./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:21:58,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:21:58,426 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:21:58,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:21:58,433 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:21:58,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:21:58,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:21:58,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:21:58,451 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:21:58,451 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:21:58,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:21:58,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:21:58,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:21:58,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:21:58,453 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:21:58,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:21:58,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:21:58,453 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:21:58,453 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:21:58,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:21:58,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:21:58,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:21:58,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:21:58,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:21:58,454 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:21:58,454 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:21:58,454 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:21:58,454 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:21:58,454 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:21:58,454 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:21:58,454 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:21:58,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:21:58,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:21:58,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:21:58,456 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:21:58,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:21:58,456 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2025-03-09 06:21:58,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:21:58,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:21:58,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:21:58,684 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:21:58,684 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:21:58,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2025-03-09 06:21:59,813 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2231470d/c9f6d533c9f74a25b5def9c36a1b0734/FLAG843a077f5 [2025-03-09 06:22:00,063 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:22:00,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2025-03-09 06:22:00,073 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2231470d/c9f6d533c9f74a25b5def9c36a1b0734/FLAG843a077f5 [2025-03-09 06:22:00,084 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2231470d/c9f6d533c9f74a25b5def9c36a1b0734 [2025-03-09 06:22:00,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:22:00,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:22:00,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:22:00,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:22:00,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:22:00,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5766f10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00, skipping insertion in model container [2025-03-09 06:22:00,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,113 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:22:00,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:22:00,363 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:22:00,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:22:00,447 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:22:00,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00 WrapperNode [2025-03-09 06:22:00,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:22:00,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:22:00,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:22:00,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:22:00,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,490 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-09 06:22:00,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:22:00,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:22:00,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:22:00,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:22:00,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,513 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 06:22:00,515 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,519 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:22:00,529 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:22:00,529 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:22:00,529 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:22:00,530 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (1/1) ... [2025-03-09 06:22:00,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:22:00,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:00,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:22:00,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:22:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 06:22:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 06:22:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 06:22:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 06:22:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:22:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:22:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:22:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:22:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:22:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:22:00,578 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:22:00,665 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:22:00,666 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:22:00,804 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:22:00,804 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:22:00,896 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:22:00,897 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:22:00,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:22:00 BoogieIcfgContainer [2025-03-09 06:22:00,898 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:22:00,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:22:00,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:22:00,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:22:00,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:22:00" (1/3) ... [2025-03-09 06:22:00,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6f9907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:22:00, skipping insertion in model container [2025-03-09 06:22:00,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:00" (2/3) ... [2025-03-09 06:22:00,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6f9907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:22:00, skipping insertion in model container [2025-03-09 06:22:00,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:22:00" (3/3) ... [2025-03-09 06:22:00,906 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2025-03-09 06:22:00,918 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:22:00,920 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-1.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-09 06:22:00,920 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:22:00,957 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:22:00,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2025-03-09 06:22:01,012 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-03-09 06:22:01,014 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:22:01,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-03-09 06:22:01,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2025-03-09 06:22:01,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2025-03-09 06:22:01,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:22:01,038 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;@48a99d96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:22:01,038 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-09 06:22:01,042 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:22:01,042 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-09 06:22:01,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:22:01,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:01,043 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:22:01,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:01,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:01,051 INFO L85 PathProgramCache]: Analyzing trace with hash 185325867, now seen corresponding path program 1 times [2025-03-09 06:22:01,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:01,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805005379] [2025-03-09 06:22:01,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:01,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:01,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:22:01,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:22:01,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:01,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:01,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:01,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805005379] [2025-03-09 06:22:01,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805005379] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:01,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:01,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083687513] [2025-03-09 06:22:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:01,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:01,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:01,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:01,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:01,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:01,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:01,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:01,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:01,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:01,490 INFO L124 PetriNetUnfolderBase]: 510/941 cut-off events. [2025-03-09 06:22:01,490 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:22:01,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 941 events. 510/941 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4953 event pairs, 208 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 1748. Up to 421 conditions per place. [2025-03-09 06:22:01,498 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 31 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2025-03-09 06:22:01,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 162 flow [2025-03-09 06:22:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-03-09 06:22:01,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2025-03-09 06:22:01,511 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 71 transitions. [2025-03-09 06:22:01,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 162 flow [2025-03-09 06:22:01,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:01,517 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2025-03-09 06:22:01,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2025-03-09 06:22:01,522 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2025-03-09 06:22:01,522 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2025-03-09 06:22:01,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:01,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:01,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:22:01,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:22:01,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:01,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash 185325868, now seen corresponding path program 1 times [2025-03-09 06:22:01,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:01,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454510397] [2025-03-09 06:22:01,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:01,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:01,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:22:01,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:22:01,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:01,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:01,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454510397] [2025-03-09 06:22:01,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454510397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:01,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:01,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:01,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262023700] [2025-03-09 06:22:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:01,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:01,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:01,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:01,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:01,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:01,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:01,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:01,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:01,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:01,687 INFO L124 PetriNetUnfolderBase]: 499/971 cut-off events. [2025-03-09 06:22:01,687 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2025-03-09 06:22:01,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 971 events. 499/971 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5049 event pairs, 182 based on Foata normal form. 26/890 useless extension candidates. Maximal degree in co-relation 1943. Up to 466 conditions per place. [2025-03-09 06:22:01,695 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 31 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2025-03-09 06:22:01,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 186 flow [2025-03-09 06:22:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-09 06:22:01,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-09 06:22:01,696 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 70 transitions. [2025-03-09 06:22:01,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 186 flow [2025-03-09 06:22:01,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:01,699 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2025-03-09 06:22:01,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2025-03-09 06:22:01,699 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2025-03-09 06:22:01,699 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2025-03-09 06:22:01,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:01,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:01,700 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:01,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:22:01,700 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:01,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:01,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2004506799, now seen corresponding path program 1 times [2025-03-09 06:22:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:01,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131675512] [2025-03-09 06:22:01,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:01,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:01,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:22:01,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:22:01,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:01,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:01,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:01,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131675512] [2025-03-09 06:22:01,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131675512] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:01,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:01,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:01,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310012431] [2025-03-09 06:22:01,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:01,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:01,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:01,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:01,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:01,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:22:01,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:01,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:01,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:22:01,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:02,050 INFO L124 PetriNetUnfolderBase]: 1181/2230 cut-off events. [2025-03-09 06:22:02,051 INFO L125 PetriNetUnfolderBase]: For 710/710 co-relation queries the response was YES. [2025-03-09 06:22:02,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 2230 events. 1181/2230 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14007 event pairs, 558 based on Foata normal form. 104/2089 useless extension candidates. Maximal degree in co-relation 4638. Up to 1241 conditions per place. [2025-03-09 06:22:02,063 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 56 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2025-03-09 06:22:02,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 66 transitions, 322 flow [2025-03-09 06:22:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-03-09 06:22:02,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2025-03-09 06:22:02,066 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 91 transitions. [2025-03-09 06:22:02,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 66 transitions, 322 flow [2025-03-09 06:22:02,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 66 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:02,068 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2025-03-09 06:22:02,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2025-03-09 06:22:02,068 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2025-03-09 06:22:02,068 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2025-03-09 06:22:02,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:02,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:02,070 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:02,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:22:02,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:02,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:02,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1984850697, now seen corresponding path program 1 times [2025-03-09 06:22:02,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:02,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63937250] [2025-03-09 06:22:02,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:02,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:02,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:22:02,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:22:02,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:02,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:02,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63937250] [2025-03-09 06:22:02,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63937250] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:02,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:02,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:02,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696142767] [2025-03-09 06:22:02,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:02,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:02,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:02,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:02,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:02,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:02,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:02,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:02,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:02,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:02,258 INFO L124 PetriNetUnfolderBase]: 791/1734 cut-off events. [2025-03-09 06:22:02,259 INFO L125 PetriNetUnfolderBase]: For 752/768 co-relation queries the response was YES. [2025-03-09 06:22:02,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 1734 events. 791/1734 cut-off events. For 752/768 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11553 event pairs, 279 based on Foata normal form. 6/1619 useless extension candidates. Maximal degree in co-relation 3906. Up to 791 conditions per place. [2025-03-09 06:22:02,267 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 41 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2025-03-09 06:22:02,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 279 flow [2025-03-09 06:22:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-03-09 06:22:02,269 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2025-03-09 06:22:02,269 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 73 transitions. [2025-03-09 06:22:02,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 279 flow [2025-03-09 06:22:02,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:02,272 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2025-03-09 06:22:02,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2025-03-09 06:22:02,273 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2025-03-09 06:22:02,273 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2025-03-09 06:22:02,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:02,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:02,274 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:02,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:22:02,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:02,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1984850698, now seen corresponding path program 1 times [2025-03-09 06:22:02,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:02,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271799284] [2025-03-09 06:22:02,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:02,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:02,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:22:02,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:22:02,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:02,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:02,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:02,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271799284] [2025-03-09 06:22:02,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271799284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:02,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:02,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:02,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833130670] [2025-03-09 06:22:02,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:02,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:02,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:02,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:02,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:02,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:02,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:02,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:02,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:02,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:02,440 INFO L124 PetriNetUnfolderBase]: 753/1716 cut-off events. [2025-03-09 06:22:02,441 INFO L125 PetriNetUnfolderBase]: For 1013/1029 co-relation queries the response was YES. [2025-03-09 06:22:02,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4132 conditions, 1716 events. 753/1716 cut-off events. For 1013/1029 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11602 event pairs, 217 based on Foata normal form. 42/1701 useless extension candidates. Maximal degree in co-relation 4114. Up to 835 conditions per place. [2025-03-09 06:22:02,449 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 41 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2025-03-09 06:22:02,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 302 flow [2025-03-09 06:22:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-03-09 06:22:02,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2025-03-09 06:22:02,451 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 72 transitions. [2025-03-09 06:22:02,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 302 flow [2025-03-09 06:22:02,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:02,456 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2025-03-09 06:22:02,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2025-03-09 06:22:02,457 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2025-03-09 06:22:02,458 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2025-03-09 06:22:02,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:02,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:02,458 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:02,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:22:02,459 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:02,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:02,459 INFO L85 PathProgramCache]: Analyzing trace with hash 476048493, now seen corresponding path program 1 times [2025-03-09 06:22:02,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:02,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155695288] [2025-03-09 06:22:02,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:02,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:02,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:22:02,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:22:02,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:02,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155695288] [2025-03-09 06:22:02,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155695288] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:02,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:02,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876337718] [2025-03-09 06:22:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:02,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:02,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:02,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:02,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:02,519 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:22:02,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:02,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:02,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:22:02,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:02,758 INFO L124 PetriNetUnfolderBase]: 1197/2294 cut-off events. [2025-03-09 06:22:02,758 INFO L125 PetriNetUnfolderBase]: For 1748/1947 co-relation queries the response was YES. [2025-03-09 06:22:02,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5719 conditions, 2294 events. 1197/2294 cut-off events. For 1748/1947 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14882 event pairs, 700 based on Foata normal form. 147/2346 useless extension candidates. Maximal degree in co-relation 5700. Up to 1481 conditions per place. [2025-03-09 06:22:02,774 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2025-03-09 06:22:02,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 396 flow [2025-03-09 06:22:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-03-09 06:22:02,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796875 [2025-03-09 06:22:02,777 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 87 transitions. [2025-03-09 06:22:02,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 396 flow [2025-03-09 06:22:02,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:02,784 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2025-03-09 06:22:02,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2025-03-09 06:22:02,785 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2025-03-09 06:22:02,786 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2025-03-09 06:22:02,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:02,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:02,786 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:02,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:22:02,787 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:02,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1652667496, now seen corresponding path program 1 times [2025-03-09 06:22:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:02,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708508291] [2025-03-09 06:22:02,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:02,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:02,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:02,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:02,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:02,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:02,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:02,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708508291] [2025-03-09 06:22:02,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708508291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:02,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:02,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:02,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161181458] [2025-03-09 06:22:02,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:02,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:02,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:02,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:02,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:02,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:02,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:02,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:02,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:02,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:03,124 INFO L124 PetriNetUnfolderBase]: 1021/2270 cut-off events. [2025-03-09 06:22:03,124 INFO L125 PetriNetUnfolderBase]: For 1871/2056 co-relation queries the response was YES. [2025-03-09 06:22:03,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6024 conditions, 2270 events. 1021/2270 cut-off events. For 1871/2056 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16343 event pairs, 193 based on Foata normal form. 120/2344 useless extension candidates. Maximal degree in co-relation 6003. Up to 674 conditions per place. [2025-03-09 06:22:03,145 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 58 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2025-03-09 06:22:03,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 477 flow [2025-03-09 06:22:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-03-09 06:22:03,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.725 [2025-03-09 06:22:03,147 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 116 transitions. [2025-03-09 06:22:03,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 477 flow [2025-03-09 06:22:03,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:03,152 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 272 flow [2025-03-09 06:22:03,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-03-09 06:22:03,153 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2025-03-09 06:22:03,153 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 272 flow [2025-03-09 06:22:03,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:03,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:03,153 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:03,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:22:03,153 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:03,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:03,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1652667497, now seen corresponding path program 1 times [2025-03-09 06:22:03,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:03,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147507143] [2025-03-09 06:22:03,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:03,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:03,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:03,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:03,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147507143] [2025-03-09 06:22:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147507143] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:03,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:03,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67353379] [2025-03-09 06:22:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:03,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:03,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:03,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:03,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:03,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:03,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:03,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:03,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:03,473 INFO L124 PetriNetUnfolderBase]: 1098/2481 cut-off events. [2025-03-09 06:22:03,474 INFO L125 PetriNetUnfolderBase]: For 4261/4434 co-relation queries the response was YES. [2025-03-09 06:22:03,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 2481 events. 1098/2481 cut-off events. For 4261/4434 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17971 event pairs, 268 based on Foata normal form. 183/2571 useless extension candidates. Maximal degree in co-relation 6945. Up to 809 conditions per place. [2025-03-09 06:22:03,497 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 63 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2025-03-09 06:22:03,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 564 flow [2025-03-09 06:22:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:03,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-09 06:22:03,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.73125 [2025-03-09 06:22:03,498 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 272 flow. Second operand 5 states and 117 transitions. [2025-03-09 06:22:03,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 564 flow [2025-03-09 06:22:03,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 541 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:03,505 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 327 flow [2025-03-09 06:22:03,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2025-03-09 06:22:03,506 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2025-03-09 06:22:03,507 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 327 flow [2025-03-09 06:22:03,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:03,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:03,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:03,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:22:03,508 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:03,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1017608297, now seen corresponding path program 1 times [2025-03-09 06:22:03,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:03,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407465237] [2025-03-09 06:22:03,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:03,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:03,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:03,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:03,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:03,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:03,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:03,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407465237] [2025-03-09 06:22:03,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407465237] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:03,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:03,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:03,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507446696] [2025-03-09 06:22:03,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:03,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:03,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:03,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:03,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:03,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:03,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:03,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:03,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:03,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:03,669 INFO L124 PetriNetUnfolderBase]: 903/1917 cut-off events. [2025-03-09 06:22:03,669 INFO L125 PetriNetUnfolderBase]: For 3740/3971 co-relation queries the response was YES. [2025-03-09 06:22:03,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 1917 events. 903/1917 cut-off events. For 3740/3971 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12677 event pairs, 696 based on Foata normal form. 161/1993 useless extension candidates. Maximal degree in co-relation 5545. Up to 1466 conditions per place. [2025-03-09 06:22:03,679 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 32 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2025-03-09 06:22:03,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 330 flow [2025-03-09 06:22:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-03-09 06:22:03,680 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-09 06:22:03,680 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 327 flow. Second operand 3 states and 56 transitions. [2025-03-09 06:22:03,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 330 flow [2025-03-09 06:22:03,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 314 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:03,688 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 250 flow [2025-03-09 06:22:03,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2025-03-09 06:22:03,689 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2025-03-09 06:22:03,689 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 250 flow [2025-03-09 06:22:03,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:03,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:03,689 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:03,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:22:03,689 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:03,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1017608296, now seen corresponding path program 1 times [2025-03-09 06:22:03,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:03,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666733713] [2025-03-09 06:22:03,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:03,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:03,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:03,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:03,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:03,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:03,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:03,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666733713] [2025-03-09 06:22:03,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666733713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:03,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:03,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:03,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311765804] [2025-03-09 06:22:03,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:03,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:03,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:03,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:03,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:03,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:03,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:03,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:03,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:03,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:03,920 INFO L124 PetriNetUnfolderBase]: 1002/2330 cut-off events. [2025-03-09 06:22:03,920 INFO L125 PetriNetUnfolderBase]: For 2596/2781 co-relation queries the response was YES. [2025-03-09 06:22:03,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 2330 events. 1002/2330 cut-off events. For 2596/2781 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16530 event pairs, 199 based on Foata normal form. 110/2367 useless extension candidates. Maximal degree in co-relation 6199. Up to 1168 conditions per place. [2025-03-09 06:22:03,930 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 58 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2025-03-09 06:22:03,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 480 flow [2025-03-09 06:22:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2025-03-09 06:22:03,931 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68125 [2025-03-09 06:22:03,932 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 250 flow. Second operand 5 states and 109 transitions. [2025-03-09 06:22:03,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 480 flow [2025-03-09 06:22:03,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:03,936 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 271 flow [2025-03-09 06:22:03,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2025-03-09 06:22:03,937 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-03-09 06:22:03,937 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 271 flow [2025-03-09 06:22:03,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:03,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:03,937 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:03,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:22:03,937 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:03,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2101859406, now seen corresponding path program 1 times [2025-03-09 06:22:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148726955] [2025-03-09 06:22:03,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:03,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:22:03,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:22:03,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:03,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:03,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:03,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148726955] [2025-03-09 06:22:03,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148726955] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:03,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44197826] [2025-03-09 06:22:03,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:03,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:03,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:04,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:04,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:22:04,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:22:04,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:22:04,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:04,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:04,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:22:04,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:04,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:22:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44197826] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:04,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:22:04,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-09 06:22:04,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611926231] [2025-03-09 06:22:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:04,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:22:04,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:04,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:22:04,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:22:04,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:04,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:04,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:04,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:04,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:04,359 INFO L124 PetriNetUnfolderBase]: 1858/3390 cut-off events. [2025-03-09 06:22:04,359 INFO L125 PetriNetUnfolderBase]: For 4438/4674 co-relation queries the response was YES. [2025-03-09 06:22:04,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 3390 events. 1858/3390 cut-off events. For 4438/4674 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21685 event pairs, 259 based on Foata normal form. 202/3404 useless extension candidates. Maximal degree in co-relation 9769. Up to 1361 conditions per place. [2025-03-09 06:22:04,370 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2025-03-09 06:22:04,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 566 flow [2025-03-09 06:22:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-03-09 06:22:04,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-09 06:22:04,372 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 271 flow. Second operand 4 states and 76 transitions. [2025-03-09 06:22:04,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 566 flow [2025-03-09 06:22:04,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 552 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:04,379 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 271 flow [2025-03-09 06:22:04,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2025-03-09 06:22:04,381 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-03-09 06:22:04,381 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 271 flow [2025-03-09 06:22:04,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:04,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:04,381 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:22:04,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:22:04,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-09 06:22:04,582 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:04,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:04,582 INFO L85 PathProgramCache]: Analyzing trace with hash -733131992, now seen corresponding path program 1 times [2025-03-09 06:22:04,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:04,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308071415] [2025-03-09 06:22:04,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:04,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:04,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:22:04,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:22:04,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:04,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:22:04,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:04,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308071415] [2025-03-09 06:22:04,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308071415] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:04,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:04,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123272574] [2025-03-09 06:22:04,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:04,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:04,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:04,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:04,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:04,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:04,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:04,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:04,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:04,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:04,814 INFO L124 PetriNetUnfolderBase]: 1583/3216 cut-off events. [2025-03-09 06:22:04,814 INFO L125 PetriNetUnfolderBase]: For 4752/4869 co-relation queries the response was YES. [2025-03-09 06:22:04,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9374 conditions, 3216 events. 1583/3216 cut-off events. For 4752/4869 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21736 event pairs, 358 based on Foata normal form. 178/3347 useless extension candidates. Maximal degree in co-relation 9348. Up to 1262 conditions per place. [2025-03-09 06:22:04,829 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2025-03-09 06:22:04,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 562 flow [2025-03-09 06:22:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-03-09 06:22:04,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-09 06:22:04,831 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 271 flow. Second operand 4 states and 76 transitions. [2025-03-09 06:22:04,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 562 flow [2025-03-09 06:22:04,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:04,841 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 275 flow [2025-03-09 06:22:04,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2025-03-09 06:22:04,842 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-03-09 06:22:04,842 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 275 flow [2025-03-09 06:22:04,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:04,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:04,843 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:04,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:22:04,843 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:04,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1110404095, now seen corresponding path program 1 times [2025-03-09 06:22:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:04,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732197897] [2025-03-09 06:22:04,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:04,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:04,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:22:04,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:22:04,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:04,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:04,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732197897] [2025-03-09 06:22:04,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732197897] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:04,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915276347] [2025-03-09 06:22:04,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:04,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:04,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:04,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:04,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:22:04,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:22:04,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:22:04,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:04,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:04,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:22:04,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:05,005 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:22:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915276347] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:05,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:22:05,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:22:05,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541827223] [2025-03-09 06:22:05,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:05,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:22:05,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:05,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:22:05,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:22:05,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:22:05,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:05,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:05,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:22:05,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:05,371 INFO L124 PetriNetUnfolderBase]: 1521/2931 cut-off events. [2025-03-09 06:22:05,371 INFO L125 PetriNetUnfolderBase]: For 5613/5705 co-relation queries the response was YES. [2025-03-09 06:22:05,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8772 conditions, 2931 events. 1521/2931 cut-off events. For 5613/5705 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19053 event pairs, 142 based on Foata normal form. 207/3017 useless extension candidates. Maximal degree in co-relation 8746. Up to 984 conditions per place. [2025-03-09 06:22:05,389 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 81 selfloop transitions, 6 changer transitions 1/95 dead transitions. [2025-03-09 06:22:05,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 726 flow [2025-03-09 06:22:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:22:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:22:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-03-09 06:22:05,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-09 06:22:05,390 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 275 flow. Second operand 6 states and 114 transitions. [2025-03-09 06:22:05,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 726 flow [2025-03-09 06:22:05,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:05,399 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 275 flow [2025-03-09 06:22:05,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2025-03-09 06:22:05,399 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2025-03-09 06:22:05,399 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 275 flow [2025-03-09 06:22:05,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:05,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:05,400 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:05,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:22:05,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-09 06:22:05,601 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:05,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash 832893443, now seen corresponding path program 1 times [2025-03-09 06:22:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:05,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647304368] [2025-03-09 06:22:05,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:05,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:05,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:05,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:05,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:05,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:05,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647304368] [2025-03-09 06:22:05,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647304368] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:05,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354739345] [2025-03-09 06:22:05,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:05,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:05,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:05,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:22:05,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:05,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:05,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:05,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:05,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:22:05,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:05,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:05,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354739345] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:05,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:05,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-03-09 06:22:05,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064614547] [2025-03-09 06:22:05,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:05,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:22:05,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:05,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:22:05,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:22:05,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:05,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 275 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:05,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:05,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:05,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:06,065 INFO L124 PetriNetUnfolderBase]: 1339/2904 cut-off events. [2025-03-09 06:22:06,065 INFO L125 PetriNetUnfolderBase]: For 6270/6352 co-relation queries the response was YES. [2025-03-09 06:22:06,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8846 conditions, 2904 events. 1339/2904 cut-off events. For 6270/6352 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18824 event pairs, 119 based on Foata normal form. 227/3108 useless extension candidates. Maximal degree in co-relation 8819. Up to 507 conditions per place. [2025-03-09 06:22:06,080 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 73 selfloop transitions, 12 changer transitions 4/99 dead transitions. [2025-03-09 06:22:06,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 703 flow [2025-03-09 06:22:06,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:22:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:22:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2025-03-09 06:22:06,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2025-03-09 06:22:06,081 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 275 flow. Second operand 7 states and 158 transitions. [2025-03-09 06:22:06,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 703 flow [2025-03-09 06:22:06,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 676 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-03-09 06:22:06,092 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 379 flow [2025-03-09 06:22:06,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2025-03-09 06:22:06,092 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2025-03-09 06:22:06,093 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 379 flow [2025-03-09 06:22:06,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:06,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:06,093 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:06,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:22:06,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:06,294 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:06,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:06,294 INFO L85 PathProgramCache]: Analyzing trace with hash 62788742, now seen corresponding path program 1 times [2025-03-09 06:22:06,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:06,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002571141] [2025-03-09 06:22:06,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:06,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:06,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:06,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:06,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:06,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:22:06,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:06,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002571141] [2025-03-09 06:22:06,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002571141] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:06,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:06,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:06,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360407383] [2025-03-09 06:22:06,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:06,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:06,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:06,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:06,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:06,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:06,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:06,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:06,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:06,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:06,625 INFO L124 PetriNetUnfolderBase]: 2138/3893 cut-off events. [2025-03-09 06:22:06,626 INFO L125 PetriNetUnfolderBase]: For 10005/10082 co-relation queries the response was YES. [2025-03-09 06:22:06,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12733 conditions, 3893 events. 2138/3893 cut-off events. For 10005/10082 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 22890 event pairs, 503 based on Foata normal form. 257/4109 useless extension candidates. Maximal degree in co-relation 12701. Up to 1567 conditions per place. [2025-03-09 06:22:06,652 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 69 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2025-03-09 06:22:06,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 764 flow [2025-03-09 06:22:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-03-09 06:22:06,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-03-09 06:22:06,658 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 379 flow. Second operand 4 states and 72 transitions. [2025-03-09 06:22:06,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 764 flow [2025-03-09 06:22:06,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 729 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:06,674 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 372 flow [2025-03-09 06:22:06,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2025-03-09 06:22:06,675 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2025-03-09 06:22:06,675 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 372 flow [2025-03-09 06:22:06,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:06,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:06,675 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:06,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:22:06,675 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:06,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1967023659, now seen corresponding path program 1 times [2025-03-09 06:22:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363697262] [2025-03-09 06:22:06,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:06,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 06:22:06,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:22:06,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:06,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:06,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363697262] [2025-03-09 06:22:06,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363697262] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896698431] [2025-03-09 06:22:06,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:06,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:06,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:06,745 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:06,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:22:06,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 06:22:06,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:22:06,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:06,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:06,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:22:06,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:06,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:06,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896698431] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:06,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:06,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-09 06:22:06,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235501472] [2025-03-09 06:22:06,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:06,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:22:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:06,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:22:06,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:22:06,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:06,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 372 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:06,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:06,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:06,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:07,283 INFO L124 PetriNetUnfolderBase]: 1744/3743 cut-off events. [2025-03-09 06:22:07,283 INFO L125 PetriNetUnfolderBase]: For 12928/12958 co-relation queries the response was YES. [2025-03-09 06:22:07,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11877 conditions, 3743 events. 1744/3743 cut-off events. For 12928/12958 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 23155 event pairs, 59 based on Foata normal form. 200/3940 useless extension candidates. Maximal degree in co-relation 11846. Up to 457 conditions per place. [2025-03-09 06:22:07,298 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 100 selfloop transitions, 17 changer transitions 17/144 dead transitions. [2025-03-09 06:22:07,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 144 transitions, 1032 flow [2025-03-09 06:22:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:22:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:22:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 268 transitions. [2025-03-09 06:22:07,299 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2025-03-09 06:22:07,299 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 372 flow. Second operand 12 states and 268 transitions. [2025-03-09 06:22:07,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 144 transitions, 1032 flow [2025-03-09 06:22:07,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 144 transitions, 995 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:07,310 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 429 flow [2025-03-09 06:22:07,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2025-03-09 06:22:07,310 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2025-03-09 06:22:07,310 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 429 flow [2025-03-09 06:22:07,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:07,311 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:07,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 06:22:07,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 06:22:07,512 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:07,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash -58641131, now seen corresponding path program 1 times [2025-03-09 06:22:07,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:07,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392563797] [2025-03-09 06:22:07,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:07,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:07,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 06:22:07,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 06:22:07,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:07,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:07,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:07,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392563797] [2025-03-09 06:22:07,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392563797] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:07,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233597051] [2025-03-09 06:22:07,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:07,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:07,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:07,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:07,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:22:07,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 06:22:07,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 06:22:07,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:07,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:07,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:22:07,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:07,717 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:07,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233597051] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:07,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:07,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-03-09 06:22:07,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533182593] [2025-03-09 06:22:07,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:07,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 06:22:07,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:07,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 06:22:07,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-03-09 06:22:07,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:07,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 429 flow. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:07,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:07,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:08,497 INFO L124 PetriNetUnfolderBase]: 2554/5409 cut-off events. [2025-03-09 06:22:08,498 INFO L125 PetriNetUnfolderBase]: For 19397/19439 co-relation queries the response was YES. [2025-03-09 06:22:08,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17144 conditions, 5409 events. 2554/5409 cut-off events. For 19397/19439 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 33758 event pairs, 119 based on Foata normal form. 192/5588 useless extension candidates. Maximal degree in co-relation 17105. Up to 647 conditions per place. [2025-03-09 06:22:08,523 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 120 selfloop transitions, 24 changer transitions 25/179 dead transitions. [2025-03-09 06:22:08,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 179 transitions, 1332 flow [2025-03-09 06:22:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:22:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:22:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 334 transitions. [2025-03-09 06:22:08,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2025-03-09 06:22:08,525 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 429 flow. Second operand 15 states and 334 transitions. [2025-03-09 06:22:08,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 179 transitions, 1332 flow [2025-03-09 06:22:08,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1319 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:08,544 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 580 flow [2025-03-09 06:22:08,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=580, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2025-03-09 06:22:08,544 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2025-03-09 06:22:08,544 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 580 flow [2025-03-09 06:22:08,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:08,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:08,545 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:08,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:22:08,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 06:22:08,745 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:08,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash -233061099, now seen corresponding path program 2 times [2025-03-09 06:22:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:08,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201395460] [2025-03-09 06:22:08,746 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:22:08,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:08,754 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-09 06:22:08,765 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 06:22:08,765 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:22:08,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:08,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:08,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201395460] [2025-03-09 06:22:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201395460] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:08,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587342902] [2025-03-09 06:22:08,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:22:08,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:08,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:08,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:08,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:22:08,966 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-09 06:22:08,982 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 06:22:08,982 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:22:08,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:08,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 06:22:08,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 06:22:09,139 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:22:09,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587342902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:09,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:22:09,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 26 [2025-03-09 06:22:09,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184659696] [2025-03-09 06:22:09,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:09,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:22:09,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:09,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:22:09,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2025-03-09 06:22:09,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:09,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 580 flow. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:09,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:09,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:09,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:10,340 INFO L124 PetriNetUnfolderBase]: 7304/12824 cut-off events. [2025-03-09 06:22:10,340 INFO L125 PetriNetUnfolderBase]: For 30582/30824 co-relation queries the response was YES. [2025-03-09 06:22:10,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41542 conditions, 12824 events. 7304/12824 cut-off events. For 30582/30824 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 87461 event pairs, 293 based on Foata normal form. 552/13370 useless extension candidates. Maximal degree in co-relation 41505. Up to 2208 conditions per place. [2025-03-09 06:22:10,380 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 243/243 dead transitions. [2025-03-09 06:22:10,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 243 transitions, 2451 flow [2025-03-09 06:22:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:22:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:22:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 231 transitions. [2025-03-09 06:22:10,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5552884615384616 [2025-03-09 06:22:10,381 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 580 flow. Second operand 13 states and 231 transitions. [2025-03-09 06:22:10,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 243 transitions, 2451 flow [2025-03-09 06:22:10,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 243 transitions, 1925 flow, removed 4 selfloop flow, removed 30 redundant places. [2025-03-09 06:22:10,409 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2025-03-09 06:22:10,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2025-03-09 06:22:10,410 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 47 predicate places. [2025-03-09 06:22:10,410 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2025-03-09 06:22:10,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:10,412 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-03-09 06:22:10,412 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2025-03-09 06:22:10,412 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-03-09 06:22:10,412 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-03-09 06:22:10,412 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-03-09 06:22:10,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-03-09 06:22:10,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:10,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 06:22:10,614 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:10,618 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:22:10,618 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:22:10,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:22:10 BasicIcfg [2025-03-09 06:22:10,625 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:22:10,625 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:22:10,625 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:22:10,625 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:22:10,626 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:22:00" (3/4) ... [2025-03-09 06:22:10,627 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:22:10,629 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-03-09 06:22:10,629 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-03-09 06:22:10,632 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2025-03-09 06:22:10,632 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-09 06:22:10,632 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-09 06:22:10,632 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-09 06:22:10,632 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 06:22:10,689 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:22:10,690 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:22:10,690 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:22:10,690 INFO L158 Benchmark]: Toolchain (without parser) took 10603.03ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 109.6MB in the beginning and 232.6MB in the end (delta: -123.1MB). Peak memory consumption was 154.4MB. Max. memory is 16.1GB. [2025-03-09 06:22:10,690 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 201.3MB. Free memory is still 127.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:10,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.22ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 89.5MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 06:22:10,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.27ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 88.3MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:22:10,691 INFO L158 Benchmark]: Boogie Preprocessor took 33.96ms. Allocated memory is still 142.6MB. Free memory was 88.3MB in the beginning and 87.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:10,691 INFO L158 Benchmark]: IcfgBuilder took 369.19ms. Allocated memory is still 142.6MB. Free memory was 87.3MB in the beginning and 66.4MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 06:22:10,691 INFO L158 Benchmark]: TraceAbstraction took 9724.50ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 66.4MB in the beginning and 236.9MB in the end (delta: -170.5MB). Peak memory consumption was 305.4MB. Max. memory is 16.1GB. [2025-03-09 06:22:10,691 INFO L158 Benchmark]: Witness Printer took 64.55ms. Allocated memory is still 419.4MB. Free memory was 236.9MB in the beginning and 232.6MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:22:10,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 201.3MB. Free memory is still 127.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 360.22ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 89.5MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.27ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 88.3MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.96ms. Allocated memory is still 142.6MB. Free memory was 88.3MB in the beginning and 87.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 369.19ms. Allocated memory is still 142.6MB. Free memory was 87.3MB in the beginning and 66.4MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9724.50ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 66.4MB in the beginning and 236.9MB in the end (delta: -170.5MB). Peak memory consumption was 305.4MB. Max. memory is 16.1GB. * Witness Printer took 64.55ms. Allocated memory is still 419.4MB. Free memory was 236.9MB in the beginning and 232.6MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: 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, 55 locations, 56 edges, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.6s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1207 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1178 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1959 IncrementalHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 20 mSDtfsCounter, 1959 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=580occurred in iteration=17, InterpolantAutomatonStates: 103, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 440 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 1370 SizeOfPredicates, 20 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 123/347 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! [2025-03-09 06:22:10,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE