./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:03:31,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:03:31,778 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:03:31,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:03:31,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:03:31,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:03:31,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:03:31,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:03:31,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:03:31,802 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:03:31,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:03:31,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:03:31,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:03:31,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:03:31,803 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:03:31,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:03:31,803 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:03:31,803 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:03:31,803 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:03:31,803 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:03:31,804 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:03:31,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:03:31,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:03:31,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:03:31,805 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:03:31,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:03:31,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:03:31,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:03:31,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:03:31,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:03:31,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:03:31,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:03:31,805 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 -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2025-02-08 14:03:32,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:03:32,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:03:32,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:03:32,034 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:03:32,035 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:03:32,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-02-08 14:03:33,202 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/802832559/db110f647d564fae935bf1be7f515c03/FLAGb7c9f8487 [2025-02-08 14:03:33,535 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:03:33,535 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-02-08 14:03:33,553 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/802832559/db110f647d564fae935bf1be7f515c03/FLAGb7c9f8487 [2025-02-08 14:03:33,803 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/802832559/db110f647d564fae935bf1be7f515c03 [2025-02-08 14:03:33,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:03:33,809 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:03:33,810 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:03:33,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:03:33,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:03:33,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:03:33" (1/1) ... [2025-02-08 14:03:33,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55efa566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:33, skipping insertion in model container [2025-02-08 14:03:33,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:03:33" (1/1) ... [2025-02-08 14:03:33,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:03:34,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:03:34,194 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:03:34,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:03:34,282 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:03:34,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34 WrapperNode [2025-02-08 14:03:34,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:03:34,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:03:34,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:03:34,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:03:34,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,319 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2025-02-08 14:03:34,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:03:34,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:03:34,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:03:34,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:03:34,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,334 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-02-08 14:03:34,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,337 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:03:34,344 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:03:34,344 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:03:34,344 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:03:34,345 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (1/1) ... [2025-02-08 14:03:34,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:03:34,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:34,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:03:34,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:03:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:03:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:03:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:03:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2025-02-08 14:03:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2025-02-08 14:03:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:03:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:03:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:03:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:03:34,390 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:03:34,478 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:03:34,480 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:03:34,624 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:03:34,625 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:03:34,720 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:03:34,720 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:03:34,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:03:34 BoogieIcfgContainer [2025-02-08 14:03:34,720 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:03:34,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:03:34,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:03:34,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:03:34,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:03:33" (1/3) ... [2025-02-08 14:03:34,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48542e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:03:34, skipping insertion in model container [2025-02-08 14:03:34,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:34" (2/3) ... [2025-02-08 14:03:34,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48542e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:03:34, skipping insertion in model container [2025-02-08 14:03:34,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:03:34" (3/3) ... [2025-02-08 14:03:34,729 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2025-02-08 14:03:34,739 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:03:34,741 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-1.i that has 2 procedures, 34 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-08 14:03:34,741 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:03:34,776 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 14:03:34,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 35 transitions, 77 flow [2025-02-08 14:03:34,846 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2025-02-08 14:03:34,848 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:03:34,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 34 events. 2/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-02-08 14:03:34,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 35 transitions, 77 flow [2025-02-08 14:03:34,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 67 flow [2025-02-08 14:03:34,856 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:03:34,863 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;@72b618ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:03:34,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-08 14:03:34,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:03:34,867 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-02-08 14:03:34,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:03:34,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:34,868 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:34,868 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:34,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1419499975, now seen corresponding path program 1 times [2025-02-08 14:03:34,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:34,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233847462] [2025-02-08 14:03:34,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:34,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:34,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:03:34,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:03:34,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:34,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:35,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:35,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233847462] [2025-02-08 14:03:35,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233847462] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:35,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:35,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:03:35,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036076669] [2025-02-08 14:03:35,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:35,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:03:35,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:35,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:03:35,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:03:35,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2025-02-08 14:03:35,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:35,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2025-02-08 14:03:35,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:35,206 INFO L124 PetriNetUnfolderBase]: 79/235 cut-off events. [2025-02-08 14:03:35,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:03:35,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 235 events. 79/235 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1050 event pairs, 26 based on Foata normal form. 3/203 useless extension candidates. Maximal degree in co-relation 389. Up to 135 conditions per place. [2025-02-08 14:03:35,209 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 23 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2025-02-08 14:03:35,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 135 flow [2025-02-08 14:03:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:03:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:03:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-02-08 14:03:35,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2025-02-08 14:03:35,218 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 67 flow. Second operand 3 states and 73 transitions. [2025-02-08 14:03:35,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 135 flow [2025-02-08 14:03:35,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:03:35,222 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 87 flow [2025-02-08 14:03:35,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2025-02-08 14:03:35,226 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2025-02-08 14:03:35,227 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 87 flow [2025-02-08 14:03:35,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:35,227 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:35,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:03:35,227 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:35,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:35,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1445780750, now seen corresponding path program 1 times [2025-02-08 14:03:35,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:35,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086382639] [2025-02-08 14:03:35,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:35,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:35,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:03:35,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:03:35,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:35,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:35,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:35,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086382639] [2025-02-08 14:03:35,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086382639] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:35,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:35,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:03:35,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244581161] [2025-02-08 14:03:35,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:35,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:03:35,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:35,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:03:35,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:03:35,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:35,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:35,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:35,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:35,394 INFO L124 PetriNetUnfolderBase]: 102/272 cut-off events. [2025-02-08 14:03:35,394 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2025-02-08 14:03:35,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 272 events. 102/272 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1268 event pairs, 34 based on Foata normal form. 20/262 useless extension candidates. Maximal degree in co-relation 536. Up to 173 conditions per place. [2025-02-08 14:03:35,396 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 33 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2025-02-08 14:03:35,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 210 flow [2025-02-08 14:03:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:03:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:03:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-02-08 14:03:35,398 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171428571428571 [2025-02-08 14:03:35,398 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 87 flow. Second operand 5 states and 108 transitions. [2025-02-08 14:03:35,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 210 flow [2025-02-08 14:03:35,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:03:35,399 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 126 flow [2025-02-08 14:03:35,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2025-02-08 14:03:35,400 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2025-02-08 14:03:35,400 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 126 flow [2025-02-08 14:03:35,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:35,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:35,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:03:35,400 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:35,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1952682608, now seen corresponding path program 1 times [2025-02-08 14:03:35,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:35,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343942888] [2025-02-08 14:03:35,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:35,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:35,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:03:35,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:03:35,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:35,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:35,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:35,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343942888] [2025-02-08 14:03:35,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343942888] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:35,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:35,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:35,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136135805] [2025-02-08 14:03:35,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:35,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:03:35,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:35,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:03:35,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:03:35,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2025-02-08 14:03:35,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:35,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2025-02-08 14:03:35,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:35,572 INFO L124 PetriNetUnfolderBase]: 117/340 cut-off events. [2025-02-08 14:03:35,573 INFO L125 PetriNetUnfolderBase]: For 131/141 co-relation queries the response was YES. [2025-02-08 14:03:35,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 340 events. 117/340 cut-off events. For 131/141 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1625 event pairs, 39 based on Foata normal form. 14/330 useless extension candidates. Maximal degree in co-relation 729. Up to 132 conditions per place. [2025-02-08 14:03:35,581 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 39 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2025-02-08 14:03:35,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 263 flow [2025-02-08 14:03:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:03:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:03:35,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-02-08 14:03:35,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2025-02-08 14:03:35,583 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 126 flow. Second operand 4 states and 99 transitions. [2025-02-08 14:03:35,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 263 flow [2025-02-08 14:03:35,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:03:35,585 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 142 flow [2025-02-08 14:03:35,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2025-02-08 14:03:35,586 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2025-02-08 14:03:35,586 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 142 flow [2025-02-08 14:03:35,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:35,587 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:35,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:03:35,587 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:35,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1941287159, now seen corresponding path program 1 times [2025-02-08 14:03:35,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:35,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762505988] [2025-02-08 14:03:35,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:35,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:03:35,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:03:35,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:35,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:35,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:35,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762505988] [2025-02-08 14:03:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762505988] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:35,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655082755] [2025-02-08 14:03:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:35,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:03:35,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:35,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:03:35,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:03:35,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2025-02-08 14:03:35,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:35,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2025-02-08 14:03:35,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:35,755 INFO L124 PetriNetUnfolderBase]: 217/598 cut-off events. [2025-02-08 14:03:35,755 INFO L125 PetriNetUnfolderBase]: For 394/457 co-relation queries the response was YES. [2025-02-08 14:03:35,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 598 events. 217/598 cut-off events. For 394/457 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3105 event pairs, 79 based on Foata normal form. 29/608 useless extension candidates. Maximal degree in co-relation 1364. Up to 278 conditions per place. [2025-02-08 14:03:35,759 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 52 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2025-02-08 14:03:35,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 371 flow [2025-02-08 14:03:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:03:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:03:35,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-02-08 14:03:35,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2025-02-08 14:03:35,760 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 142 flow. Second operand 4 states and 99 transitions. [2025-02-08 14:03:35,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 371 flow [2025-02-08 14:03:35,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:03:35,763 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 164 flow [2025-02-08 14:03:35,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2025-02-08 14:03:35,763 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2025-02-08 14:03:35,763 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 164 flow [2025-02-08 14:03:35,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:35,764 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:35,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:03:35,764 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:35,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:35,764 INFO L85 PathProgramCache]: Analyzing trace with hash 337860258, now seen corresponding path program 1 times [2025-02-08 14:03:35,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:35,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575756205] [2025-02-08 14:03:35,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:35,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:35,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:03:35,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:03:35,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:35,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:35,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:35,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575756205] [2025-02-08 14:03:35,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575756205] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:35,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:35,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310293470] [2025-02-08 14:03:35,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:35,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:03:35,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:35,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:03:35,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:03:35,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2025-02-08 14:03:35,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:35,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2025-02-08 14:03:35,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:35,875 INFO L124 PetriNetUnfolderBase]: 111/407 cut-off events. [2025-02-08 14:03:35,875 INFO L125 PetriNetUnfolderBase]: For 268/284 co-relation queries the response was YES. [2025-02-08 14:03:35,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 407 events. 111/407 cut-off events. For 268/284 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1922 event pairs, 37 based on Foata normal form. 20/425 useless extension candidates. Maximal degree in co-relation 989. Up to 128 conditions per place. [2025-02-08 14:03:35,877 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 30 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2025-02-08 14:03:35,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 269 flow [2025-02-08 14:03:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:03:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:03:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2025-02-08 14:03:35,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2025-02-08 14:03:35,879 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 164 flow. Second operand 3 states and 76 transitions. [2025-02-08 14:03:35,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 269 flow [2025-02-08 14:03:35,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 259 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 14:03:35,883 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 151 flow [2025-02-08 14:03:35,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2025-02-08 14:03:35,883 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2025-02-08 14:03:35,883 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 151 flow [2025-02-08 14:03:35,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:35,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:35,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:03:35,884 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:35,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 95674451, now seen corresponding path program 1 times [2025-02-08 14:03:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:35,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180198081] [2025-02-08 14:03:35,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:35,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:03:35,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:03:35,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:35,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:35,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:35,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180198081] [2025-02-08 14:03:35,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180198081] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:35,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:35,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124775749] [2025-02-08 14:03:35,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:35,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:03:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:35,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:03:35,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:03:35,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:35,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:35,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:35,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:35,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:36,068 INFO L124 PetriNetUnfolderBase]: 206/602 cut-off events. [2025-02-08 14:03:36,068 INFO L125 PetriNetUnfolderBase]: For 412/448 co-relation queries the response was YES. [2025-02-08 14:03:36,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 602 events. 206/602 cut-off events. For 412/448 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3173 event pairs, 81 based on Foata normal form. 10/587 useless extension candidates. Maximal degree in co-relation 1594. Up to 223 conditions per place. [2025-02-08 14:03:36,071 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2025-02-08 14:03:36,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 359 flow [2025-02-08 14:03:36,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:03:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:03:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-02-08 14:03:36,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-02-08 14:03:36,072 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 151 flow. Second operand 5 states and 110 transitions. [2025-02-08 14:03:36,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 359 flow [2025-02-08 14:03:36,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:03:36,074 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 180 flow [2025-02-08 14:03:36,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2025-02-08 14:03:36,075 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2025-02-08 14:03:36,075 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 180 flow [2025-02-08 14:03:36,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:36,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:36,076 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:36,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:03:36,076 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:36,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 593571690, now seen corresponding path program 1 times [2025-02-08 14:03:36,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:36,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749653859] [2025-02-08 14:03:36,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:36,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:03:36,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:03:36,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:36,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:36,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:36,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749653859] [2025-02-08 14:03:36,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749653859] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:36,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:36,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:36,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537081635] [2025-02-08 14:03:36,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:36,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:03:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:36,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:03:36,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:03:36,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:36,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:36,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:36,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:36,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:36,276 INFO L124 PetriNetUnfolderBase]: 245/768 cut-off events. [2025-02-08 14:03:36,276 INFO L125 PetriNetUnfolderBase]: For 731/762 co-relation queries the response was YES. [2025-02-08 14:03:36,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 768 events. 245/768 cut-off events. For 731/762 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4363 event pairs, 105 based on Foata normal form. 16/773 useless extension candidates. Maximal degree in co-relation 2015. Up to 272 conditions per place. [2025-02-08 14:03:36,280 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 65 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2025-02-08 14:03:36,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 509 flow [2025-02-08 14:03:36,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:03:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:03:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2025-02-08 14:03:36,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2025-02-08 14:03:36,281 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 180 flow. Second operand 6 states and 135 transitions. [2025-02-08 14:03:36,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 509 flow [2025-02-08 14:03:36,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:03:36,283 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 233 flow [2025-02-08 14:03:36,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2025-02-08 14:03:36,284 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2025-02-08 14:03:36,284 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 233 flow [2025-02-08 14:03:36,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:36,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:36,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:36,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:03:36,284 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:36,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:36,285 INFO L85 PathProgramCache]: Analyzing trace with hash -656161010, now seen corresponding path program 1 times [2025-02-08 14:03:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:36,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092539276] [2025-02-08 14:03:36,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:36,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:36,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:03:36,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:03:36,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:36,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:36,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:36,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092539276] [2025-02-08 14:03:36,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092539276] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:36,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:36,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853261682] [2025-02-08 14:03:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:36,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:03:36,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:36,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:03:36,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:03:36,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:36,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:36,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:36,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:36,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:36,464 INFO L124 PetriNetUnfolderBase]: 244/721 cut-off events. [2025-02-08 14:03:36,464 INFO L125 PetriNetUnfolderBase]: For 1022/1093 co-relation queries the response was YES. [2025-02-08 14:03:36,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 721 events. 244/721 cut-off events. For 1022/1093 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3878 event pairs, 100 based on Foata normal form. 5/724 useless extension candidates. Maximal degree in co-relation 2053. Up to 447 conditions per place. [2025-02-08 14:03:36,469 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 51 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2025-02-08 14:03:36,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 464 flow [2025-02-08 14:03:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:03:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:03:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-02-08 14:03:36,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-02-08 14:03:36,471 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 233 flow. Second operand 5 states and 110 transitions. [2025-02-08 14:03:36,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 464 flow [2025-02-08 14:03:36,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 457 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-08 14:03:36,475 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 267 flow [2025-02-08 14:03:36,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2025-02-08 14:03:36,475 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2025-02-08 14:03:36,475 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 267 flow [2025-02-08 14:03:36,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:36,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:36,476 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:36,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:03:36,476 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:36,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1220853410, now seen corresponding path program 1 times [2025-02-08 14:03:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:36,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277669633] [2025-02-08 14:03:36,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:36,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:36,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:03:36,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:03:36,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:36,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:36,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:36,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277669633] [2025-02-08 14:03:36,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277669633] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:36,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:36,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:36,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476746792] [2025-02-08 14:03:36,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:36,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:03:36,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:36,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:03:36,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:03:36,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:36,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:36,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:36,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:36,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:36,664 INFO L124 PetriNetUnfolderBase]: 242/799 cut-off events. [2025-02-08 14:03:36,664 INFO L125 PetriNetUnfolderBase]: For 1207/1214 co-relation queries the response was YES. [2025-02-08 14:03:36,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 799 events. 242/799 cut-off events. For 1207/1214 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4815 event pairs, 121 based on Foata normal form. 3/792 useless extension candidates. Maximal degree in co-relation 2245. Up to 457 conditions per place. [2025-02-08 14:03:36,669 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 50 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2025-02-08 14:03:36,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 494 flow [2025-02-08 14:03:36,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:03:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:03:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2025-02-08 14:03:36,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2025-02-08 14:03:36,670 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 267 flow. Second operand 7 states and 137 transitions. [2025-02-08 14:03:36,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 494 flow [2025-02-08 14:03:36,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 481 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-08 14:03:36,674 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 310 flow [2025-02-08 14:03:36,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2025-02-08 14:03:36,675 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 35 predicate places. [2025-02-08 14:03:36,675 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 310 flow [2025-02-08 14:03:36,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:36,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:36,675 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:36,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:03:36,675 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:36,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1474462951, now seen corresponding path program 1 times [2025-02-08 14:03:36,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:36,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929985694] [2025-02-08 14:03:36,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:36,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:36,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:03:36,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:03:36,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:36,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:36,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929985694] [2025-02-08 14:03:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929985694] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:03:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875116681] [2025-02-08 14:03:36,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:36,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:36,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:36,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:03:36,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:03:36,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:03:36,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:03:36,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:36,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:36,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:03:36,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:03:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:36,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:03:36,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875116681] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:36,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:03:36,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2025-02-08 14:03:36,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752476555] [2025-02-08 14:03:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:36,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:03:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:36,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:03:36,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:03:36,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-08 14:03:36,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:36,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:36,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-08 14:03:36,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:36,975 INFO L124 PetriNetUnfolderBase]: 245/733 cut-off events. [2025-02-08 14:03:36,976 INFO L125 PetriNetUnfolderBase]: For 1252/1296 co-relation queries the response was YES. [2025-02-08 14:03:36,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 733 events. 245/733 cut-off events. For 1252/1296 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4112 event pairs, 119 based on Foata normal form. 22/745 useless extension candidates. Maximal degree in co-relation 2124. Up to 485 conditions per place. [2025-02-08 14:03:36,981 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 42 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2025-02-08 14:03:36,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 417 flow [2025-02-08 14:03:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:03:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:03:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-08 14:03:36,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2025-02-08 14:03:36,982 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 310 flow. Second operand 4 states and 78 transitions. [2025-02-08 14:03:36,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 417 flow [2025-02-08 14:03:36,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 399 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-08 14:03:36,986 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 278 flow [2025-02-08 14:03:36,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2025-02-08 14:03:36,986 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2025-02-08 14:03:36,986 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 278 flow [2025-02-08 14:03:36,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:36,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:36,987 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:36,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:03:37,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 14:03:37,189 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:37,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:37,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1536288571, now seen corresponding path program 1 times [2025-02-08 14:03:37,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:37,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755344845] [2025-02-08 14:03:37,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:37,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:37,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:03:37,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:03:37,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:37,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755344845] [2025-02-08 14:03:37,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755344845] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:03:37,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644721012] [2025-02-08 14:03:37,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:37,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:37,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:03:37,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:03:37,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:03:37,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:03:37,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:37,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:37,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:03:37,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:03:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:37,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:03:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:37,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644721012] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:03:37,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:03:37,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:03:37,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891441295] [2025-02-08 14:03:37,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:03:37,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:03:37,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:37,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:03:37,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:03:37,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:37,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 278 flow. Second operand has 12 states, 12 states have (on average 15.5) internal successors, (186), 12 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:37,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:37,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:37,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:37,807 INFO L124 PetriNetUnfolderBase]: 535/1731 cut-off events. [2025-02-08 14:03:37,807 INFO L125 PetriNetUnfolderBase]: For 2766/2896 co-relation queries the response was YES. [2025-02-08 14:03:37,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 1731 events. 535/1731 cut-off events. For 2766/2896 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12789 event pairs, 86 based on Foata normal form. 66/1784 useless extension candidates. Maximal degree in co-relation 4664. Up to 354 conditions per place. [2025-02-08 14:03:37,816 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 153 selfloop transitions, 28 changer transitions 0/193 dead transitions. [2025-02-08 14:03:37,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 193 transitions, 1306 flow [2025-02-08 14:03:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 14:03:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 14:03:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 367 transitions. [2025-02-08 14:03:37,818 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6553571428571429 [2025-02-08 14:03:37,818 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 278 flow. Second operand 16 states and 367 transitions. [2025-02-08 14:03:37,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 193 transitions, 1306 flow [2025-02-08 14:03:37,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 193 transitions, 1305 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:03:37,824 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 584 flow [2025-02-08 14:03:37,824 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=584, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2025-02-08 14:03:37,825 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 52 predicate places. [2025-02-08 14:03:37,825 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 584 flow [2025-02-08 14:03:37,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.5) internal successors, (186), 12 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:37,825 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:37,825 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:37,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:03:38,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:38,030 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:38,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash -401047319, now seen corresponding path program 1 times [2025-02-08 14:03:38,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:38,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099629488] [2025-02-08 14:03:38,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:38,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:03:38,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:03:38,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:38,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:38,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:38,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099629488] [2025-02-08 14:03:38,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099629488] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:03:38,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944079691] [2025-02-08 14:03:38,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:38,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:38,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:38,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:03:38,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:03:38,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:03:38,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:03:38,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:38,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:38,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:03:38,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:03:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:38,206 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:03:38,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944079691] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:38,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:03:38,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:03:38,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508231118] [2025-02-08 14:03:38,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:38,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:03:38,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:38,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:03:38,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:03:38,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2025-02-08 14:03:38,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:38,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:38,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2025-02-08 14:03:38,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:38,522 INFO L124 PetriNetUnfolderBase]: 548/1649 cut-off events. [2025-02-08 14:03:38,522 INFO L125 PetriNetUnfolderBase]: For 3184/3302 co-relation queries the response was YES. [2025-02-08 14:03:38,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4908 conditions, 1649 events. 548/1649 cut-off events. For 3184/3302 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12006 event pairs, 52 based on Foata normal form. 55/1649 useless extension candidates. Maximal degree in co-relation 4871. Up to 680 conditions per place. [2025-02-08 14:03:38,530 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 115 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2025-02-08 14:03:38,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 136 transitions, 1258 flow [2025-02-08 14:03:38,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:03:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:03:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2025-02-08 14:03:38,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2025-02-08 14:03:38,532 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 584 flow. Second operand 6 states and 138 transitions. [2025-02-08 14:03:38,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 136 transitions, 1258 flow [2025-02-08 14:03:38,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 136 transitions, 1060 flow, removed 84 selfloop flow, removed 6 redundant places. [2025-02-08 14:03:38,544 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 486 flow [2025-02-08 14:03:38,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=486, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2025-02-08 14:03:38,545 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2025-02-08 14:03:38,545 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 486 flow [2025-02-08 14:03:38,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:38,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:38,546 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:38,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:03:38,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:38,747 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:38,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash -232749046, now seen corresponding path program 1 times [2025-02-08 14:03:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:38,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115511579] [2025-02-08 14:03:38,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:38,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:03:38,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:03:38,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:38,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:38,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:38,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115511579] [2025-02-08 14:03:38,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115511579] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:03:38,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557921623] [2025-02-08 14:03:38,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:38,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:38,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:38,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:03:38,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:03:38,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:03:38,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:03:38,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:38,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:38,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:03:38,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:03:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:38,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:03:38,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557921623] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:38,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:03:38,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:03:38,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791112579] [2025-02-08 14:03:38,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:38,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:03:38,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:38,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:03:38,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:03:38,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2025-02-08 14:03:38,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:38,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:38,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2025-02-08 14:03:38,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:39,095 INFO L124 PetriNetUnfolderBase]: 675/1982 cut-off events. [2025-02-08 14:03:39,096 INFO L125 PetriNetUnfolderBase]: For 3718/3760 co-relation queries the response was YES. [2025-02-08 14:03:39,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5886 conditions, 1982 events. 675/1982 cut-off events. For 3718/3760 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 14790 event pairs, 81 based on Foata normal form. 75/1975 useless extension candidates. Maximal degree in co-relation 5851. Up to 798 conditions per place. [2025-02-08 14:03:39,106 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 138 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2025-02-08 14:03:39,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 1331 flow [2025-02-08 14:03:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:03:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:03:39,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2025-02-08 14:03:39,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:03:39,108 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 486 flow. Second operand 6 states and 140 transitions. [2025-02-08 14:03:39,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 1331 flow [2025-02-08 14:03:39,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 157 transitions, 1306 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:03:39,115 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 487 flow [2025-02-08 14:03:39,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2025-02-08 14:03:39,116 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2025-02-08 14:03:39,116 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 487 flow [2025-02-08 14:03:39,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:39,116 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:39,117 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:03:39,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 14:03:39,317 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,SelfDestructingSolverStorable12 [2025-02-08 14:03:39,317 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:39,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash 452435209, now seen corresponding path program 1 times [2025-02-08 14:03:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029340305] [2025-02-08 14:03:39,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:39,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:03:39,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:03:39,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:39,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:03:39,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:39,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029340305] [2025-02-08 14:03:39,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029340305] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:39,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:39,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:39,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171770561] [2025-02-08 14:03:39,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:39,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:03:39,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:39,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:03:39,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:03:39,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2025-02-08 14:03:39,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:39,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:39,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2025-02-08 14:03:39,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:39,513 INFO L124 PetriNetUnfolderBase]: 605/1811 cut-off events. [2025-02-08 14:03:39,514 INFO L125 PetriNetUnfolderBase]: For 3423/3458 co-relation queries the response was YES. [2025-02-08 14:03:39,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5473 conditions, 1811 events. 605/1811 cut-off events. For 3423/3458 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13095 event pairs, 133 based on Foata normal form. 55/1866 useless extension candidates. Maximal degree in co-relation 5438. Up to 706 conditions per place. [2025-02-08 14:03:39,523 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 89 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2025-02-08 14:03:39,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 109 transitions, 902 flow [2025-02-08 14:03:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:03:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:03:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-02-08 14:03:39,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2025-02-08 14:03:39,524 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 487 flow. Second operand 4 states and 87 transitions. [2025-02-08 14:03:39,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 109 transitions, 902 flow [2025-02-08 14:03:39,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 883 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:03:39,531 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 494 flow [2025-02-08 14:03:39,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=494, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2025-02-08 14:03:39,531 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2025-02-08 14:03:39,531 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 494 flow [2025-02-08 14:03:39,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:39,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:39,532 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:03:39,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 14:03:39,532 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:39,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1374714349, now seen corresponding path program 1 times [2025-02-08 14:03:39,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:39,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491873137] [2025-02-08 14:03:39,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:39,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:39,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:03:39,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:03:39,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:39,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:03:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491873137] [2025-02-08 14:03:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491873137] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222362268] [2025-02-08 14:03:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:39,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:03:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:39,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:03:39,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:03:39,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:39,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:39,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:39,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:39,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:39,739 INFO L124 PetriNetUnfolderBase]: 739/2042 cut-off events. [2025-02-08 14:03:39,739 INFO L125 PetriNetUnfolderBase]: For 4550/4554 co-relation queries the response was YES. [2025-02-08 14:03:39,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6504 conditions, 2042 events. 739/2042 cut-off events. For 4550/4554 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 14523 event pairs, 177 based on Foata normal form. 75/2110 useless extension candidates. Maximal degree in co-relation 6470. Up to 824 conditions per place. [2025-02-08 14:03:39,752 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 112 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2025-02-08 14:03:39,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 131 transitions, 1176 flow [2025-02-08 14:03:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:03:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:03:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2025-02-08 14:03:39,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-02-08 14:03:39,753 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 494 flow. Second operand 4 states and 88 transitions. [2025-02-08 14:03:39,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 131 transitions, 1176 flow [2025-02-08 14:03:39,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 131 transitions, 1150 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 14:03:39,795 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 498 flow [2025-02-08 14:03:39,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2025-02-08 14:03:39,795 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2025-02-08 14:03:39,795 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 498 flow [2025-02-08 14:03:39,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:39,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:39,795 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:39,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 14:03:39,796 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:39,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash 581904889, now seen corresponding path program 1 times [2025-02-08 14:03:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:39,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848710829] [2025-02-08 14:03:39,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:39,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:39,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 14:03:39,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 14:03:39,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:39,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:39,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:39,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848710829] [2025-02-08 14:03:39,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848710829] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:03:39,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721277684] [2025-02-08 14:03:39,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:39,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:39,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:39,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:03:39,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:03:39,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 14:03:40,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 14:03:40,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:40,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:40,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 14:03:40,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:03:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:40,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:03:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:40,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721277684] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:03:40,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:03:40,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-02-08 14:03:40,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649529661] [2025-02-08 14:03:40,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:03:40,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 14:03:40,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:40,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 14:03:40,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2025-02-08 14:03:40,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:40,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 498 flow. Second operand has 22 states, 22 states have (on average 15.863636363636363) internal successors, (349), 22 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:40,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:40,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:40,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:41,963 INFO L124 PetriNetUnfolderBase]: 2847/8721 cut-off events. [2025-02-08 14:03:41,963 INFO L125 PetriNetUnfolderBase]: For 32196/32196 co-relation queries the response was YES. [2025-02-08 14:03:41,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27662 conditions, 8721 events. 2847/8721 cut-off events. For 32196/32196 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 75105 event pairs, 320 based on Foata normal form. 454/9159 useless extension candidates. Maximal degree in co-relation 27628. Up to 1262 conditions per place. [2025-02-08 14:03:42,103 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 541 selfloop transitions, 133 changer transitions 0/684 dead transitions. [2025-02-08 14:03:42,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 684 transitions, 5394 flow [2025-02-08 14:03:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-02-08 14:03:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2025-02-08 14:03:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1275 transitions. [2025-02-08 14:03:42,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2025-02-08 14:03:42,113 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 498 flow. Second operand 54 states and 1275 transitions. [2025-02-08 14:03:42,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 684 transitions, 5394 flow [2025-02-08 14:03:42,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 684 transitions, 5188 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:03:42,177 INFO L231 Difference]: Finished difference. Result has 171 places, 189 transitions, 1983 flow [2025-02-08 14:03:42,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=1983, PETRI_PLACES=171, PETRI_TRANSITIONS=189} [2025-02-08 14:03:42,177 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 137 predicate places. [2025-02-08 14:03:42,178 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 189 transitions, 1983 flow [2025-02-08 14:03:42,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 15.863636363636363) internal successors, (349), 22 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:42,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:42,182 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:03:42,188 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 [2025-02-08 14:03:42,382 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,SelfDestructingSolverStorable15 [2025-02-08 14:03:42,382 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:42,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:42,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1037859091, now seen corresponding path program 1 times [2025-02-08 14:03:42,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:42,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190062256] [2025-02-08 14:03:42,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:42,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:42,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-08 14:03:42,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-08 14:03:42,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:42,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:42,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190062256] [2025-02-08 14:03:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190062256] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:03:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245412618] [2025-02-08 14:03:42,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:42,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:42,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:42,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:03:42,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 14:03:42,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-08 14:03:42,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-08 14:03:42,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:42,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:42,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 14:03:42,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:03:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:42,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:03:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245412618] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:03:43,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:03:43,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2025-02-08 14:03:43,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208458494] [2025-02-08 14:03:43,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:03:43,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-08 14:03:43,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:43,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-08 14:03:43,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2025-02-08 14:03:43,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:43,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 189 transitions, 1983 flow. Second operand has 28 states, 28 states have (on average 16.607142857142858) internal successors, (465), 28 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:43,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:43,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:43,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:50,016 INFO L124 PetriNetUnfolderBase]: 10347/32337 cut-off events. [2025-02-08 14:03:50,017 INFO L125 PetriNetUnfolderBase]: For 673066/673066 co-relation queries the response was YES. [2025-02-08 14:03:50,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106278 conditions, 32337 events. 10347/32337 cut-off events. For 673066/673066 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 331313 event pairs, 1436 based on Foata normal form. 1087/33397 useless extension candidates. Maximal degree in co-relation 106206. Up to 4786 conditions per place. [2025-02-08 14:03:50,472 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 908 selfloop transitions, 464 changer transitions 0/1382 dead transitions. [2025-02-08 14:03:50,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 1382 transitions, 13012 flow [2025-02-08 14:03:50,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2025-02-08 14:03:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2025-02-08 14:03:50,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 2028 transitions. [2025-02-08 14:03:50,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6737541528239203 [2025-02-08 14:03:50,478 INFO L175 Difference]: Start difference. First operand has 171 places, 189 transitions, 1983 flow. Second operand 86 states and 2028 transitions. [2025-02-08 14:03:50,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 1382 transitions, 13012 flow [2025-02-08 14:03:50,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 1382 transitions, 11383 flow, removed 794 selfloop flow, removed 9 redundant places. [2025-02-08 14:03:50,956 INFO L231 Difference]: Finished difference. Result has 297 places, 580 transitions, 6240 flow [2025-02-08 14:03:50,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=6240, PETRI_PLACES=297, PETRI_TRANSITIONS=580} [2025-02-08 14:03:50,957 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 263 predicate places. [2025-02-08 14:03:50,957 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 580 transitions, 6240 flow [2025-02-08 14:03:50,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.607142857142858) internal successors, (465), 28 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:50,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:50,957 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:03:50,964 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 [2025-02-08 14:03:51,161 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,SelfDestructingSolverStorable16 [2025-02-08 14:03:51,161 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:03:51,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:51,162 INFO L85 PathProgramCache]: Analyzing trace with hash 501340439, now seen corresponding path program 1 times [2025-02-08 14:03:51,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:51,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024774755] [2025-02-08 14:03:51,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:51,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:51,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-08 14:03:51,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-08 14:03:51,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:51,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:51,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024774755] [2025-02-08 14:03:51,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024774755] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:03:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557578858] [2025-02-08 14:03:51,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:51,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:51,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:51,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:03:51,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 14:03:51,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-08 14:03:51,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-08 14:03:51,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:51,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:51,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 14:03:51,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:03:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:51,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:03:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:52,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557578858] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:03:52,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:03:52,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2025-02-08 14:03:52,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700860837] [2025-02-08 14:03:52,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:03:52,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-08 14:03:52,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:52,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-08 14:03:52,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 14:03:52,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:03:52,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 580 transitions, 6240 flow. Second operand has 34 states, 34 states have (on average 16.147058823529413) internal successors, (549), 34 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:52,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:52,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:03:52,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:11,920 INFO L124 PetriNetUnfolderBase]: 24205/75820 cut-off events. [2025-02-08 14:04:11,920 INFO L125 PetriNetUnfolderBase]: For 4098190/4098190 co-relation queries the response was YES. [2025-02-08 14:04:13,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259822 conditions, 75820 events. 24205/75820 cut-off events. For 4098190/4098190 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 910457 event pairs, 2729 based on Foata normal form. 1523/77311 useless extension candidates. Maximal degree in co-relation 259700. Up to 11430 conditions per place. [2025-02-08 14:04:14,043 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 1411 selfloop transitions, 1180 changer transitions 0/2601 dead transitions. [2025-02-08 14:04:14,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 2601 transitions, 26975 flow [2025-02-08 14:04:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2025-02-08 14:04:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2025-02-08 14:04:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 3129 transitions. [2025-02-08 14:04:14,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6671641791044776 [2025-02-08 14:04:14,052 INFO L175 Difference]: Start difference. First operand has 297 places, 580 transitions, 6240 flow. Second operand 134 states and 3129 transitions. [2025-02-08 14:04:14,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 2601 transitions, 26975 flow [2025-02-08 14:04:18,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 2601 transitions, 25597 flow, removed 650 selfloop flow, removed 22 redundant places. [2025-02-08 14:04:18,952 INFO L231 Difference]: Finished difference. Result has 456 places, 1296 transitions, 15883 flow [2025-02-08 14:04:18,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5458, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=134, PETRI_FLOW=15883, PETRI_PLACES=456, PETRI_TRANSITIONS=1296} [2025-02-08 14:04:18,953 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 422 predicate places. [2025-02-08 14:04:18,953 INFO L471 AbstractCegarLoop]: Abstraction has has 456 places, 1296 transitions, 15883 flow [2025-02-08 14:04:18,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 16.147058823529413) internal successors, (549), 34 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:18,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:18,954 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2025-02-08 14:04:18,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 14:04:19,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:19,158 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:04:19,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1353178001, now seen corresponding path program 2 times [2025-02-08 14:04:19,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:19,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088623249] [2025-02-08 14:04:19,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:19,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:19,170 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 114 statements into 2 equivalence classes. [2025-02-08 14:04:19,185 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 114 of 114 statements. [2025-02-08 14:04:19,188 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:04:19,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088623249] [2025-02-08 14:04:19,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088623249] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760525556] [2025-02-08 14:04:19,707 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:19,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:19,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:04:19,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 14:04:19,771 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 114 statements into 2 equivalence classes. [2025-02-08 14:04:19,808 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 114 of 114 statements. [2025-02-08 14:04:19,808 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:04:19,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:19,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 14:04:19,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:19,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:04:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:20,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760525556] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:04:20,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:04:20,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2025-02-08 14:04:20,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541594901] [2025-02-08 14:04:20,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:04:20,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-08 14:04:20,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:20,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-08 14:04:20,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=1351, Unknown=0, NotChecked=0, Total=1892 [2025-02-08 14:04:20,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-08 14:04:20,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 1296 transitions, 15883 flow. Second operand has 44 states, 44 states have (on average 16.386363636363637) internal successors, (721), 44 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:20,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:20,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-08 14:04:20,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand