 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:16:05,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:16:05,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:16:05,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:16:05,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:16:05,830 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:16:05,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:16:05,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:16:05,832 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:16:05,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:16:05,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:16:05,833 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 -> ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe [2025-02-08 14:16:06,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:16:06,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:16:06,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:16:06,038 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:16:06,038 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:16:06,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-1.i [2025-02-08 14:16:07,125 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/313251ea1/a7dcf8c2ff8c48b9ac0566155d5fb419/FLAG0024d9bdf [2025-02-08 14:16:07,383 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:16:07,385 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-1.i [2025-02-08 14:16:07,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/313251ea1/a7dcf8c2ff8c48b9ac0566155d5fb419/FLAG0024d9bdf [2025-02-08 14:16:07,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/313251ea1/a7dcf8c2ff8c48b9ac0566155d5fb419 [2025-02-08 14:16:07,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:16:07,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:16:07,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:16:07,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:16:07,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:16:07,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:16:07" (1/1) ... [2025-02-08 14:16:07,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e3bffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:07, skipping insertion in model container [2025-02-08 14:16:07,715 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:16:07" (1/1) ... [2025-02-08 14:16:07,738 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:16:07,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:16:07,996 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:16:08,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:16:08,048 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:16:08,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08 WrapperNode [2025-02-08 14:16:08,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:16:08,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:16:08,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:16:08,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:16:08,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,074 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2025-02-08 14:16:08,074 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:16:08,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:16:08,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:16:08,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:16:08,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,088 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 14:16:08,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,091 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:16:08,094 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:16:08,094 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:16:08,094 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:16:08,094 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (1/1) ... [2025-02-08 14:16:08,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:16:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:08,114 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 14:16:08,116 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 14:16:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:16:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-08 14:16:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-08 14:16:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-08 14:16:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-08 14:16:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:16:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:16:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:16:08,131 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 14:16:08,214 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:16:08,215 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:16:08,309 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:16:08,310 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:16:08,373 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:16:08,373 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:16:08,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:16:08 BoogieIcfgContainer [2025-02-08 14:16:08,374 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:16:08,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:16:08,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:16:08,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:16:08,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:16:07" (1/3) ... [2025-02-08 14:16:08,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5869215e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:16:08, skipping insertion in model container [2025-02-08 14:16:08,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:08" (2/3) ... [2025-02-08 14:16:08,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5869215e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:16:08, skipping insertion in model container [2025-02-08 14:16:08,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:16:08" (3/3) ... [2025-02-08 14:16:08,382 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-1.i [2025-02-08 14:16:08,393 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:16:08,394 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-1.i that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-08 14:16:08,394 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:16:08,438 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:16:08,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2025-02-08 14:16:08,480 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2025-02-08 14:16:08,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:16:08,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 132 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2025-02-08 14:16:08,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2025-02-08 14:16:08,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2025-02-08 14:16:08,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:16:08,506 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;@1b283dd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:16:08,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-02-08 14:16:08,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:16:08,511 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-02-08 14:16:08,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:16:08,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:08,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:08,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:08,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 998230392, now seen corresponding path program 1 times [2025-02-08 14:16:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:08,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115384943] [2025-02-08 14:16:08,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:08,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:16:08,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:16:08,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:08,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:08,743 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 14:16:08,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:08,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115384943] [2025-02-08 14:16:08,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115384943] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:08,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:08,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:08,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098580509] [2025-02-08 14:16:08,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:08,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:16:08,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:08,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:16:08,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:16:08,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-02-08 14:16:08,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 14:16:08,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:08,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-02-08 14:16:08,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:08,925 INFO L124 PetriNetUnfolderBase]: 92/230 cut-off events. [2025-02-08 14:16:08,925 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:16:08,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 230 events. 92/230 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1018 event pairs, 11 based on Foata normal form. 25/229 useless extension candidates. Maximal degree in co-relation 369. Up to 140 conditions per place. [2025-02-08 14:16:08,927 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 26 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2025-02-08 14:16:08,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 150 flow [2025-02-08 14:16:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:16:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:16:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2025-02-08 14:16:08,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2025-02-08 14:16:08,936 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 5 states and 97 transitions. [2025-02-08 14:16:08,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 150 flow [2025-02-08 14:16:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:08,940 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 72 flow [2025-02-08 14:16:08,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2025-02-08 14:16:08,944 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2025-02-08 14:16:08,944 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 72 flow [2025-02-08 14:16:08,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 14:16:08,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:08,944 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:08,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:16:08,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:08,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash 998230335, now seen corresponding path program 1 times [2025-02-08 14:16:08,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:08,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710409180] [2025-02-08 14:16:08,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:08,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:08,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:16:08,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:16:08,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:08,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:09,008 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 14:16:09,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:09,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710409180] [2025-02-08 14:16:09,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710409180] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:09,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:09,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:16:09,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362523182] [2025-02-08 14:16:09,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:09,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:16:09,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:09,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:16:09,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:16:09,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2025-02-08 14:16:09,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 14:16:09,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:09,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2025-02-08 14:16:09,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:09,127 INFO L124 PetriNetUnfolderBase]: 61/182 cut-off events. [2025-02-08 14:16:09,127 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-02-08 14:16:09,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 182 events. 61/182 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 815 event pairs, 18 based on Foata normal form. 4/163 useless extension candidates. Maximal degree in co-relation 278. Up to 114 conditions per place. [2025-02-08 14:16:09,129 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 19 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2025-02-08 14:16:09,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 124 flow [2025-02-08 14:16:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:16:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:16:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2025-02-08 14:16:09,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:16:09,130 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 72 flow. Second operand 3 states and 66 transitions. [2025-02-08 14:16:09,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 124 flow [2025-02-08 14:16:09,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:16:09,132 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 76 flow [2025-02-08 14:16:09,132 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2025-02-08 14:16:09,133 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2025-02-08 14:16:09,133 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 76 flow [2025-02-08 14:16:09,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 14:16:09,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:09,133 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:09,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:16:09,133 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:09,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash 880371243, now seen corresponding path program 1 times [2025-02-08 14:16:09,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:09,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541090363] [2025-02-08 14:16:09,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:09,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:09,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:09,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:09,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:09,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:09,215 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 14:16:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541090363] [2025-02-08 14:16:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541090363] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:09,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:09,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2677653] [2025-02-08 14:16:09,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:09,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:16:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:09,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:16:09,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:16:09,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-02-08 14:16:09,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 14:16:09,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:09,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-02-08 14:16:09,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:09,339 INFO L124 PetriNetUnfolderBase]: 61/170 cut-off events. [2025-02-08 14:16:09,339 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-08 14:16:09,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 170 events. 61/170 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 686 event pairs, 6 based on Foata normal form. 13/176 useless extension candidates. Maximal degree in co-relation 282. Up to 60 conditions per place. [2025-02-08 14:16:09,340 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 31 selfloop transitions, 3 changer transitions 3/47 dead transitions. [2025-02-08 14:16:09,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 200 flow [2025-02-08 14:16:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:16:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:16:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2025-02-08 14:16:09,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2025-02-08 14:16:09,341 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 76 flow. Second operand 5 states and 105 transitions. [2025-02-08 14:16:09,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 200 flow [2025-02-08 14:16:09,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:09,343 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 73 flow [2025-02-08 14:16:09,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2025-02-08 14:16:09,343 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2025-02-08 14:16:09,344 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 73 flow [2025-02-08 14:16:09,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 14:16:09,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:09,344 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:09,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:16:09,344 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:09,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash 881242166, now seen corresponding path program 1 times [2025-02-08 14:16:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:09,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379808326] [2025-02-08 14:16:09,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:09,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:09,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:09,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:09,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:09,390 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 14:16:09,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:09,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379808326] [2025-02-08 14:16:09,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379808326] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:09,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:09,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:09,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642111973] [2025-02-08 14:16:09,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:09,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:09,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:09,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:09,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:09,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2025-02-08 14:16:09,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:09,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:09,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2025-02-08 14:16:09,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:09,452 INFO L124 PetriNetUnfolderBase]: 46/135 cut-off events. [2025-02-08 14:16:09,452 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2025-02-08 14:16:09,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 135 events. 46/135 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 503 event pairs, 11 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 264. Up to 81 conditions per place. [2025-02-08 14:16:09,454 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 17 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2025-02-08 14:16:09,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 122 flow [2025-02-08 14:16:09,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:09,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-02-08 14:16:09,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2025-02-08 14:16:09,455 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 73 flow. Second operand 4 states and 69 transitions. [2025-02-08 14:16:09,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 122 flow [2025-02-08 14:16:09,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:09,456 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 68 flow [2025-02-08 14:16:09,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2025-02-08 14:16:09,457 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2025-02-08 14:16:09,457 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 68 flow [2025-02-08 14:16:09,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:09,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:09,457 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:09,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:16:09,457 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:09,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash -73515993, now seen corresponding path program 1 times [2025-02-08 14:16:09,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:09,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715918161] [2025-02-08 14:16:09,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:09,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:09,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:16:09,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:16:09,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:09,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:09,528 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 14:16:09,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:09,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715918161] [2025-02-08 14:16:09,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715918161] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:09,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:09,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:16:09,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753639628] [2025-02-08 14:16:09,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:09,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:16:09,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:09,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:16:09,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:16:09,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2025-02-08 14:16:09,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 14:16:09,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:09,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2025-02-08 14:16:09,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:09,611 INFO L124 PetriNetUnfolderBase]: 43/124 cut-off events. [2025-02-08 14:16:09,611 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-02-08 14:16:09,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 124 events. 43/124 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 437 event pairs, 11 based on Foata normal form. 4/119 useless extension candidates. Maximal degree in co-relation 241. Up to 67 conditions per place. [2025-02-08 14:16:09,612 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 18 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2025-02-08 14:16:09,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 125 flow [2025-02-08 14:16:09,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:16:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:16:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2025-02-08 14:16:09,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503030303030303 [2025-02-08 14:16:09,613 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 68 flow. Second operand 5 states and 83 transitions. [2025-02-08 14:16:09,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 125 flow [2025-02-08 14:16:09,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:09,614 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 70 flow [2025-02-08 14:16:09,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2025-02-08 14:16:09,615 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2025-02-08 14:16:09,615 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 70 flow [2025-02-08 14:16:09,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 14:16:09,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:09,615 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:09,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:16:09,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:09,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:09,616 INFO L85 PathProgramCache]: Analyzing trace with hash 319462916, now seen corresponding path program 1 times [2025-02-08 14:16:09,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:09,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641607468] [2025-02-08 14:16:09,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:09,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:09,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:16:09,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:16:09,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:09,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:16:09,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:09,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641607468] [2025-02-08 14:16:09,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641607468] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:09,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:09,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:09,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054341059] [2025-02-08 14:16:09,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:09,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:09,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:09,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:09,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:09,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-02-08 14:16:09,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 14:16:09,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:09,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-02-08 14:16:09,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:09,736 INFO L124 PetriNetUnfolderBase]: 83/204 cut-off events. [2025-02-08 14:16:09,736 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-02-08 14:16:09,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 204 events. 83/204 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 812 event pairs, 55 based on Foata normal form. 8/203 useless extension candidates. Maximal degree in co-relation 417. Up to 123 conditions per place. [2025-02-08 14:16:09,737 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 24 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2025-02-08 14:16:09,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 148 flow [2025-02-08 14:16:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-02-08 14:16:09,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2025-02-08 14:16:09,738 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 70 flow. Second operand 4 states and 89 transitions. [2025-02-08 14:16:09,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 148 flow [2025-02-08 14:16:09,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 138 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:09,739 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 82 flow [2025-02-08 14:16:09,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2025-02-08 14:16:09,740 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2025-02-08 14:16:09,740 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 82 flow [2025-02-08 14:16:09,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 14:16:09,740 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:09,740 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:09,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:16:09,740 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:09,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:09,741 INFO L85 PathProgramCache]: Analyzing trace with hash -527621872, now seen corresponding path program 1 times [2025-02-08 14:16:09,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:09,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567593131] [2025-02-08 14:16:09,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:09,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:09,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:09,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:09,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:09,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:16:09,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:09,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567593131] [2025-02-08 14:16:09,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567593131] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:09,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973921520] [2025-02-08 14:16:09,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:09,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:09,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:09,806 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 14:16:09,807 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 14:16:09,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:09,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:09,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:09,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:09,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 14:16:09,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:09,943 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:16:09,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973921520] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:09,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:16:09,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2025-02-08 14:16:09,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622174777] [2025-02-08 14:16:09,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:09,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:16:09,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:09,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:16:09,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-02-08 14:16:09,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-02-08 14:16:09,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 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 14:16:09,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:09,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-02-08 14:16:09,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:10,112 INFO L124 PetriNetUnfolderBase]: 69/201 cut-off events. [2025-02-08 14:16:10,113 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2025-02-08 14:16:10,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 201 events. 69/201 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 811 event pairs, 17 based on Foata normal form. 8/204 useless extension candidates. Maximal degree in co-relation 448. Up to 74 conditions per place. [2025-02-08 14:16:10,114 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 22 selfloop transitions, 2 changer transitions 20/51 dead transitions. [2025-02-08 14:16:10,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 249 flow [2025-02-08 14:16:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:16:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:16:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2025-02-08 14:16:10,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2025-02-08 14:16:10,116 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 82 flow. Second operand 10 states and 174 transitions. [2025-02-08 14:16:10,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 249 flow [2025-02-08 14:16:10,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:10,119 INFO L231 Difference]: Finished difference. Result has 51 places, 26 transitions, 100 flow [2025-02-08 14:16:10,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=100, PETRI_PLACES=51, PETRI_TRANSITIONS=26} [2025-02-08 14:16:10,120 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2025-02-08 14:16:10,121 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 26 transitions, 100 flow [2025-02-08 14:16:10,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 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 14:16:10,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:10,122 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:10,129 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 14:16:10,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:10,322 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:10,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash 88655833, now seen corresponding path program 1 times [2025-02-08 14:16:10,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:10,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99219512] [2025-02-08 14:16:10,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:10,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:10,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:16:10,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:16:10,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:10,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:16:10,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99219512] [2025-02-08 14:16:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99219512] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017401336] [2025-02-08 14:16:10,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:10,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:10,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:10,388 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 14:16:10,390 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 14:16:10,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:16:10,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:16:10,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:10,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:10,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:16:10,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:16:10,469 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:16:10,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017401336] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:10,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:16:10,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:16:10,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940574282] [2025-02-08 14:16:10,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:10,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:16:10,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:10,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:16:10,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:16:10,481 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-02-08 14:16:10,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 26 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 14:16:10,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:10,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-02-08 14:16:10,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:10,537 INFO L124 PetriNetUnfolderBase]: 39/116 cut-off events. [2025-02-08 14:16:10,537 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2025-02-08 14:16:10,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 116 events. 39/116 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 326 event pairs, 15 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 289. Up to 43 conditions per place. [2025-02-08 14:16:10,538 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 21 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2025-02-08 14:16:10,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 33 transitions, 164 flow [2025-02-08 14:16:10,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2025-02-08 14:16:10,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-02-08 14:16:10,539 INFO L175 Difference]: Start difference. First operand has 51 places, 26 transitions, 100 flow. Second operand 6 states and 117 transitions. [2025-02-08 14:16:10,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 33 transitions, 164 flow [2025-02-08 14:16:10,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 149 flow, removed 6 selfloop flow, removed 8 redundant places. [2025-02-08 14:16:10,542 INFO L231 Difference]: Finished difference. Result has 41 places, 25 transitions, 91 flow [2025-02-08 14:16:10,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=41, PETRI_TRANSITIONS=25} [2025-02-08 14:16:10,544 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2025-02-08 14:16:10,544 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 91 flow [2025-02-08 14:16:10,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 14:16:10,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:10,544 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:10,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:16:10,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:10,745 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:10,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:10,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1059660350, now seen corresponding path program 1 times [2025-02-08 14:16:10,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:10,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151833272] [2025-02-08 14:16:10,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:10,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:10,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:16:10,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:16:10,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:10,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:16:10,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:10,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151833272] [2025-02-08 14:16:10,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151833272] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:10,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317276209] [2025-02-08 14:16:10,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:10,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:10,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:10,793 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 14:16:10,794 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 14:16:10,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:16:10,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:16:10,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:10,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:10,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:16:10,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:16:10,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:16:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:16:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317276209] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:16:10,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:16:10,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:16:10,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381491651] [2025-02-08 14:16:10,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:16:10,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:16:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:10,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:16:10,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:16:10,911 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-02-08 14:16:10,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 91 flow. Second operand has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 12 states have internal predecessors, (203), 0 states have call successors, (0), 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 14:16:10,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:10,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-02-08 14:16:10,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:11,007 INFO L124 PetriNetUnfolderBase]: 63/200 cut-off events. [2025-02-08 14:16:11,008 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2025-02-08 14:16:11,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 200 events. 63/200 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 616 event pairs, 27 based on Foata normal form. 12/211 useless extension candidates. Maximal degree in co-relation 465. Up to 71 conditions per place. [2025-02-08 14:16:11,009 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 31 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2025-02-08 14:16:11,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 239 flow [2025-02-08 14:16:11,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:16:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:16:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2025-02-08 14:16:11,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5848484848484848 [2025-02-08 14:16:11,010 INFO L175 Difference]: Start difference. First operand has 41 places, 25 transitions, 91 flow. Second operand 10 states and 193 transitions. [2025-02-08 14:16:11,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 239 flow [2025-02-08 14:16:11,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 224 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:11,012 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 146 flow [2025-02-08 14:16:11,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2025-02-08 14:16:11,012 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2025-02-08 14:16:11,012 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 146 flow [2025-02-08 14:16:11,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 12 states have internal predecessors, (203), 0 states have call successors, (0), 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 14:16:11,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:11,012 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:11,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:16:11,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:11,213 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:11,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1465871000, now seen corresponding path program 2 times [2025-02-08 14:16:11,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:11,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448130751] [2025-02-08 14:16:11,214 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:16:11,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:11,221 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 14:16:11,226 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 30 statements. [2025-02-08 14:16:11,227 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:16:11,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-08 14:16:11,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:11,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448130751] [2025-02-08 14:16:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448130751] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:11,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293630397] [2025-02-08 14:16:11,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:16:11,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:11,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:11,320 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 14:16:11,321 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 14:16:11,367 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 14:16:11,374 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 30 statements. [2025-02-08 14:16:11,374 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:16:11,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:11,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:16:11,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-08 14:16:11,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:16:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-08 14:16:11,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293630397] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:16:11,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:16:11,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2025-02-08 14:16:11,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531525124] [2025-02-08 14:16:11,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:16:11,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 14:16:11,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:11,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 14:16:11,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-02-08 14:16:11,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2025-02-08 14:16:11,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 146 flow. Second operand has 14 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 0 states have call successors, (0), 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 14:16:11,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:11,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2025-02-08 14:16:11,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:11,885 INFO L124 PetriNetUnfolderBase]: 113/365 cut-off events. [2025-02-08 14:16:11,885 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2025-02-08 14:16:11,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 365 events. 113/365 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1623 event pairs, 1 based on Foata normal form. 8/373 useless extension candidates. Maximal degree in co-relation 898. Up to 50 conditions per place. [2025-02-08 14:16:11,886 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2025-02-08 14:16:11,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 76 transitions, 462 flow [2025-02-08 14:16:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 14:16:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-08 14:16:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 217 transitions. [2025-02-08 14:16:11,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3287878787878788 [2025-02-08 14:16:11,888 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 146 flow. Second operand 20 states and 217 transitions. [2025-02-08 14:16:11,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 76 transitions, 462 flow [2025-02-08 14:16:11,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 422 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-08 14:16:11,890 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2025-02-08 14:16:11,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2025-02-08 14:16:11,891 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2025-02-08 14:16:11,891 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2025-02-08 14:16:11,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 0 states have call successors, (0), 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 14:16:11,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2025-02-08 14:16:11,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2025-02-08 14:16:11,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 16 remaining) [2025-02-08 14:16:11,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2025-02-08 14:16:11,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2025-02-08 14:16:11,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2025-02-08 14:16:11,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2025-02-08 14:16:11,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2025-02-08 14:16:11,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2025-02-08 14:16:11,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2025-02-08 14:16:11,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2025-02-08 14:16:11,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2025-02-08 14:16:11,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2025-02-08 14:16:11,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2025-02-08 14:16:11,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2025-02-08 14:16:11,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2025-02-08 14:16:11,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:16:12,100 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,SelfDestructingSolverStorable9 [2025-02-08 14:16:12,101 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:12,104 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:16:12,104 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:16:12,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:16:12 BasicIcfg [2025-02-08 14:16:12,108 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:16:12,108 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:16:12,108 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:16:12,108 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:16:12,109 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:16:08" (3/4) ... [2025-02-08 14:16:12,110 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:16:12,111 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f1 [2025-02-08 14:16:12,112 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f2 [2025-02-08 14:16:12,113 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2025-02-08 14:16:12,113 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-02-08 14:16:12,113 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 14:16:12,113 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-08 14:16:12,167 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:16:12,168 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:16:12,168 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:16:12,168 INFO L158 Benchmark]: Toolchain (without parser) took 4457.95ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 53.3MB in the end (delta: 60.7MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2025-02-08 14:16:12,168 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:16:12,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.95ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 94.4MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 14:16:12,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.79ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 91.8MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:16:12,170 INFO L158 Benchmark]: Boogie Preprocessor took 18.60ms. Allocated memory is still 142.6MB. Free memory was 91.8MB in the beginning and 90.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:16:12,170 INFO L158 Benchmark]: IcfgBuilder took 279.74ms. Allocated memory is still 142.6MB. Free memory was 90.6MB in the beginning and 69.2MB in the end (delta: 21.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 14:16:12,170 INFO L158 Benchmark]: TraceAbstraction took 3731.42ms. Allocated memory is still 142.6MB. Free memory was 67.9MB in the beginning and 59.0MB in the end (delta: 8.9MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2025-02-08 14:16:12,170 INFO L158 Benchmark]: Witness Printer took 59.67ms. Allocated memory is still 142.6MB. Free memory was 59.0MB in the beginning and 53.3MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:16:12,171 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.95ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 94.4MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.79ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 91.8MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.60ms. Allocated memory is still 142.6MB. Free memory was 91.8MB in the beginning and 90.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 279.74ms. Allocated memory is still 142.6MB. Free memory was 90.6MB in the beginning and 69.2MB in the end (delta: 21.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3731.42ms. Allocated memory is still 142.6MB. Free memory was 67.9MB in the beginning and 59.0MB in the end (delta: 8.9MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Witness Printer took 59.67ms. Allocated memory is still 142.6MB. Free memory was 59.0MB in the beginning and 53.3MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 590 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 509 mSDsluCounter, 435 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 405 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1203 IncrementalHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 30 mSDtfsCounter, 1203 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=9, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 227 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 640 SizeOfPredicates, 14 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 81/118 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 14:16:12,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE