./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.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/popl20-nonblocking-cntr-alt.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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:53:46,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:53:46,727 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:53:46,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:53:46,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:53:46,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:53:46,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:53:46,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:53:46,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:53:46,748 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:53:46,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:53:46,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:53:46,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:53:46,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:53:46,749 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:53:46,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:53:46,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:53:46,749 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:53:46,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:53:46,750 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:53:46,751 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:53:46,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:53:46,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:53:46,751 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 -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2025-02-06 18:53:46,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:53:46,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:53:46,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:53:46,980 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:53:46,980 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:53:46,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2025-02-06 18:53:48,159 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5eba8f911/abbf5746c99e4bfa9f4744caa1117ba2/FLAGb6d980588 [2025-02-06 18:53:48,373 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:53:48,375 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2025-02-06 18:53:48,394 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5eba8f911/abbf5746c99e4bfa9f4744caa1117ba2/FLAGb6d980588 [2025-02-06 18:53:48,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5eba8f911/abbf5746c99e4bfa9f4744caa1117ba2 [2025-02-06 18:53:48,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:53:48,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:53:48,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:53:48,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:53:48,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:53:48,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75254f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48, skipping insertion in model container [2025-02-06 18:53:48,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,757 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:53:48,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:53:48,901 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:53:48,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:53:48,933 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:53:48,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48 WrapperNode [2025-02-06 18:53:48,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:53:48,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:53:48,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:53:48,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:53:48,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,960 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2025-02-06 18:53:48,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:53:48,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:53:48,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:53:48,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:53:48,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,979 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 18:53:48,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,983 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:53:48,991 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:53:48,991 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:53:48,991 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:53:48,992 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (1/1) ... [2025-02-06 18:53:48,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:53:49,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:49,018 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 18:53:49,020 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 18:53:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:53:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:53:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:53:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:53:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:53:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:53:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:53:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:53:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:53:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:53:49,036 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 18:53:49,085 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:53:49,087 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:53:49,246 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:53:49,246 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:53:49,344 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:53:49,344 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:53:49,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:53:49 BoogieIcfgContainer [2025-02-06 18:53:49,344 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:53:49,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:53:49,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:53:49,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:53:49,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:53:48" (1/3) ... [2025-02-06 18:53:49,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38af8f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:53:49, skipping insertion in model container [2025-02-06 18:53:49,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:48" (2/3) ... [2025-02-06 18:53:49,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38af8f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:53:49, skipping insertion in model container [2025-02-06 18:53:49,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:53:49" (3/3) ... [2025-02-06 18:53:49,350 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2025-02-06 18:53:49,362 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:53:49,363 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr-alt.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2025-02-06 18:53:49,363 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:53:49,399 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:53:49,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2025-02-06 18:53:49,457 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-02-06 18:53:49,459 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:53:49,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 71 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-02-06 18:53:49,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2025-02-06 18:53:49,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 70 flow [2025-02-06 18:53:49,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:53:49,488 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;@4da943db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:53:49,489 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-06 18:53:49,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:53:49,496 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 18:53:49,497 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:53:49,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:49,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:53:49,499 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:49,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash 244157132, now seen corresponding path program 1 times [2025-02-06 18:53:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567688382] [2025-02-06 18:53:49,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:49,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:53:49,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:53:49,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:49,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:49,687 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 18:53:49,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:49,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567688382] [2025-02-06 18:53:49,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567688382] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:49,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:49,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:53:49,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273903433] [2025-02-06 18:53:49,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:49,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:53:49,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:49,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:53:49,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:53:49,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:49,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 18:53:49,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:49,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:49,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:49,863 INFO L124 PetriNetUnfolderBase]: 143/299 cut-off events. [2025-02-06 18:53:49,864 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-06 18:53:49,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 299 events. 143/299 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1252 event pairs, 49 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 514. Up to 192 conditions per place. [2025-02-06 18:53:49,867 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 27 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2025-02-06 18:53:49,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 155 flow [2025-02-06 18:53:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:53:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:53:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2025-02-06 18:53:49,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2025-02-06 18:53:49,890 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 70 flow. Second operand 3 states and 69 transitions. [2025-02-06 18:53:49,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 155 flow [2025-02-06 18:53:49,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:53:49,899 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 80 flow [2025-02-06 18:53:49,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2025-02-06 18:53:49,910 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2025-02-06 18:53:49,911 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 80 flow [2025-02-06 18:53:49,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 18:53:49,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:49,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:49,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:53:49,912 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:49,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1588187952, now seen corresponding path program 1 times [2025-02-06 18:53:49,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:49,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580860978] [2025-02-06 18:53:49,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:49,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:49,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:53:49,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:53:49,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:49,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:49,978 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 18:53:49,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580860978] [2025-02-06 18:53:49,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580860978] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:49,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:49,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:53:49,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942969026] [2025-02-06 18:53:49,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:49,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:49,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:49,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:49,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:49,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:53:49,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:53:49,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:49,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:53:49,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:50,161 INFO L124 PetriNetUnfolderBase]: 243/471 cut-off events. [2025-02-06 18:53:50,162 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-02-06 18:53:50,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 471 events. 243/471 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2245 event pairs, 111 based on Foata normal form. 14/388 useless extension candidates. Maximal degree in co-relation 528. Up to 339 conditions per place. [2025-02-06 18:53:50,167 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 40 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2025-02-06 18:53:50,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 224 flow [2025-02-06 18:53:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-06 18:53:50,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-02-06 18:53:50,169 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 80 flow. Second operand 4 states and 78 transitions. [2025-02-06 18:53:50,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 224 flow [2025-02-06 18:53:50,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:50,171 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 107 flow [2025-02-06 18:53:50,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2025-02-06 18:53:50,173 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2025-02-06 18:53:50,173 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 107 flow [2025-02-06 18:53:50,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:53:50,173 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:50,173 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:50,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:53:50,173 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:50,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:50,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1243288214, now seen corresponding path program 1 times [2025-02-06 18:53:50,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:50,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679890270] [2025-02-06 18:53:50,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:50,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:50,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:53:50,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:53:50,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:50,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:50,236 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 18:53:50,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679890270] [2025-02-06 18:53:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679890270] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:50,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:50,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:53:50,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188498206] [2025-02-06 18:53:50,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:50,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:53:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:50,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:53:50,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:53:50,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:50,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 107 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 18:53:50,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:50,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:50,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:50,301 INFO L124 PetriNetUnfolderBase]: 144/281 cut-off events. [2025-02-06 18:53:50,301 INFO L125 PetriNetUnfolderBase]: For 96/115 co-relation queries the response was YES. [2025-02-06 18:53:50,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 281 events. 144/281 cut-off events. For 96/115 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1200 event pairs, 112 based on Foata normal form. 7/228 useless extension candidates. Maximal degree in co-relation 389. Up to 251 conditions per place. [2025-02-06 18:53:50,304 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 20 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2025-02-06 18:53:50,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 145 flow [2025-02-06 18:53:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:53:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:53:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-02-06 18:53:50,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-02-06 18:53:50,306 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 107 flow. Second operand 3 states and 52 transitions. [2025-02-06 18:53:50,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 145 flow [2025-02-06 18:53:50,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:50,307 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 102 flow [2025-02-06 18:53:50,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2025-02-06 18:53:50,307 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2025-02-06 18:53:50,307 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 102 flow [2025-02-06 18:53:50,307 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 18:53:50,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:50,308 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:50,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:53:50,308 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:50,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:50,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2094594759, now seen corresponding path program 1 times [2025-02-06 18:53:50,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:50,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482427878] [2025-02-06 18:53:50,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:50,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:50,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:53:50,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:53:50,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:50,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:50,360 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 18:53:50,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:50,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482427878] [2025-02-06 18:53:50,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482427878] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:50,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:50,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:53:50,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027514365] [2025-02-06 18:53:50,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:50,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:53:50,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:50,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:53:50,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:53:50,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:50,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 102 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 18:53:50,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:50,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:50,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:50,432 INFO L124 PetriNetUnfolderBase]: 202/399 cut-off events. [2025-02-06 18:53:50,432 INFO L125 PetriNetUnfolderBase]: For 127/164 co-relation queries the response was YES. [2025-02-06 18:53:50,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 399 events. 202/399 cut-off events. For 127/164 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1921 event pairs, 112 based on Foata normal form. 26/357 useless extension candidates. Maximal degree in co-relation 921. Up to 252 conditions per place. [2025-02-06 18:53:50,435 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 33 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2025-02-06 18:53:50,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 220 flow [2025-02-06 18:53:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:53:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:53:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2025-02-06 18:53:50,437 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-06 18:53:50,437 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 102 flow. Second operand 3 states and 64 transitions. [2025-02-06 18:53:50,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 220 flow [2025-02-06 18:53:50,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:50,439 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 115 flow [2025-02-06 18:53:50,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2025-02-06 18:53:50,440 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2025-02-06 18:53:50,440 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 115 flow [2025-02-06 18:53:50,441 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 18:53:50,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:50,441 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:50,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:53:50,441 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:50,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash -347337053, now seen corresponding path program 1 times [2025-02-06 18:53:50,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:50,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781828668] [2025-02-06 18:53:50,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:50,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:50,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:53:50,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:53:50,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:50,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:50,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781828668] [2025-02-06 18:53:50,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781828668] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:50,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:50,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:53:50,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746668345] [2025-02-06 18:53:50,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:50,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:53:50,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:50,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:53:50,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:53:50,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:50,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 115 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 18:53:50,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:50,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:50,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:50,548 INFO L124 PetriNetUnfolderBase]: 179/346 cut-off events. [2025-02-06 18:53:50,548 INFO L125 PetriNetUnfolderBase]: For 207/244 co-relation queries the response was YES. [2025-02-06 18:53:50,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 346 events. 179/346 cut-off events. For 207/244 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1546 event pairs, 145 based on Foata normal form. 13/304 useless extension candidates. Maximal degree in co-relation 902. Up to 312 conditions per place. [2025-02-06 18:53:50,549 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 20 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2025-02-06 18:53:50,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 153 flow [2025-02-06 18:53:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:53:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:53:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2025-02-06 18:53:50,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-02-06 18:53:50,551 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 115 flow. Second operand 3 states and 51 transitions. [2025-02-06 18:53:50,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 153 flow [2025-02-06 18:53:50,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:50,553 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 111 flow [2025-02-06 18:53:50,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2025-02-06 18:53:50,554 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2025-02-06 18:53:50,554 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 111 flow [2025-02-06 18:53:50,554 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 18:53:50,554 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:50,554 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:50,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:53:50,554 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:50,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash -347337052, now seen corresponding path program 1 times [2025-02-06 18:53:50,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826731126] [2025-02-06 18:53:50,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:50,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:53:50,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:53:50,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:50,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:50,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:50,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826731126] [2025-02-06 18:53:50,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826731126] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:50,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634054438] [2025-02-06 18:53:50,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:50,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:50,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:50,615 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 18:53:50,616 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 18:53:50,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:53:50,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:53:50,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:50,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:50,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:53:50,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:50,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634054438] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:50,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:50,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-02-06 18:53:50,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886801617] [2025-02-06 18:53:50,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:50,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 18:53:50,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:50,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 18:53:50,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:53:50,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:50,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 111 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:50,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:50,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:50,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:50,925 INFO L124 PetriNetUnfolderBase]: 428/1096 cut-off events. [2025-02-06 18:53:50,925 INFO L125 PetriNetUnfolderBase]: For 434/444 co-relation queries the response was YES. [2025-02-06 18:53:50,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 1096 events. 428/1096 cut-off events. For 434/444 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6444 event pairs, 56 based on Foata normal form. 17/1045 useless extension candidates. Maximal degree in co-relation 2572. Up to 189 conditions per place. [2025-02-06 18:53:50,929 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 70 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2025-02-06 18:53:50,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 95 transitions, 507 flow [2025-02-06 18:53:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:53:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:53:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2025-02-06 18:53:50,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2025-02-06 18:53:50,930 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 111 flow. Second operand 7 states and 159 transitions. [2025-02-06 18:53:50,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 95 transitions, 507 flow [2025-02-06 18:53:50,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 95 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:50,932 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 260 flow [2025-02-06 18:53:50,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2025-02-06 18:53:50,933 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2025-02-06 18:53:50,933 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 260 flow [2025-02-06 18:53:50,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:50,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:50,933 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:50,942 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 18:53:51,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:51,137 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:51,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:51,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2078500611, now seen corresponding path program 1 times [2025-02-06 18:53:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81816352] [2025-02-06 18:53:51,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:51,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:53:51,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:53:51,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:51,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:51,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:51,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81816352] [2025-02-06 18:53:51,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81816352] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:51,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349067913] [2025-02-06 18:53:51,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:51,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:51,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:51,220 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 18:53:51,221 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 18:53:51,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:53:51,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:53:51,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:51,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:51,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:53:51,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:51,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:51,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349067913] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:51,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:53:51,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2025-02-06 18:53:51,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278967437] [2025-02-06 18:53:51,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:51,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:51,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:51,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:51,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:53:51,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:51,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:51,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:51,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:51,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:51,459 INFO L124 PetriNetUnfolderBase]: 380/857 cut-off events. [2025-02-06 18:53:51,459 INFO L125 PetriNetUnfolderBase]: For 1526/1587 co-relation queries the response was YES. [2025-02-06 18:53:51,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 857 events. 380/857 cut-off events. For 1526/1587 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4564 event pairs, 71 based on Foata normal form. 11/839 useless extension candidates. Maximal degree in co-relation 2487. Up to 552 conditions per place. [2025-02-06 18:53:51,465 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 44 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2025-02-06 18:53:51,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 411 flow [2025-02-06 18:53:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-02-06 18:53:51,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-06 18:53:51,466 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 260 flow. Second operand 4 states and 72 transitions. [2025-02-06 18:53:51,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 411 flow [2025-02-06 18:53:51,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 397 flow, removed 7 selfloop flow, removed 0 redundant places. [2025-02-06 18:53:51,470 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 257 flow [2025-02-06 18:53:51,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2025-02-06 18:53:51,471 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2025-02-06 18:53:51,471 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 257 flow [2025-02-06 18:53:51,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:51,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:51,472 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:51,481 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 18:53:51,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:51,676 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:51,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2078500612, now seen corresponding path program 1 times [2025-02-06 18:53:51,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:51,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646934970] [2025-02-06 18:53:51,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:51,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:51,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:53:51,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:53:51,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:51,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:51,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:51,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646934970] [2025-02-06 18:53:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646934970] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:51,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426391013] [2025-02-06 18:53:51,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:51,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:51,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:51,752 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 18:53:51,758 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 18:53:51,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:53:51,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:53:51,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:51,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:51,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:53:51,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:53:51,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:53:51,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426391013] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:51,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:53:51,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2025-02-06 18:53:51,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728836278] [2025-02-06 18:53:51,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:51,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:51,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:51,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:51,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:53:51,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-02-06 18:53:51,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:53:51,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:51,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-02-06 18:53:51,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:51,954 INFO L124 PetriNetUnfolderBase]: 453/882 cut-off events. [2025-02-06 18:53:51,955 INFO L125 PetriNetUnfolderBase]: For 1465/1546 co-relation queries the response was YES. [2025-02-06 18:53:51,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2638 conditions, 882 events. 453/882 cut-off events. For 1465/1546 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4407 event pairs, 156 based on Foata normal form. 38/806 useless extension candidates. Maximal degree in co-relation 2618. Up to 397 conditions per place. [2025-02-06 18:53:51,961 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2025-02-06 18:53:51,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 404 flow [2025-02-06 18:53:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2025-02-06 18:53:51,962 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2025-02-06 18:53:51,963 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 257 flow. Second operand 4 states and 67 transitions. [2025-02-06 18:53:51,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 404 flow [2025-02-06 18:53:51,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 386 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-06 18:53:51,969 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 243 flow [2025-02-06 18:53:51,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2025-02-06 18:53:51,970 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2025-02-06 18:53:51,971 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 243 flow [2025-02-06 18:53:51,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:53:51,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:51,971 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:51,979 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 18:53:52,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:52,176 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:52,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:52,176 INFO L85 PathProgramCache]: Analyzing trace with hash -711372456, now seen corresponding path program 1 times [2025-02-06 18:53:52,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:52,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059293028] [2025-02-06 18:53:52,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:52,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:52,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:53:52,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:53:52,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:52,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:52,265 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 18:53:52,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:52,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059293028] [2025-02-06 18:53:52,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059293028] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:52,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:52,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:53:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509825843] [2025-02-06 18:53:52,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:52,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:52,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:52,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:52,290 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:52,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 243 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 18:53:52,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:52,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:52,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:52,379 INFO L124 PetriNetUnfolderBase]: 309/686 cut-off events. [2025-02-06 18:53:52,380 INFO L125 PetriNetUnfolderBase]: For 1698/1744 co-relation queries the response was YES. [2025-02-06 18:53:52,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 686 events. 309/686 cut-off events. For 1698/1744 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3340 event pairs, 180 based on Foata normal form. 16/674 useless extension candidates. Maximal degree in co-relation 2168. Up to 479 conditions per place. [2025-02-06 18:53:52,383 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 35 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2025-02-06 18:53:52,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 380 flow [2025-02-06 18:53:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-02-06 18:53:52,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-02-06 18:53:52,385 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 243 flow. Second operand 4 states and 68 transitions. [2025-02-06 18:53:52,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 380 flow [2025-02-06 18:53:52,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:53:52,387 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 235 flow [2025-02-06 18:53:52,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2025-02-06 18:53:52,388 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2025-02-06 18:53:52,388 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 235 flow [2025-02-06 18:53:52,388 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 18:53:52,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:52,388 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:52,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:53:52,389 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:52,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:52,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1216550631, now seen corresponding path program 1 times [2025-02-06 18:53:52,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:52,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410307181] [2025-02-06 18:53:52,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:52,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:52,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:53:52,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:53:52,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:52,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:52,438 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 18:53:52,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:52,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410307181] [2025-02-06 18:53:52,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410307181] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:52,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551688776] [2025-02-06 18:53:52,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:52,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:52,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:52,441 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 18:53:52,442 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 18:53:52,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:53:52,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:53:52,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:52,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:52,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:53:52,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:52,510 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:53:52,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551688776] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:52,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:53:52,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:53:52,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259113249] [2025-02-06 18:53:52,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:52,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:53:52,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:52,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:53:52,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:53:52,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:53:52,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 18:53:52,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:52,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:53:52,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:52,653 INFO L124 PetriNetUnfolderBase]: 458/967 cut-off events. [2025-02-06 18:53:52,654 INFO L125 PetriNetUnfolderBase]: For 1937/1973 co-relation queries the response was YES. [2025-02-06 18:53:52,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2989 conditions, 967 events. 458/967 cut-off events. For 1937/1973 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4603 event pairs, 77 based on Foata normal form. 44/958 useless extension candidates. Maximal degree in co-relation 2967. Up to 281 conditions per place. [2025-02-06 18:53:52,658 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 64 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2025-02-06 18:53:52,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 631 flow [2025-02-06 18:53:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:53:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:53:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2025-02-06 18:53:52,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.484375 [2025-02-06 18:53:52,659 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 235 flow. Second operand 6 states and 93 transitions. [2025-02-06 18:53:52,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 631 flow [2025-02-06 18:53:52,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 625 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:53:52,662 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 237 flow [2025-02-06 18:53:52,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2025-02-06 18:53:52,662 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2025-02-06 18:53:52,662 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 237 flow [2025-02-06 18:53:52,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 18:53:52,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:52,663 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:53:52,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 18:53:52,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 18:53:52,864 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:52,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash -941635895, now seen corresponding path program 1 times [2025-02-06 18:53:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:52,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171292672] [2025-02-06 18:53:52,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:52,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:53:52,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:53:52,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:52,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:52,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:52,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171292672] [2025-02-06 18:53:52,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171292672] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:52,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650130378] [2025-02-06 18:53:52,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:52,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:52,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:52,904 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 18:53:52,906 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 18:53:52,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:53:52,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:53:52,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:52,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:52,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:53:52,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:52,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:53,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:53,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650130378] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:53,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:53,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:53:53,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452294153] [2025-02-06 18:53:53,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:53,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:53:53,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:53,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:53:53,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:53:53,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:53:53,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 237 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:53,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:53,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:53:53,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:53,262 INFO L124 PetriNetUnfolderBase]: 692/1417 cut-off events. [2025-02-06 18:53:53,262 INFO L125 PetriNetUnfolderBase]: For 3108/3144 co-relation queries the response was YES. [2025-02-06 18:53:53,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4588 conditions, 1417 events. 692/1417 cut-off events. For 3108/3144 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6975 event pairs, 207 based on Foata normal form. 72/1478 useless extension candidates. Maximal degree in co-relation 4567. Up to 571 conditions per place. [2025-02-06 18:53:53,269 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 110 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2025-02-06 18:53:53,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 129 transitions, 1068 flow [2025-02-06 18:53:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:53:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:53:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2025-02-06 18:53:53,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.509375 [2025-02-06 18:53:53,272 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 237 flow. Second operand 10 states and 163 transitions. [2025-02-06 18:53:53,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 129 transitions, 1068 flow [2025-02-06 18:53:53,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 129 transitions, 1041 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-02-06 18:53:53,276 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 306 flow [2025-02-06 18:53:53,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=306, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2025-02-06 18:53:53,276 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2025-02-06 18:53:53,276 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 306 flow [2025-02-06 18:53:53,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:53,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:53,277 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:53,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:53:53,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 18:53:53,478 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:53,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:53,478 INFO L85 PathProgramCache]: Analyzing trace with hash -870952057, now seen corresponding path program 1 times [2025-02-06 18:53:53,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:53,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820403588] [2025-02-06 18:53:53,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:53,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:53,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:53:53,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:53:53,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:53,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:53:53,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:53,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820403588] [2025-02-06 18:53:53,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820403588] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:53,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:53,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:53:53,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32246850] [2025-02-06 18:53:53,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:53,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:53,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:53,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:53,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:53,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:53,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 18:53:53,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:53,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:53,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:53,601 INFO L124 PetriNetUnfolderBase]: 430/941 cut-off events. [2025-02-06 18:53:53,602 INFO L125 PetriNetUnfolderBase]: For 2328/2348 co-relation queries the response was YES. [2025-02-06 18:53:53,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 941 events. 430/941 cut-off events. For 2328/2348 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4635 event pairs, 228 based on Foata normal form. 36/954 useless extension candidates. Maximal degree in co-relation 3271. Up to 626 conditions per place. [2025-02-06 18:53:53,606 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 47 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2025-02-06 18:53:53,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 527 flow [2025-02-06 18:53:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:53,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-02-06 18:53:53,607 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-02-06 18:53:53,608 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 306 flow. Second operand 4 states and 68 transitions. [2025-02-06 18:53:53,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 527 flow [2025-02-06 18:53:53,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 509 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-06 18:53:53,611 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 315 flow [2025-02-06 18:53:53,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2025-02-06 18:53:53,612 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2025-02-06 18:53:53,612 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 315 flow [2025-02-06 18:53:53,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 18:53:53,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:53,612 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:53,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:53:53,613 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:53,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:53,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1063217255, now seen corresponding path program 1 times [2025-02-06 18:53:53,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:53,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054757346] [2025-02-06 18:53:53,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:53,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:53,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:53:53,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:53:53,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:53,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:53:53,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:53,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054757346] [2025-02-06 18:53:53,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054757346] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:53,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:53,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:53:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969602721] [2025-02-06 18:53:53,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:53,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:53:53,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:53,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:53:53,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:53:53,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:53:53,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:53,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:53,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:53:53,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:53,722 INFO L124 PetriNetUnfolderBase]: 430/899 cut-off events. [2025-02-06 18:53:53,722 INFO L125 PetriNetUnfolderBase]: For 2736/2768 co-relation queries the response was YES. [2025-02-06 18:53:53,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3343 conditions, 899 events. 430/899 cut-off events. For 2736/2768 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4279 event pairs, 280 based on Foata normal form. 5/865 useless extension candidates. Maximal degree in co-relation 3317. Up to 721 conditions per place. [2025-02-06 18:53:53,727 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 35 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2025-02-06 18:53:53,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 47 transitions, 385 flow [2025-02-06 18:53:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:53:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:53:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-02-06 18:53:53,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-06 18:53:53,728 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 315 flow. Second operand 3 states and 44 transitions. [2025-02-06 18:53:53,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 47 transitions, 385 flow [2025-02-06 18:53:53,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 47 transitions, 373 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:53:53,731 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 303 flow [2025-02-06 18:53:53,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2025-02-06 18:53:53,732 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2025-02-06 18:53:53,732 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 303 flow [2025-02-06 18:53:53,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:53,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:53,732 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:53,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:53:53,732 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:53,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash -419676015, now seen corresponding path program 1 times [2025-02-06 18:53:53,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:53,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916315262] [2025-02-06 18:53:53,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:53,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:53,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:53:53,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:53:53,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:53,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:53:53,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:53,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916315262] [2025-02-06 18:53:53,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916315262] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:53,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:53,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:53:53,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364747598] [2025-02-06 18:53:53,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:53,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:53:53,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:53,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:53:53,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:53:53,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:53:53,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:53,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:53,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:53:53,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:53,827 INFO L124 PetriNetUnfolderBase]: 430/894 cut-off events. [2025-02-06 18:53:53,827 INFO L125 PetriNetUnfolderBase]: For 2407/2439 co-relation queries the response was YES. [2025-02-06 18:53:53,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3259 conditions, 894 events. 430/894 cut-off events. For 2407/2439 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4254 event pairs, 280 based on Foata normal form. 5/860 useless extension candidates. Maximal degree in co-relation 3233. Up to 716 conditions per place. [2025-02-06 18:53:53,832 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 28 selfloop transitions, 1 changer transitions 7/46 dead transitions. [2025-02-06 18:53:53,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 46 transitions, 371 flow [2025-02-06 18:53:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:53:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:53:53,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2025-02-06 18:53:53,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2025-02-06 18:53:53,833 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 303 flow. Second operand 3 states and 43 transitions. [2025-02-06 18:53:53,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 46 transitions, 371 flow [2025-02-06 18:53:53,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:53,837 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 274 flow [2025-02-06 18:53:53,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2025-02-06 18:53:53,838 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2025-02-06 18:53:53,838 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 274 flow [2025-02-06 18:53:53,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:53,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:53,838 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2025-02-06 18:53:53,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:53:53,838 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:53,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1331605389, now seen corresponding path program 2 times [2025-02-06 18:53:53,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:53,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205828609] [2025-02-06 18:53:53,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:53,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:53,843 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-06 18:53:53,846 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:53:53,846 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:53:53,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:53,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:53,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205828609] [2025-02-06 18:53:53,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205828609] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:53,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807386344] [2025-02-06 18:53:53,921 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:53,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:53,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:53,923 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 18:53:53,925 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 18:53:53,957 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-06 18:53:53,967 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:53:53,967 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:53:53,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:53,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:53:53,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:54,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:54,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807386344] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:54,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:54,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:53:54,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732950028] [2025-02-06 18:53:54,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:54,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 18:53:54,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:54,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 18:53:54,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 18:53:54,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:54,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 274 flow. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 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 18:53:54,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:54,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:54,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:54,358 INFO L124 PetriNetUnfolderBase]: 690/1780 cut-off events. [2025-02-06 18:53:54,359 INFO L125 PetriNetUnfolderBase]: For 6408/6492 co-relation queries the response was YES. [2025-02-06 18:53:54,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6224 conditions, 1780 events. 690/1780 cut-off events. For 6408/6492 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10405 event pairs, 25 based on Foata normal form. 76/1837 useless extension candidates. Maximal degree in co-relation 6197. Up to 262 conditions per place. [2025-02-06 18:53:54,368 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 96 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2025-02-06 18:53:54,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 146 transitions, 1231 flow [2025-02-06 18:53:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:53:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:53:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 249 transitions. [2025-02-06 18:53:54,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5985576923076923 [2025-02-06 18:53:54,369 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 274 flow. Second operand 13 states and 249 transitions. [2025-02-06 18:53:54,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 146 transitions, 1231 flow [2025-02-06 18:53:54,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 146 transitions, 1230 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:54,374 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 777 flow [2025-02-06 18:53:54,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=777, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2025-02-06 18:53:54,374 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2025-02-06 18:53:54,375 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 777 flow [2025-02-06 18:53:54,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 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 18:53:54,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:54,375 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2025-02-06 18:53:54,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 18:53:54,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 18:53:54,579 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:54,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1538462016, now seen corresponding path program 2 times [2025-02-06 18:53:54,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:54,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653334988] [2025-02-06 18:53:54,580 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:54,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:54,583 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:53:54,585 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-02-06 18:53:54,585 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:53:54,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-06 18:53:54,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:54,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653334988] [2025-02-06 18:53:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653334988] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:54,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900405061] [2025-02-06 18:53:54,602 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:54,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:54,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:54,606 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:54,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:53:54,631 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:53:54,635 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-02-06 18:53:54,636 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:53:54,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:54,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:53:54,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-06 18:53:54,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-06 18:53:54,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900405061] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:54,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:54,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 18:53:54,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103178627] [2025-02-06 18:53:54,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:54,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:53:54,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:54,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:53:54,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:53:54,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-06 18:53:54,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 777 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:54,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:54,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-06 18:53:54,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:54,923 INFO L124 PetriNetUnfolderBase]: 1350/2576 cut-off events. [2025-02-06 18:53:54,923 INFO L125 PetriNetUnfolderBase]: For 13303/13386 co-relation queries the response was YES. [2025-02-06 18:53:54,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10390 conditions, 2576 events. 1350/2576 cut-off events. For 13303/13386 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12649 event pairs, 199 based on Foata normal form. 112/2685 useless extension candidates. Maximal degree in co-relation 10352. Up to 1123 conditions per place. [2025-02-06 18:53:54,938 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 120 selfloop transitions, 13 changer transitions 0/136 dead transitions. [2025-02-06 18:53:54,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 136 transitions, 1806 flow [2025-02-06 18:53:54,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:53:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:53:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2025-02-06 18:53:54,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39375 [2025-02-06 18:53:54,939 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 777 flow. Second operand 5 states and 63 transitions. [2025-02-06 18:53:54,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 136 transitions, 1806 flow [2025-02-06 18:53:54,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 136 transitions, 1555 flow, removed 117 selfloop flow, removed 6 redundant places. [2025-02-06 18:53:54,954 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 686 flow [2025-02-06 18:53:54,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=686, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2025-02-06 18:53:54,954 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2025-02-06 18:53:54,955 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 686 flow [2025-02-06 18:53:54,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:54,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:54,955 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2025-02-06 18:53:54,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:53:55,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:55,159 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:55,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:55,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2064900781, now seen corresponding path program 3 times [2025-02-06 18:53:55,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:55,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140469031] [2025-02-06 18:53:55,160 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:53:55,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:55,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 11 equivalence classes. [2025-02-06 18:53:55,178 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 18:53:55,179 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 18:53:55,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:55,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:55,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140469031] [2025-02-06 18:53:55,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140469031] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:55,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836222075] [2025-02-06 18:53:55,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:53:55,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:55,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:55,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:55,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 18:53:55,341 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 11 equivalence classes. [2025-02-06 18:53:55,370 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 18:53:55,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 18:53:55,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:55,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 18:53:55,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:55,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836222075] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:55,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:55,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-06 18:53:55,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225587422] [2025-02-06 18:53:55,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:55,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 18:53:55,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:55,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 18:53:55,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-06 18:53:55,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:55,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 686 flow. Second operand has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 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 18:53:55,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:55,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:55,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:56,280 INFO L124 PetriNetUnfolderBase]: 1446/3663 cut-off events. [2025-02-06 18:53:56,280 INFO L125 PetriNetUnfolderBase]: For 31347/31503 co-relation queries the response was YES. [2025-02-06 18:53:56,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13883 conditions, 3663 events. 1446/3663 cut-off events. For 31347/31503 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 20541 event pairs, 27 based on Foata normal form. 160/3802 useless extension candidates. Maximal degree in co-relation 13848. Up to 729 conditions per place. [2025-02-06 18:53:56,311 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 170 selfloop transitions, 144 changer transitions 0/324 dead transitions. [2025-02-06 18:53:56,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 324 transitions, 3050 flow [2025-02-06 18:53:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 18:53:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 18:53:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 489 transitions. [2025-02-06 18:53:56,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.61125 [2025-02-06 18:53:56,314 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 686 flow. Second operand 25 states and 489 transitions. [2025-02-06 18:53:56,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 324 transitions, 3050 flow [2025-02-06 18:53:56,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 324 transitions, 3000 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:53:56,335 INFO L231 Difference]: Finished difference. Result has 121 places, 180 transitions, 2259 flow [2025-02-06 18:53:56,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2259, PETRI_PLACES=121, PETRI_TRANSITIONS=180} [2025-02-06 18:53:56,337 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 87 predicate places. [2025-02-06 18:53:56,337 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 180 transitions, 2259 flow [2025-02-06 18:53:56,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 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 18:53:56,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:56,337 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2025-02-06 18:53:56,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 18:53:56,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 18:53:56,538 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:56,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash -588668691, now seen corresponding path program 4 times [2025-02-06 18:53:56,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:56,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558569624] [2025-02-06 18:53:56,539 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:53:56,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:56,547 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 115 statements into 2 equivalence classes. [2025-02-06 18:53:56,574 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-02-06 18:53:56,574 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:53:56,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:57,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:57,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558569624] [2025-02-06 18:53:57,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558569624] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:57,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005611734] [2025-02-06 18:53:57,079 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:53:57,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:57,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:57,083 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:57,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:53:57,118 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 115 statements into 2 equivalence classes. [2025-02-06 18:53:57,145 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-02-06 18:53:57,145 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:53:57,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:57,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 18:53:57,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:57,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:57,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005611734] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:57,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:57,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2025-02-06 18:53:57,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778443973] [2025-02-06 18:53:57,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:57,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-06 18:53:57,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:57,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-06 18:53:57,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-06 18:53:57,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:53:57,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 180 transitions, 2259 flow. Second operand has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 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 18:53:57,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:57,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:53:57,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:00,242 INFO L124 PetriNetUnfolderBase]: 3834/9929 cut-off events. [2025-02-06 18:54:00,242 INFO L125 PetriNetUnfolderBase]: For 241181/241519 co-relation queries the response was YES. [2025-02-06 18:54:00,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39192 conditions, 9929 events. 3834/9929 cut-off events. For 241181/241519 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 61530 event pairs, 53 based on Foata normal form. 328/10234 useless extension candidates. Maximal degree in co-relation 39134. Up to 2263 conditions per place. [2025-02-06 18:54:00,366 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 316 selfloop transitions, 500 changer transitions 0/826 dead transitions. [2025-02-06 18:54:00,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 826 transitions, 9887 flow [2025-02-06 18:54:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-06 18:54:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-02-06 18:54:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 969 transitions. [2025-02-06 18:54:00,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6179846938775511 [2025-02-06 18:54:00,370 INFO L175 Difference]: Start difference. First operand has 121 places, 180 transitions, 2259 flow. Second operand 49 states and 969 transitions. [2025-02-06 18:54:00,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 826 transitions, 9887 flow [2025-02-06 18:54:00,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 826 transitions, 8136 flow, removed 852 selfloop flow, removed 5 redundant places. [2025-02-06 18:54:00,469 INFO L231 Difference]: Finished difference. Result has 210 places, 538 transitions, 7143 flow [2025-02-06 18:54:00,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7143, PETRI_PLACES=210, PETRI_TRANSITIONS=538} [2025-02-06 18:54:00,471 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 176 predicate places. [2025-02-06 18:54:00,471 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 538 transitions, 7143 flow [2025-02-06 18:54:00,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 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 18:54:00,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:00,471 INFO L206 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2025-02-06 18:54:00,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:00,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 18:54:00,676 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:54:00,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash 389709165, now seen corresponding path program 5 times [2025-02-06 18:54:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:00,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938815481] [2025-02-06 18:54:00,677 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:54:00,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:00,688 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 235 statements into 47 equivalence classes. [2025-02-06 18:54:00,767 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 235 of 235 statements. [2025-02-06 18:54:00,767 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-02-06 18:54:00,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:02,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:02,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938815481] [2025-02-06 18:54:02,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938815481] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:02,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266625494] [2025-02-06 18:54:02,524 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:54:02,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:02,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:02,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:02,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 18:54:02,571 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 235 statements into 47 equivalence classes. [2025-02-06 18:54:02,646 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 235 of 235 statements. [2025-02-06 18:54:02,646 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-02-06 18:54:02,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:02,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-06 18:54:02,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:02,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:05,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266625494] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:05,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:05,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2025-02-06 18:54:05,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186157658] [2025-02-06 18:54:05,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:05,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-06 18:54:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:05,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-06 18:54:05,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-06 18:54:05,246 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:54:05,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 538 transitions, 7143 flow. Second operand has 96 states, 96 states have (on average 13.0) internal successors, (1248), 96 states have internal predecessors, (1248), 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 18:54:05,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:05,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:54:05,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:16,232 INFO L124 PetriNetUnfolderBase]: 12078/31759 cut-off events. [2025-02-06 18:54:16,232 INFO L125 PetriNetUnfolderBase]: For 1884799/1885509 co-relation queries the response was YES. [2025-02-06 18:54:16,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124717 conditions, 31759 events. 12078/31759 cut-off events. For 1884799/1885509 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 229601 event pairs, 173 based on Foata normal form. 664/32418 useless extension candidates. Maximal degree in co-relation 124616. Up to 7649 conditions per place. [2025-02-06 18:54:16,693 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 604 selfloop transitions, 1792 changer transitions 0/2406 dead transitions. [2025-02-06 18:54:16,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 2406 transitions, 31401 flow [2025-02-06 18:54:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-06 18:54:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2025-02-06 18:54:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1914 transitions. [2025-02-06 18:54:16,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.623046875 [2025-02-06 18:54:16,697 INFO L175 Difference]: Start difference. First operand has 210 places, 538 transitions, 7143 flow. Second operand 96 states and 1914 transitions. [2025-02-06 18:54:16,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 2406 transitions, 31401 flow [2025-02-06 18:54:17,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 2406 transitions, 24882 flow, removed 3150 selfloop flow, removed 11 redundant places. [2025-02-06 18:54:17,576 INFO L231 Difference]: Finished difference. Result has 388 places, 1832 transitions, 24561 flow [2025-02-06 18:54:17,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6386, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=24561, PETRI_PLACES=388, PETRI_TRANSITIONS=1832} [2025-02-06 18:54:17,577 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 354 predicate places. [2025-02-06 18:54:17,577 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 1832 transitions, 24561 flow [2025-02-06 18:54:17,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 13.0) internal successors, (1248), 96 states have internal predecessors, (1248), 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 18:54:17,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:17,578 INFO L206 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2025-02-06 18:54:17,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 18:54:17,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:17,782 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:54:17,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:17,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1378989677, now seen corresponding path program 6 times [2025-02-06 18:54:17,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:17,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230437515] [2025-02-06 18:54:17,785 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 18:54:17,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:17,799 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 475 statements into 95 equivalence classes. [2025-02-06 18:54:18,194 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 475 of 475 statements. [2025-02-06 18:54:18,195 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-02-06 18:54:18,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:23,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:23,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230437515] [2025-02-06 18:54:23,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230437515] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:23,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850273301] [2025-02-06 18:54:23,795 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 18:54:23,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:23,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:23,798 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:23,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 18:54:23,920 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 475 statements into 95 equivalence classes. [2025-02-06 18:54:24,101 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 475 of 475 statements. [2025-02-06 18:54:24,101 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-02-06 18:54:24,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:24,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 97 conjuncts are in the unsatisfiable core [2025-02-06 18:54:24,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:24,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:32,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850273301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:32,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:32,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2025-02-06 18:54:32,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256171672] [2025-02-06 18:54:32,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:32,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-06 18:54:32,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:32,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-06 18:54:32,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-06 18:54:32,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2025-02-06 18:54:32,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1832 transitions, 24561 flow. Second operand has 193 states, 193 states have (on average 13.010362694300518) internal successors, (2511), 193 states have internal predecessors, (2511), 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 18:54:32,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:32,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2025-02-06 18:54:32,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand