./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:50:25,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:50:25,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:50:25,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:50:25,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:50:25,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:50:25,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:50:25,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:50:25,285 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:50:25,285 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:50:25,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:50:25,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:50:25,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:50:25,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:50:25,287 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:50:25,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:50:25,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:50:25,287 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:50:25,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:50:25,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:50:25,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:50:25,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:50:25,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:50:25,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:50:25,288 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:50:25,289 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:50:25,289 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:50:25,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:50:25,289 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:50:25,289 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:50:25,290 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:50:25,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:50:25,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:50:25,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:50:25,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:50:25,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:50:25,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:50:25,290 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:50:25,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:50:25,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:50:25,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:50:25,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:50:25,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:50:25,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:50:25,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:50:25,291 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2025-02-06 18:50:25,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:50:25,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:50:25,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:50:25,622 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:50:25,622 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:50:25,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2025-02-06 18:50:26,961 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1e53e230d/a94f01116c8046a8b6c3380ef822803b/FLAG87f241810 [2025-02-06 18:50:27,230 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:50:27,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2025-02-06 18:50:27,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1e53e230d/a94f01116c8046a8b6c3380ef822803b/FLAG87f241810 [2025-02-06 18:50:27,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1e53e230d/a94f01116c8046a8b6c3380ef822803b [2025-02-06 18:50:27,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:50:27,263 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:50:27,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:50:27,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:50:27,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:50:27,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187e9bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27, skipping insertion in model container [2025-02-06 18:50:27,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,288 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:50:27,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:50:27,463 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:50:27,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:50:27,505 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:50:27,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27 WrapperNode [2025-02-06 18:50:27,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:50:27,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:50:27,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:50:27,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:50:27,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,534 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2025-02-06 18:50:27,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:50:27,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:50:27,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:50:27,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:50:27,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,547 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,565 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 18:50:27,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,573 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,575 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:50:27,581 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:50:27,581 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:50:27,581 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:50:27,582 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (1/1) ... [2025-02-06 18:50:27,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:50:27,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:27,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:50:27,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:50:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:50:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:50:27,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:50:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:50:27,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:50:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:50:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:50:27,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:50:27,649 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:50:27,731 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:50:27,732 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:50:27,923 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:50:27,924 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:50:28,060 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:50:28,061 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:50:28,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:50:28 BoogieIcfgContainer [2025-02-06 18:50:28,061 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:50:28,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:50:28,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:50:28,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:50:28,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:50:27" (1/3) ... [2025-02-06 18:50:28,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af9b47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:50:28, skipping insertion in model container [2025-02-06 18:50:28,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:27" (2/3) ... [2025-02-06 18:50:28,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af9b47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:50:28, skipping insertion in model container [2025-02-06 18:50:28,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:50:28" (3/3) ... [2025-02-06 18:50:28,075 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2025-02-06 18:50:28,096 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:50:28,097 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-3.wvr.c that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-06 18:50:28,097 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:50:28,171 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:50:28,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 86 flow [2025-02-06 18:50:28,244 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-06 18:50:28,248 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:50:28,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 4/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 99 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-02-06 18:50:28,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 86 flow [2025-02-06 18:50:28,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 73 flow [2025-02-06 18:50:28,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:50:28,286 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;@758747e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:50:28,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-06 18:50:28,291 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:50:28,293 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-02-06 18:50:28,293 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:50:28,294 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:28,295 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:50:28,296 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:50:28,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1296118603, now seen corresponding path program 1 times [2025-02-06 18:50:28,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:28,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618248612] [2025-02-06 18:50:28,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:28,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:28,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:50:28,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:50:28,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:28,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:28,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:28,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618248612] [2025-02-06 18:50:28,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618248612] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:28,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:28,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:50:28,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168992003] [2025-02-06 18:50:28,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:28,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:50:28,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:28,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:50:28,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:50:28,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:50:28,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:28,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:28,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:50:28,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:28,821 INFO L124 PetriNetUnfolderBase]: 478/752 cut-off events. [2025-02-06 18:50:28,822 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-02-06 18:50:28,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 752 events. 478/752 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3524 event pairs, 68 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 1362. Up to 631 conditions per place. [2025-02-06 18:50:28,832 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 27 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2025-02-06 18:50:28,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 163 flow [2025-02-06 18:50:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:50:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:50:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2025-02-06 18:50:28,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2025-02-06 18:50:28,849 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 73 flow. Second operand 3 states and 76 transitions. [2025-02-06 18:50:28,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 163 flow [2025-02-06 18:50:28,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 155 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:50:28,858 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 115 flow [2025-02-06 18:50:28,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2025-02-06 18:50:28,866 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2025-02-06 18:50:28,867 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 115 flow [2025-02-06 18:50:28,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:28,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:28,867 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:28,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:50:28,868 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:50:28,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1226411179, now seen corresponding path program 1 times [2025-02-06 18:50:28,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:28,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718027222] [2025-02-06 18:50:28,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:28,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:28,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:50:28,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:50:28,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:28,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:29,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:29,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718027222] [2025-02-06 18:50:29,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718027222] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:29,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298358963] [2025-02-06 18:50:29,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:29,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:29,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:29,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:29,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:50:29,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:50:29,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:50:29,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:29,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:29,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:50:29,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:29,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:50:29,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298358963] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:29,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:50:29,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-02-06 18:50:29,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165817177] [2025-02-06 18:50:29,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:29,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:50:29,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:29,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:50:29,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:50:29,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:50:29,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:29,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:29,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:50:29,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:29,276 INFO L124 PetriNetUnfolderBase]: 294/501 cut-off events. [2025-02-06 18:50:29,276 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2025-02-06 18:50:29,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 501 events. 294/501 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2412 event pairs, 137 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 494. Up to 432 conditions per place. [2025-02-06 18:50:29,284 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 23 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2025-02-06 18:50:29,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 155 flow [2025-02-06 18:50:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:50:29,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:50:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-02-06 18:50:29,288 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2025-02-06 18:50:29,288 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 115 flow. Second operand 3 states and 58 transitions. [2025-02-06 18:50:29,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 155 flow [2025-02-06 18:50:29,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:29,291 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 104 flow [2025-02-06 18:50:29,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2025-02-06 18:50:29,292 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2025-02-06 18:50:29,293 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 104 flow [2025-02-06 18:50:29,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:29,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:29,293 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:29,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:50:29,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:29,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:50:29,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1226411178, now seen corresponding path program 1 times [2025-02-06 18:50:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839747478] [2025-02-06 18:50:29,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:29,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:29,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:50:29,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:50:29,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:29,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:29,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:29,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839747478] [2025-02-06 18:50:29,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839747478] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:29,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388270088] [2025-02-06 18:50:29,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:29,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:29,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:29,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:29,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:50:29,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:50:29,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:50:29,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:29,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:29,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:29,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:29,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388270088] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:29,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:29,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-02-06 18:50:29,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537656293] [2025-02-06 18:50:29,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:29,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 18:50:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:29,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 18:50:29,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:50:29,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:50:29,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:29,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:29,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:50:29,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:30,108 INFO L124 PetriNetUnfolderBase]: 947/1628 cut-off events. [2025-02-06 18:50:30,108 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2025-02-06 18:50:30,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 1628 events. 947/1628 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8015 event pairs, 29 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 3712. Up to 731 conditions per place. [2025-02-06 18:50:30,119 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 62 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2025-02-06 18:50:30,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 97 transitions, 469 flow [2025-02-06 18:50:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:50:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:50:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-02-06 18:50:30,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2025-02-06 18:50:30,121 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 104 flow. Second operand 7 states and 186 transitions. [2025-02-06 18:50:30,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 97 transitions, 469 flow [2025-02-06 18:50:30,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 97 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:30,123 INFO L231 Difference]: Finished difference. Result has 43 places, 54 transitions, 318 flow [2025-02-06 18:50:30,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=43, PETRI_TRANSITIONS=54} [2025-02-06 18:50:30,124 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2025-02-06 18:50:30,124 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 54 transitions, 318 flow [2025-02-06 18:50:30,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:30,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:30,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:30,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:50:30,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:30,329 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:50:30,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:30,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1237932482, now seen corresponding path program 1 times [2025-02-06 18:50:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:30,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450982130] [2025-02-06 18:50:30,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:30,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:30,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:50:30,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:50:30,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:30,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:30,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:30,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450982130] [2025-02-06 18:50:30,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450982130] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:30,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:30,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:50:30,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527173650] [2025-02-06 18:50:30,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:30,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:30,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:30,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:30,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:30,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:50:30,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 54 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:30,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:30,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:50:30,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:30,725 INFO L124 PetriNetUnfolderBase]: 1107/1942 cut-off events. [2025-02-06 18:50:30,725 INFO L125 PetriNetUnfolderBase]: For 4728/4728 co-relation queries the response was YES. [2025-02-06 18:50:30,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6074 conditions, 1942 events. 1107/1942 cut-off events. For 4728/4728 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10145 event pairs, 104 based on Foata normal form. 99/1886 useless extension candidates. Maximal degree in co-relation 6061. Up to 1369 conditions per place. [2025-02-06 18:50:30,748 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 51 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2025-02-06 18:50:30,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 588 flow [2025-02-06 18:50:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2025-02-06 18:50:30,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2025-02-06 18:50:30,752 INFO L175 Difference]: Start difference. First operand has 43 places, 54 transitions, 318 flow. Second operand 4 states and 100 transitions. [2025-02-06 18:50:30,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 588 flow [2025-02-06 18:50:30,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 80 transitions, 571 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:30,765 INFO L231 Difference]: Finished difference. Result has 47 places, 68 transitions, 517 flow [2025-02-06 18:50:30,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=517, PETRI_PLACES=47, PETRI_TRANSITIONS=68} [2025-02-06 18:50:30,766 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2025-02-06 18:50:30,766 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 68 transitions, 517 flow [2025-02-06 18:50:30,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:30,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:30,767 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:30,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:50:30,767 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:50:30,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 593631755, now seen corresponding path program 1 times [2025-02-06 18:50:30,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:30,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107221977] [2025-02-06 18:50:30,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:30,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:30,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:50:30,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:50:30,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:30,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:30,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:30,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107221977] [2025-02-06 18:50:30,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107221977] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:30,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:30,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:50:30,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664559840] [2025-02-06 18:50:30,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:30,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:30,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:30,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:30,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:30,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:50:30,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 68 transitions, 517 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:30,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:30,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:50:30,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:31,205 INFO L124 PetriNetUnfolderBase]: 1601/2859 cut-off events. [2025-02-06 18:50:31,205 INFO L125 PetriNetUnfolderBase]: For 12140/12140 co-relation queries the response was YES. [2025-02-06 18:50:31,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10169 conditions, 2859 events. 1601/2859 cut-off events. For 12140/12140 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16206 event pairs, 91 based on Foata normal form. 123/2771 useless extension candidates. Maximal degree in co-relation 10153. Up to 1465 conditions per place. [2025-02-06 18:50:31,227 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 77 selfloop transitions, 15 changer transitions 0/102 dead transitions. [2025-02-06 18:50:31,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 102 transitions, 926 flow [2025-02-06 18:50:31,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-02-06 18:50:31,229 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-06 18:50:31,229 INFO L175 Difference]: Start difference. First operand has 47 places, 68 transitions, 517 flow. Second operand 4 states and 96 transitions. [2025-02-06 18:50:31,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 102 transitions, 926 flow [2025-02-06 18:50:31,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 102 transitions, 894 flow, removed 16 selfloop flow, removed 0 redundant places. [2025-02-06 18:50:31,246 INFO L231 Difference]: Finished difference. Result has 52 places, 78 transitions, 690 flow [2025-02-06 18:50:31,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=690, PETRI_PLACES=52, PETRI_TRANSITIONS=78} [2025-02-06 18:50:31,247 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2025-02-06 18:50:31,248 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 78 transitions, 690 flow [2025-02-06 18:50:31,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:31,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:31,248 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:31,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:50:31,249 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:50:31,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash 797422374, now seen corresponding path program 1 times [2025-02-06 18:50:31,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:31,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515798865] [2025-02-06 18:50:31,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:31,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:31,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:50:31,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:50:31,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:31,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:31,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515798865] [2025-02-06 18:50:31,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515798865] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382148623] [2025-02-06 18:50:31,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:31,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:31,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:31,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:31,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:50:31,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:50:31,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:50:31,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:31,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:31,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:31,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:31,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:31,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382148623] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:31,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:31,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2025-02-06 18:50:31,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058633819] [2025-02-06 18:50:31,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:31,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:50:31,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:31,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:50:31,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:50:31,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:50:31,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 78 transitions, 690 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:31,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:31,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:50:31,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:32,690 INFO L124 PetriNetUnfolderBase]: 5320/9620 cut-off events. [2025-02-06 18:50:32,690 INFO L125 PetriNetUnfolderBase]: For 65101/65101 co-relation queries the response was YES. [2025-02-06 18:50:32,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36115 conditions, 9620 events. 5320/9620 cut-off events. For 65101/65101 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 63698 event pairs, 278 based on Foata normal form. 683/9603 useless extension candidates. Maximal degree in co-relation 36095. Up to 3309 conditions per place. [2025-02-06 18:50:32,777 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 146 selfloop transitions, 113 changer transitions 0/269 dead transitions. [2025-02-06 18:50:32,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 269 transitions, 2825 flow [2025-02-06 18:50:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:50:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:50:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2025-02-06 18:50:32,779 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2025-02-06 18:50:32,779 INFO L175 Difference]: Start difference. First operand has 52 places, 78 transitions, 690 flow. Second operand 10 states and 268 transitions. [2025-02-06 18:50:32,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 269 transitions, 2825 flow [2025-02-06 18:50:32,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 269 transitions, 2820 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:32,828 INFO L231 Difference]: Finished difference. Result has 66 places, 175 transitions, 2444 flow [2025-02-06 18:50:32,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2444, PETRI_PLACES=66, PETRI_TRANSITIONS=175} [2025-02-06 18:50:32,831 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 31 predicate places. [2025-02-06 18:50:32,832 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 175 transitions, 2444 flow [2025-02-06 18:50:32,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:32,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:32,832 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:32,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:50:33,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:33,037 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:50:33,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2119971367, now seen corresponding path program 1 times [2025-02-06 18:50:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:33,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496199946] [2025-02-06 18:50:33,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:33,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:50:33,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:50:33,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:33,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496199946] [2025-02-06 18:50:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496199946] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:33,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:33,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:50:33,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048172325] [2025-02-06 18:50:33,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:33,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:50:33,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:33,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:50:33,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:50:33,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:50:33,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 175 transitions, 2444 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:33,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:33,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:50:33,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:34,574 INFO L124 PetriNetUnfolderBase]: 6595/11991 cut-off events. [2025-02-06 18:50:34,575 INFO L125 PetriNetUnfolderBase]: For 114145/114145 co-relation queries the response was YES. [2025-02-06 18:50:34,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51580 conditions, 11991 events. 6595/11991 cut-off events. For 114145/114145 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 83159 event pairs, 248 based on Foata normal form. 91/11272 useless extension candidates. Maximal degree in co-relation 51553. Up to 5685 conditions per place. [2025-02-06 18:50:34,666 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 163 selfloop transitions, 81 changer transitions 0/254 dead transitions. [2025-02-06 18:50:34,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 254 transitions, 3781 flow [2025-02-06 18:50:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:50:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:50:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2025-02-06 18:50:34,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2025-02-06 18:50:34,667 INFO L175 Difference]: Start difference. First operand has 66 places, 175 transitions, 2444 flow. Second operand 5 states and 119 transitions. [2025-02-06 18:50:34,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 254 transitions, 3781 flow [2025-02-06 18:50:34,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 254 transitions, 3655 flow, removed 50 selfloop flow, removed 2 redundant places. [2025-02-06 18:50:34,768 INFO L231 Difference]: Finished difference. Result has 71 places, 214 transitions, 3255 flow [2025-02-06 18:50:34,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3255, PETRI_PLACES=71, PETRI_TRANSITIONS=214} [2025-02-06 18:50:34,769 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2025-02-06 18:50:34,769 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 214 transitions, 3255 flow [2025-02-06 18:50:34,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:34,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:34,769 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:34,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:50:34,770 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:50:34,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:34,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1617369277, now seen corresponding path program 1 times [2025-02-06 18:50:34,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:34,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260029257] [2025-02-06 18:50:34,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:34,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:34,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:50:34,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:50:34,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:34,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:34,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:34,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260029257] [2025-02-06 18:50:34,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260029257] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:34,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484546422] [2025-02-06 18:50:34,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:34,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:34,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:34,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:34,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:50:34,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:50:34,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:50:34,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:34,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:34,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:34,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:34,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:34,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484546422] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:34,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:34,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-06 18:50:34,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429532753] [2025-02-06 18:50:34,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:34,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:50:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:34,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:50:34,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:50:34,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:50:34,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 214 transitions, 3255 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:34,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:34,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:50:34,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:38,988 INFO L124 PetriNetUnfolderBase]: 23067/42902 cut-off events. [2025-02-06 18:50:38,989 INFO L125 PetriNetUnfolderBase]: For 511361/511361 co-relation queries the response was YES. [2025-02-06 18:50:39,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180343 conditions, 42902 events. 23067/42902 cut-off events. For 511361/511361 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 360080 event pairs, 986 based on Foata normal form. 2468/42270 useless extension candidates. Maximal degree in co-relation 180312. Up to 13607 conditions per place. [2025-02-06 18:50:39,318 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 367 selfloop transitions, 470 changer transitions 0/847 dead transitions. [2025-02-06 18:50:39,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 847 transitions, 14247 flow [2025-02-06 18:50:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 18:50:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 18:50:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2025-02-06 18:50:39,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2025-02-06 18:50:39,320 INFO L175 Difference]: Start difference. First operand has 71 places, 214 transitions, 3255 flow. Second operand 9 states and 246 transitions. [2025-02-06 18:50:39,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 847 transitions, 14247 flow [2025-02-06 18:50:40,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 847 transitions, 14004 flow, removed 119 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:40,352 INFO L231 Difference]: Finished difference. Result has 84 places, 655 transitions, 12452 flow [2025-02-06 18:50:40,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12452, PETRI_PLACES=84, PETRI_TRANSITIONS=655} [2025-02-06 18:50:40,353 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 49 predicate places. [2025-02-06 18:50:40,353 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 655 transitions, 12452 flow [2025-02-06 18:50:40,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:40,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:40,354 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:40,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:50:40,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-06 18:50:40,554 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:50:40,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:40,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1194469047, now seen corresponding path program 1 times [2025-02-06 18:50:40,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:40,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640982616] [2025-02-06 18:50:40,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:40,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:40,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 18:50:40,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:50:40,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:40,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:40,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:40,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640982616] [2025-02-06 18:50:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640982616] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:40,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553061361] [2025-02-06 18:50:40,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:40,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:40,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:40,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:40,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:50:40,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 18:50:40,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:50:40,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:40,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:40,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 18:50:40,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:40,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:41,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553061361] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:41,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:41,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 18:50:41,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210443450] [2025-02-06 18:50:41,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:41,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 18:50:41,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:41,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 18:50:41,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2025-02-06 18:50:41,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:50:41,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 655 transitions, 12452 flow. Second operand has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:41,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:41,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:50:41,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:54,593 INFO L124 PetriNetUnfolderBase]: 52355/98932 cut-off events. [2025-02-06 18:50:54,594 INFO L125 PetriNetUnfolderBase]: For 1821741/1821741 co-relation queries the response was YES. [2025-02-06 18:50:55,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442664 conditions, 98932 events. 52355/98932 cut-off events. For 1821741/1821741 co-relation queries the response was YES. Maximal size of possible extension queue 1751. Compared 958785 event pairs, 3037 based on Foata normal form. 5248/95886 useless extension candidates. Maximal degree in co-relation 442626. Up to 30040 conditions per place. [2025-02-06 18:50:55,494 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 314 selfloop transitions, 1571 changer transitions 0/1895 dead transitions. [2025-02-06 18:50:55,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 1895 transitions, 37083 flow [2025-02-06 18:50:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:50:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:50:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 426 transitions. [2025-02-06 18:50:55,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7888888888888889 [2025-02-06 18:50:55,496 INFO L175 Difference]: Start difference. First operand has 84 places, 655 transitions, 12452 flow. Second operand 15 states and 426 transitions. [2025-02-06 18:50:55,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 1895 transitions, 37083 flow [2025-02-06 18:51:01,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 1895 transitions, 35930 flow, removed 574 selfloop flow, removed 1 redundant places. [2025-02-06 18:51:01,990 INFO L231 Difference]: Finished difference. Result has 109 places, 1793 transitions, 39135 flow [2025-02-06 18:51:01,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12033, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=39135, PETRI_PLACES=109, PETRI_TRANSITIONS=1793} [2025-02-06 18:51:01,991 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 74 predicate places. [2025-02-06 18:51:01,991 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 1793 transitions, 39135 flow [2025-02-06 18:51:01,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:51:01,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:01,992 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:01,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:51:02,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:02,192 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:51:02,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1387727028, now seen corresponding path program 2 times [2025-02-06 18:51:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:02,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427018880] [2025-02-06 18:51:02,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:51:02,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:02,200 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:51:02,203 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 32 statements. [2025-02-06 18:51:02,204 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:51:02,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 18:51:02,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:02,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427018880] [2025-02-06 18:51:02,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427018880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:02,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:02,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:51:02,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306490040] [2025-02-06 18:51:02,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:02,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:51:02,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:02,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:51:02,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:51:02,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-02-06 18:51:02,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 1793 transitions, 39135 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:51:02,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:02,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-02-06 18:51:02,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:30,802 INFO L124 PetriNetUnfolderBase]: 59495/113326 cut-off events. [2025-02-06 18:51:30,802 INFO L125 PetriNetUnfolderBase]: For 1648576/1650772 co-relation queries the response was YES. [2025-02-06 18:51:31,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518449 conditions, 113326 events. 59495/113326 cut-off events. For 1648576/1650772 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 1163200 event pairs, 15919 based on Foata normal form. 1749/108643 useless extension candidates. Maximal degree in co-relation 518398. Up to 65319 conditions per place. [2025-02-06 18:51:32,205 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 2359 selfloop transitions, 2 changer transitions 0/2370 dead transitions. [2025-02-06 18:51:32,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 2370 transitions, 56305 flow [2025-02-06 18:51:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:51:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:51:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2025-02-06 18:51:32,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-02-06 18:51:32,206 INFO L175 Difference]: Start difference. First operand has 109 places, 1793 transitions, 39135 flow. Second operand 3 states and 68 transitions. [2025-02-06 18:51:32,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 2370 transitions, 56305 flow [2025-02-06 18:51:50,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 2370 transitions, 48553 flow, removed 3868 selfloop flow, removed 5 redundant places. [2025-02-06 18:51:50,434 INFO L231 Difference]: Finished difference. Result has 106 places, 1706 transitions, 31552 flow [2025-02-06 18:51:50,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=31540, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31552, PETRI_PLACES=106, PETRI_TRANSITIONS=1706} [2025-02-06 18:51:50,436 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 71 predicate places. [2025-02-06 18:51:50,436 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 1706 transitions, 31552 flow [2025-02-06 18:51:50,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:51:50,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:50,436 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:50,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:51:50,436 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:51:50,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:50,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1212075733, now seen corresponding path program 2 times [2025-02-06 18:51:50,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:50,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266983196] [2025-02-06 18:51:50,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:51:50,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:50,445 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:51:50,464 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:51:50,465 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:51:50,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:50,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:50,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266983196] [2025-02-06 18:51:50,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266983196] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:50,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295468383] [2025-02-06 18:51:50,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:51:50,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:50,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:50,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:51:50,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:51:50,624 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:51:50,642 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:51:50,642 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:51:50,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:50,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 18:51:50,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:50,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:51:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295468383] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:51:50,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:51:50,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-02-06 18:51:50,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292955435] [2025-02-06 18:51:50,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:51:50,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 18:51:50,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:50,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 18:51:50,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-02-06 18:51:50,816 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-06 18:51:50,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 1706 transitions, 31552 flow. Second operand has 17 states, 17 states have (on average 14.176470588235293) internal successors, (241), 17 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:51:50,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:50,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-06 18:51:50,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand