./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:53:24,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:53:24,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:53:24,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:53:24,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:53:24,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:53:24,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:53:24,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:53:24,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:53:24,667 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:53:24,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:53:24,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:53:24,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:53:24,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:53:24,667 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:53:24,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:53:24,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:53:24,668 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:53:24,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:53:24,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:53:24,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:53:24,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:53:24,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:53:24,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:53:24,668 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:53:24,669 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:53:24,669 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:53:24,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:53:24,669 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:53:24,669 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:53:24,669 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:53:24,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:53:24,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:53:24,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:53:24,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:53:24,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:53:24,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:53:24,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:53:24,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:53:24,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:53:24,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:53:24,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:53:24,670 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:53:24,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:53:24,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:53:24,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:53:24,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:53:24,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:53:24,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:53:24,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:53:24,671 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 -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2025-01-10 06:53:24,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:53:24,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:53:24,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:53:24,906 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:53:24,906 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:53:24,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2025-01-10 06:53:26,016 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d07fa0cfc/f8d72f09f8c24b699abdce5854e4a752/FLAG75524affc [2025-01-10 06:53:26,286 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:53:26,288 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2025-01-10 06:53:26,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d07fa0cfc/f8d72f09f8c24b699abdce5854e4a752/FLAG75524affc [2025-01-10 06:53:26,590 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d07fa0cfc/f8d72f09f8c24b699abdce5854e4a752 [2025-01-10 06:53:26,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:53:26,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:53:26,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:53:26,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:53:26,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:53:26,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3506e4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26, skipping insertion in model container [2025-01-10 06:53:26,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:53:26,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:53:26,721 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:53:26,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:53:26,741 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:53:26,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26 WrapperNode [2025-01-10 06:53:26,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:53:26,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:53:26,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:53:26,743 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:53:26,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,762 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2025-01-10 06:53:26,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:53:26,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:53:26,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:53:26,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:53:26,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,770 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,777 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 06:53:26,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,779 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:53:26,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:53:26,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:53:26,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:53:26,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (1/1) ... [2025-01-10 06:53:26,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:53:26,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:26,823 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) [2025-01-10 06:53:26,826 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 [2025-01-10 06:53:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:53:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:53:26,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:53:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:53:26,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:53:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:53:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:53:26,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:53:26,847 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:53:26,912 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:53:26,914 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:53:27,042 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:53:27,042 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:53:27,135 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:53:27,135 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:53:27,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:53:27 BoogieIcfgContainer [2025-01-10 06:53:27,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:53:27,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:53:27,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:53:27,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:53:27,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:53:26" (1/3) ... [2025-01-10 06:53:27,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766f7ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:53:27, skipping insertion in model container [2025-01-10 06:53:27,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:53:26" (2/3) ... [2025-01-10 06:53:27,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766f7ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:53:27, skipping insertion in model container [2025-01-10 06:53:27,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:53:27" (3/3) ... [2025-01-10 06:53:27,144 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2025-01-10 06:53:27,155 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:53:27,156 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-figure1.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-01-10 06:53:27,156 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:53:27,211 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 06:53:27,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2025-01-10 06:53:27,258 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-01-10 06:53:27,261 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 06:53:27,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 66 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-01-10 06:53:27,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2025-01-10 06:53:27,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2025-01-10 06:53:27,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:53:27,280 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;@47c11c40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:53:27,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-01-10 06:53:27,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:53:27,288 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2025-01-10 06:53:27,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:53:27,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:27,288 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:53:27,289 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:27,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash 232704479, now seen corresponding path program 1 times [2025-01-10 06:53:27,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:27,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65704397] [2025-01-10 06:53:27,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:27,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:27,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:53:27,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:53:27,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:27,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:27,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65704397] [2025-01-10 06:53:27,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65704397] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:27,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:27,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:53:27,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977341582] [2025-01-10 06:53:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:27,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:27,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:27,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:27,484 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:27,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2025-01-10 06:53:27,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:27,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:27,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:27,647 INFO L124 PetriNetUnfolderBase]: 194/407 cut-off events. [2025-01-10 06:53:27,648 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-01-10 06:53:27,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 407 events. 194/407 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1823 event pairs, 77 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 717. Up to 289 conditions per place. [2025-01-10 06:53:27,652 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2025-01-10 06:53:27,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 145 flow [2025-01-10 06:53:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:27,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2025-01-10 06:53:27,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2025-01-10 06:53:27,665 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 59 transitions. [2025-01-10 06:53:27,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 145 flow [2025-01-10 06:53:27,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 137 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:53:27,673 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 76 flow [2025-01-10 06:53:27,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2025-01-10 06:53:27,679 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2025-01-10 06:53:27,680 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 76 flow [2025-01-10 06:53:27,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2025-01-10 06:53:27,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:27,681 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:27,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:53:27,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:27,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:27,682 INFO L85 PathProgramCache]: Analyzing trace with hash 290713986, now seen corresponding path program 1 times [2025-01-10 06:53:27,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:27,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959009833] [2025-01-10 06:53:27,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:27,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:27,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:53:27,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:53:27,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:27,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:27,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:27,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959009833] [2025-01-10 06:53:27,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959009833] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:27,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:27,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:27,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621453034] [2025-01-10 06:53:27,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:27,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:27,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:27,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:27,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:27,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:53:27,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2025-01-10 06:53:27,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:27,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:53:27,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:27,943 INFO L124 PetriNetUnfolderBase]: 298/570 cut-off events. [2025-01-10 06:53:27,943 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-01-10 06:53:27,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 570 events. 298/570 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2635 event pairs, 127 based on Foata normal form. 18/489 useless extension candidates. Maximal degree in co-relation 733. Up to 420 conditions per place. [2025-01-10 06:53:27,948 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 45 selfloop transitions, 3 changer transitions 1/54 dead transitions. [2025-01-10 06:53:27,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 54 transitions, 232 flow [2025-01-10 06:53:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2025-01-10 06:53:27,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2025-01-10 06:53:27,951 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 4 states and 79 transitions. [2025-01-10 06:53:27,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 54 transitions, 232 flow [2025-01-10 06:53:27,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:27,954 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 98 flow [2025-01-10 06:53:27,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2025-01-10 06:53:27,956 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2025-01-10 06:53:27,956 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 98 flow [2025-01-10 06:53:27,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2025-01-10 06:53:27,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:27,956 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:27,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:53:27,956 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:27,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:27,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1377230376, now seen corresponding path program 1 times [2025-01-10 06:53:27,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:27,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044267191] [2025-01-10 06:53:27,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:27,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:27,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:53:27,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:53:27,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:27,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:28,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:28,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044267191] [2025-01-10 06:53:28,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044267191] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:28,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:28,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:28,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853305322] [2025-01-10 06:53:28,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:28,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:28,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:28,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:28,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:28,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:28,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-01-10 06:53:28,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:28,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:28,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:28,118 INFO L124 PetriNetUnfolderBase]: 210/461 cut-off events. [2025-01-10 06:53:28,119 INFO L125 PetriNetUnfolderBase]: For 155/159 co-relation queries the response was YES. [2025-01-10 06:53:28,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 461 events. 210/461 cut-off events. For 155/159 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2247 event pairs, 122 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 859. Up to 262 conditions per place. [2025-01-10 06:53:28,125 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2025-01-10 06:53:28,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 228 flow [2025-01-10 06:53:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2025-01-10 06:53:28,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65625 [2025-01-10 06:53:28,126 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 98 flow. Second operand 3 states and 63 transitions. [2025-01-10 06:53:28,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 228 flow [2025-01-10 06:53:28,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:28,128 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 120 flow [2025-01-10 06:53:28,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2025-01-10 06:53:28,128 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2025-01-10 06:53:28,128 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 120 flow [2025-01-10 06:53:28,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-01-10 06:53:28,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:28,129 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:28,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:53:28,129 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:28,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1978421747, now seen corresponding path program 1 times [2025-01-10 06:53:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294813597] [2025-01-10 06:53:28,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:28,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:53:28,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:53:28,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:28,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:28,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:28,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294813597] [2025-01-10 06:53:28,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294813597] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:28,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:28,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:28,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620934251] [2025-01-10 06:53:28,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:28,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:28,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:28,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:28,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:28,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:28,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:28,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:28,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:28,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:28,304 INFO L124 PetriNetUnfolderBase]: 261/558 cut-off events. [2025-01-10 06:53:28,305 INFO L125 PetriNetUnfolderBase]: For 468/470 co-relation queries the response was YES. [2025-01-10 06:53:28,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 558 events. 261/558 cut-off events. For 468/470 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2545 event pairs, 45 based on Foata normal form. 25/570 useless extension candidates. Maximal degree in co-relation 1203. Up to 236 conditions per place. [2025-01-10 06:53:28,308 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2025-01-10 06:53:28,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 265 flow [2025-01-10 06:53:28,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2025-01-10 06:53:28,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2025-01-10 06:53:28,312 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 120 flow. Second operand 4 states and 79 transitions. [2025-01-10 06:53:28,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 265 flow [2025-01-10 06:53:28,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:28,316 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 148 flow [2025-01-10 06:53:28,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2025-01-10 06:53:28,317 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2025-01-10 06:53:28,318 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 148 flow [2025-01-10 06:53:28,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:28,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:28,318 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:28,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:53:28,319 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:28,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2006543106, now seen corresponding path program 1 times [2025-01-10 06:53:28,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:28,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833818450] [2025-01-10 06:53:28,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:28,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:28,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:53:28,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:53:28,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:28,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:28,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:28,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833818450] [2025-01-10 06:53:28,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833818450] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:28,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35539106] [2025-01-10 06:53:28,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:28,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:28,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:28,378 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) [2025-01-10 06:53:28,380 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 [2025-01-10 06:53:28,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:53:28,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:53:28,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:28,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:28,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:53:28,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:28,461 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:28,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35539106] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:28,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:28,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2025-01-10 06:53:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127044322] [2025-01-10 06:53:28,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:28,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:28,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:28,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:53:28,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:28,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:28,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:28,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:28,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:28,548 INFO L124 PetriNetUnfolderBase]: 317/678 cut-off events. [2025-01-10 06:53:28,548 INFO L125 PetriNetUnfolderBase]: For 851/866 co-relation queries the response was YES. [2025-01-10 06:53:28,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 678 events. 317/678 cut-off events. For 851/866 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3350 event pairs, 72 based on Foata normal form. 36/693 useless extension candidates. Maximal degree in co-relation 1528. Up to 345 conditions per place. [2025-01-10 06:53:28,552 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 35 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2025-01-10 06:53:28,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 283 flow [2025-01-10 06:53:28,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:28,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2025-01-10 06:53:28,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2025-01-10 06:53:28,553 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 148 flow. Second operand 4 states and 71 transitions. [2025-01-10 06:53:28,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 283 flow [2025-01-10 06:53:28,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 275 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:53:28,555 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 179 flow [2025-01-10 06:53:28,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2025-01-10 06:53:28,556 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2025-01-10 06:53:28,556 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 179 flow [2025-01-10 06:53:28,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:28,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:28,556 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:28,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:28,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:28,760 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:28,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash 31159997, now seen corresponding path program 1 times [2025-01-10 06:53:28,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:28,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260153502] [2025-01-10 06:53:28,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:28,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:28,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:53:28,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:53:28,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:28,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:28,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:28,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260153502] [2025-01-10 06:53:28,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260153502] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:28,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:28,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:28,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420815564] [2025-01-10 06:53:28,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:28,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:28,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:28,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:28,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:28,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:53:28,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:28,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:28,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:53:28,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:28,924 INFO L124 PetriNetUnfolderBase]: 569/1119 cut-off events. [2025-01-10 06:53:28,925 INFO L125 PetriNetUnfolderBase]: For 1333/1365 co-relation queries the response was YES. [2025-01-10 06:53:28,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3167 conditions, 1119 events. 569/1119 cut-off events. For 1333/1365 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5793 event pairs, 298 based on Foata normal form. 31/1118 useless extension candidates. Maximal degree in co-relation 2898. Up to 688 conditions per place. [2025-01-10 06:53:28,929 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 62 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2025-01-10 06:53:28,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 519 flow [2025-01-10 06:53:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-01-10 06:53:28,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-01-10 06:53:28,930 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 179 flow. Second operand 4 states and 72 transitions. [2025-01-10 06:53:28,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 519 flow [2025-01-10 06:53:28,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:28,933 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 201 flow [2025-01-10 06:53:28,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2025-01-10 06:53:28,933 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2025-01-10 06:53:28,933 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 201 flow [2025-01-10 06:53:28,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:28,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:28,933 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:28,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:53:28,934 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:28,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash -152381979, now seen corresponding path program 1 times [2025-01-10 06:53:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:28,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999632280] [2025-01-10 06:53:28,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:28,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:53:28,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:53:28,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:28,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:28,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999632280] [2025-01-10 06:53:28,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999632280] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250481480] [2025-01-10 06:53:28,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:28,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:28,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:28,979 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) [2025-01-10 06:53:28,982 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 [2025-01-10 06:53:29,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:53:29,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:53:29,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:29,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:29,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:53:29,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:29,049 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:29,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250481480] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:29,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:29,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-01-10 06:53:29,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056403186] [2025-01-10 06:53:29,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:29,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:53:29,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:29,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:53:29,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:53:29,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:53:29,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:29,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:29,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:53:29,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:29,210 INFO L124 PetriNetUnfolderBase]: 537/1049 cut-off events. [2025-01-10 06:53:29,211 INFO L125 PetriNetUnfolderBase]: For 1537/1580 co-relation queries the response was YES. [2025-01-10 06:53:29,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3224 conditions, 1049 events. 537/1049 cut-off events. For 1537/1580 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5335 event pairs, 67 based on Foata normal form. 38/1049 useless extension candidates. Maximal degree in co-relation 2936. Up to 371 conditions per place. [2025-01-10 06:53:29,215 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 6 changer transitions 1/92 dead transitions. [2025-01-10 06:53:29,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 92 transitions, 631 flow [2025-01-10 06:53:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:53:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:53:29,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2025-01-10 06:53:29,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-01-10 06:53:29,217 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 201 flow. Second operand 6 states and 104 transitions. [2025-01-10 06:53:29,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 92 transitions, 631 flow [2025-01-10 06:53:29,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 92 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:29,219 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 206 flow [2025-01-10 06:53:29,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2025-01-10 06:53:29,220 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2025-01-10 06:53:29,220 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 206 flow [2025-01-10 06:53:29,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:29,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:29,220 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 06:53:29,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 06:53:29,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:29,425 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:29,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:29,426 INFO L85 PathProgramCache]: Analyzing trace with hash -428873796, now seen corresponding path program 1 times [2025-01-10 06:53:29,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473379145] [2025-01-10 06:53:29,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:29,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:29,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:53:29,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:53:29,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:29,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:29,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:29,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473379145] [2025-01-10 06:53:29,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473379145] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:29,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026101938] [2025-01-10 06:53:29,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:29,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:29,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:29,485 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) [2025-01-10 06:53:29,487 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 [2025-01-10 06:53:29,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:53:29,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:53:29,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:29,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:29,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:53:29,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:29,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:29,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026101938] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:29,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:29,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:53:29,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788047439] [2025-01-10 06:53:29,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:29,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:53:29,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:29,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:53:29,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:53:29,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:53:29,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 206 flow. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:29,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:29,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:53:29,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:29,947 INFO L124 PetriNetUnfolderBase]: 1193/2318 cut-off events. [2025-01-10 06:53:29,947 INFO L125 PetriNetUnfolderBase]: For 4256/4354 co-relation queries the response was YES. [2025-01-10 06:53:29,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 2318 events. 1193/2318 cut-off events. For 4256/4354 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 12683 event pairs, 191 based on Foata normal form. 114/2430 useless extension candidates. Maximal degree in co-relation 6625. Up to 820 conditions per place. [2025-01-10 06:53:29,958 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 152 selfloop transitions, 12 changer transitions 0/169 dead transitions. [2025-01-10 06:53:29,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 169 transitions, 1192 flow [2025-01-10 06:53:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:53:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:53:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2025-01-10 06:53:29,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5875 [2025-01-10 06:53:29,960 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 206 flow. Second operand 10 states and 188 transitions. [2025-01-10 06:53:29,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 169 transitions, 1192 flow [2025-01-10 06:53:29,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 169 transitions, 1165 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-01-10 06:53:29,966 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 275 flow [2025-01-10 06:53:29,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=275, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2025-01-10 06:53:29,966 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2025-01-10 06:53:29,966 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 275 flow [2025-01-10 06:53:29,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:29,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:29,967 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:29,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 06:53:30,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:30,168 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:30,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:30,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1561584478, now seen corresponding path program 1 times [2025-01-10 06:53:30,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:30,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564751393] [2025-01-10 06:53:30,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:30,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:30,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:53:30,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:53:30,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:30,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:30,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564751393] [2025-01-10 06:53:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564751393] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396484376] [2025-01-10 06:53:30,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:30,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:30,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:30,226 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) [2025-01-10 06:53:30,227 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 [2025-01-10 06:53:30,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:53:30,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:53:30,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:30,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:30,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:53:30,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:30,286 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:30,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396484376] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:30,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:30,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-01-10 06:53:30,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237961430] [2025-01-10 06:53:30,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:30,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 06:53:30,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:30,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 06:53:30,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:53:30,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:30,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2025-01-10 06:53:30,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:30,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:30,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:30,532 INFO L124 PetriNetUnfolderBase]: 1333/2678 cut-off events. [2025-01-10 06:53:30,533 INFO L125 PetriNetUnfolderBase]: For 6252/6350 co-relation queries the response was YES. [2025-01-10 06:53:30,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8790 conditions, 2678 events. 1333/2678 cut-off events. For 6252/6350 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15090 event pairs, 169 based on Foata normal form. 185/2862 useless extension candidates. Maximal degree in co-relation 8372. Up to 1059 conditions per place. [2025-01-10 06:53:30,549 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 86 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2025-01-10 06:53:30,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 100 transitions, 750 flow [2025-01-10 06:53:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:53:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:53:30,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-01-10 06:53:30,550 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.578125 [2025-01-10 06:53:30,550 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 275 flow. Second operand 6 states and 111 transitions. [2025-01-10 06:53:30,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 100 transitions, 750 flow [2025-01-10 06:53:30,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 730 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:30,558 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 333 flow [2025-01-10 06:53:30,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2025-01-10 06:53:30,558 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2025-01-10 06:53:30,558 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 333 flow [2025-01-10 06:53:30,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2025-01-10 06:53:30,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:30,559 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:30,565 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 [2025-01-10 06:53:30,759 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,SelfDestructingSolverStorable8 [2025-01-10 06:53:30,759 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:30,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:30,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1667432652, now seen corresponding path program 1 times [2025-01-10 06:53:30,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:30,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062962120] [2025-01-10 06:53:30,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:30,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:30,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:53:30,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:53:30,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:30,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:30,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:30,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062962120] [2025-01-10 06:53:30,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062962120] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:30,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:30,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:53:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446026651] [2025-01-10 06:53:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:30,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:53:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:30,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:53:30,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:53:30,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:30,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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) [2025-01-10 06:53:30,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:30,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:30,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:31,056 INFO L124 PetriNetUnfolderBase]: 1535/3181 cut-off events. [2025-01-10 06:53:31,057 INFO L125 PetriNetUnfolderBase]: For 7945/8037 co-relation queries the response was YES. [2025-01-10 06:53:31,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10716 conditions, 3181 events. 1535/3181 cut-off events. For 7945/8037 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18817 event pairs, 309 based on Foata normal form. 34/3214 useless extension candidates. Maximal degree in co-relation 10292. Up to 1781 conditions per place. [2025-01-10 06:53:31,072 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 87 selfloop transitions, 8 changer transitions 2/103 dead transitions. [2025-01-10 06:53:31,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 103 transitions, 818 flow [2025-01-10 06:53:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2025-01-10 06:53:31,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58125 [2025-01-10 06:53:31,074 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 333 flow. Second operand 5 states and 93 transitions. [2025-01-10 06:53:31,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 103 transitions, 818 flow [2025-01-10 06:53:31,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 811 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:31,084 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 399 flow [2025-01-10 06:53:31,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2025-01-10 06:53:31,084 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2025-01-10 06:53:31,084 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 399 flow [2025-01-10 06:53:31,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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) [2025-01-10 06:53:31,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:31,084 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2025-01-10 06:53:31,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-10 06:53:31,085 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:31,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1123997987, now seen corresponding path program 1 times [2025-01-10 06:53:31,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:31,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497854134] [2025-01-10 06:53:31,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:31,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:31,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:31,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:31,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:31,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:31,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497854134] [2025-01-10 06:53:31,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497854134] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175758581] [2025-01-10 06:53:31,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:31,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:31,130 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) [2025-01-10 06:53:31,132 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 [2025-01-10 06:53:31,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:31,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:31,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:31,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:31,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 06:53:31,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:31,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:31,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175758581] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:31,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:31,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-01-10 06:53:31,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108984940] [2025-01-10 06:53:31,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:31,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 06:53:31,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:31,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 06:53:31,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-01-10 06:53:31,234 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:31,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 399 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:31,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:31,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:31,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:31,824 INFO L124 PetriNetUnfolderBase]: 3070/6425 cut-off events. [2025-01-10 06:53:31,824 INFO L125 PetriNetUnfolderBase]: For 20202/20508 co-relation queries the response was YES. [2025-01-10 06:53:31,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21926 conditions, 6425 events. 3070/6425 cut-off events. For 20202/20508 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 44869 event pairs, 213 based on Foata normal form. 272/6696 useless extension candidates. Maximal degree in co-relation 21266. Up to 1285 conditions per place. [2025-01-10 06:53:31,858 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 186 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2025-01-10 06:53:31,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 226 transitions, 1826 flow [2025-01-10 06:53:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 06:53:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 06:53:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 239 transitions. [2025-01-10 06:53:31,860 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6789772727272727 [2025-01-10 06:53:31,860 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 399 flow. Second operand 11 states and 239 transitions. [2025-01-10 06:53:31,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 226 transitions, 1826 flow [2025-01-10 06:53:31,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 226 transitions, 1817 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:31,885 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 809 flow [2025-01-10 06:53:31,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=809, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2025-01-10 06:53:31,886 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2025-01-10 06:53:31,886 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 809 flow [2025-01-10 06:53:31,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:31,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:31,886 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:31,892 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 [2025-01-10 06:53:32,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-10 06:53:32,087 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:32,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1819868567, now seen corresponding path program 1 times [2025-01-10 06:53:32,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:32,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927878695] [2025-01-10 06:53:32,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:32,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:32,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:53:32,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:53:32,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:32,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:32,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:32,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927878695] [2025-01-10 06:53:32,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927878695] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:32,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482984016] [2025-01-10 06:53:32,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:32,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:32,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:32,150 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) [2025-01-10 06:53:32,151 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 [2025-01-10 06:53:32,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:53:32,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:53:32,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:32,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:32,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:53:32,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:32,217 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:32,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482984016] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:32,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:32,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-01-10 06:53:32,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618813576] [2025-01-10 06:53:32,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:32,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:53:32,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:32,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:53:32,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:53:32,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:53:32,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2025-01-10 06:53:32,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:32,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:53:32,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:32,819 INFO L124 PetriNetUnfolderBase]: 3520/6968 cut-off events. [2025-01-10 06:53:32,819 INFO L125 PetriNetUnfolderBase]: For 26427/26529 co-relation queries the response was YES. [2025-01-10 06:53:32,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25584 conditions, 6968 events. 3520/6968 cut-off events. For 26427/26529 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 47518 event pairs, 590 based on Foata normal form. 295/6967 useless extension candidates. Maximal degree in co-relation 24805. Up to 2159 conditions per place. [2025-01-10 06:53:32,914 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 218 selfloop transitions, 7 changer transitions 0/229 dead transitions. [2025-01-10 06:53:32,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 229 transitions, 3049 flow [2025-01-10 06:53:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:53:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:53:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2025-01-10 06:53:32,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-10 06:53:32,916 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 809 flow. Second operand 6 states and 96 transitions. [2025-01-10 06:53:32,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 229 transitions, 3049 flow [2025-01-10 06:53:32,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 229 transitions, 2784 flow, removed 131 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:32,952 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 747 flow [2025-01-10 06:53:32,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=747, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2025-01-10 06:53:32,952 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 50 predicate places. [2025-01-10 06:53:32,954 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 747 flow [2025-01-10 06:53:32,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2025-01-10 06:53:32,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:32,954 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:32,961 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 [2025-01-10 06:53:33,154 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,SelfDestructingSolverStorable11 [2025-01-10 06:53:33,155 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:33,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1494063929, now seen corresponding path program 1 times [2025-01-10 06:53:33,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:33,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255682950] [2025-01-10 06:53:33,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:33,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:33,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 06:53:33,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 06:53:33,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:33,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:33,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255682950] [2025-01-10 06:53:33,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255682950] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064135534] [2025-01-10 06:53:33,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:33,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:33,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:33,214 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) [2025-01-10 06:53:33,216 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 [2025-01-10 06:53:33,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 06:53:33,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 06:53:33,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:33,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:33,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:53:33,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:33,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:33,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:33,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064135534] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:33,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:33,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:53:33,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765535051] [2025-01-10 06:53:33,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:33,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:53:33,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:33,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:53:33,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:53:33,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:53:33,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 747 flow. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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) [2025-01-10 06:53:33,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:33,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:53:33,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:34,388 INFO L124 PetriNetUnfolderBase]: 5949/11435 cut-off events. [2025-01-10 06:53:34,389 INFO L125 PetriNetUnfolderBase]: For 40606/40868 co-relation queries the response was YES. [2025-01-10 06:53:34,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43525 conditions, 11435 events. 5949/11435 cut-off events. For 40606/40868 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 79454 event pairs, 1352 based on Foata normal form. 573/12007 useless extension candidates. Maximal degree in co-relation 42760. Up to 4015 conditions per place. [2025-01-10 06:53:34,463 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 382 selfloop transitions, 13 changer transitions 14/413 dead transitions. [2025-01-10 06:53:34,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 413 transitions, 5220 flow [2025-01-10 06:53:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:53:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:53:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2025-01-10 06:53:34,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.528125 [2025-01-10 06:53:34,465 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 747 flow. Second operand 10 states and 169 transitions. [2025-01-10 06:53:34,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 413 transitions, 5220 flow [2025-01-10 06:53:34,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 413 transitions, 5190 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-01-10 06:53:34,534 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 805 flow [2025-01-10 06:53:34,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=805, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2025-01-10 06:53:34,535 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2025-01-10 06:53:34,535 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 805 flow [2025-01-10 06:53:34,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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) [2025-01-10 06:53:34,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:34,536 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2025-01-10 06:53:34,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:34,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:34,741 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:34,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash -872807425, now seen corresponding path program 2 times [2025-01-10 06:53:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:34,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090031736] [2025-01-10 06:53:34,742 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:34,747 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-10 06:53:34,748 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-01-10 06:53:34,748 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:34,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-10 06:53:34,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090031736] [2025-01-10 06:53:34,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090031736] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575810374] [2025-01-10 06:53:34,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:34,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:34,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:34,774 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) [2025-01-10 06:53:34,777 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 [2025-01-10 06:53:34,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-10 06:53:34,809 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-01-10 06:53:34,809 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:34,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:34,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:53:34,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-10 06:53:34,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-10 06:53:34,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575810374] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:34,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:34,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-01-10 06:53:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934739907] [2025-01-10 06:53:34,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:34,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:53:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:34,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:53:34,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:53:34,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2025-01-10 06:53:34,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 805 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:34,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:34,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2025-01-10 06:53:34,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:35,836 INFO L124 PetriNetUnfolderBase]: 6616/12155 cut-off events. [2025-01-10 06:53:35,836 INFO L125 PetriNetUnfolderBase]: For 53301/53406 co-relation queries the response was YES. [2025-01-10 06:53:35,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46472 conditions, 12155 events. 6616/12155 cut-off events. For 53301/53406 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 80624 event pairs, 1676 based on Foata normal form. 526/12681 useless extension candidates. Maximal degree in co-relation 45286. Up to 4362 conditions per place. [2025-01-10 06:53:35,908 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 132 selfloop transitions, 13 changer transitions 0/148 dead transitions. [2025-01-10 06:53:35,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 148 transitions, 1651 flow [2025-01-10 06:53:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2025-01-10 06:53:35,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43125 [2025-01-10 06:53:35,909 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 805 flow. Second operand 5 states and 69 transitions. [2025-01-10 06:53:35,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 148 transitions, 1651 flow [2025-01-10 06:53:35,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 148 transitions, 1608 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-01-10 06:53:35,994 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 812 flow [2025-01-10 06:53:35,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=812, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2025-01-10 06:53:35,995 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 56 predicate places. [2025-01-10 06:53:35,995 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 812 flow [2025-01-10 06:53:35,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:35,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:35,998 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2025-01-10 06:53:36,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:36,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:36,199 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:36,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1138183840, now seen corresponding path program 2 times [2025-01-10 06:53:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:36,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205789761] [2025-01-10 06:53:36,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:36,204 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-01-10 06:53:36,213 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 06:53:36,214 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:53:36,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:36,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:36,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205789761] [2025-01-10 06:53:36,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205789761] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:36,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31994256] [2025-01-10 06:53:36,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:36,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:36,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:36,348 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:36,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 06:53:36,371 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-01-10 06:53:36,383 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 06:53:36,383 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:53:36,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:36,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-10 06:53:36,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:36,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:36,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31994256] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:36,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:36,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-01-10 06:53:36,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762665013] [2025-01-10 06:53:36,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:36,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 06:53:36,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:36,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 06:53:36,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2025-01-10 06:53:36,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:36,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 812 flow. Second operand has 21 states, 21 states have (on average 11.857142857142858) internal successors, (249), 21 states have internal predecessors, (249), 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) [2025-01-10 06:53:36,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:36,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:36,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:39,633 INFO L124 PetriNetUnfolderBase]: 15817/30472 cut-off events. [2025-01-10 06:53:39,633 INFO L125 PetriNetUnfolderBase]: For 191551/191895 co-relation queries the response was YES. [2025-01-10 06:53:39,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118053 conditions, 30472 events. 15817/30472 cut-off events. For 191551/191895 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 231087 event pairs, 1326 based on Foata normal form. 972/31441 useless extension candidates. Maximal degree in co-relation 116642. Up to 6233 conditions per place. [2025-01-10 06:53:39,824 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 510 selfloop transitions, 126 changer transitions 0/641 dead transitions. [2025-01-10 06:53:39,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 641 transitions, 5849 flow [2025-01-10 06:53:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 06:53:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-01-10 06:53:39,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 479 transitions. [2025-01-10 06:53:39,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7127976190476191 [2025-01-10 06:53:39,826 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 812 flow. Second operand 21 states and 479 transitions. [2025-01-10 06:53:39,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 641 transitions, 5849 flow [2025-01-10 06:53:40,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 641 transitions, 5747 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:53:40,035 INFO L231 Difference]: Finished difference. Result has 124 places, 174 transitions, 2380 flow [2025-01-10 06:53:40,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2380, PETRI_PLACES=124, PETRI_TRANSITIONS=174} [2025-01-10 06:53:40,036 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 91 predicate places. [2025-01-10 06:53:40,036 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 174 transitions, 2380 flow [2025-01-10 06:53:40,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.857142857142858) internal successors, (249), 21 states have internal predecessors, (249), 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) [2025-01-10 06:53:40,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:40,036 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:40,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 06:53:40,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:40,237 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:40,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1272977979, now seen corresponding path program 2 times [2025-01-10 06:53:40,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:40,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603705585] [2025-01-10 06:53:40,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:40,244 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-01-10 06:53:40,245 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 53 statements. [2025-01-10 06:53:40,246 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:40,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-01-10 06:53:40,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603705585] [2025-01-10 06:53:40,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603705585] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376380875] [2025-01-10 06:53:40,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:40,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:40,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:40,269 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:40,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 06:53:40,301 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-01-10 06:53:40,308 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 53 statements. [2025-01-10 06:53:40,308 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:40,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:40,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:53:40,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-01-10 06:53:40,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-01-10 06:53:40,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376380875] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:40,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:40,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-01-10 06:53:40,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282879839] [2025-01-10 06:53:40,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:40,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:53:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:40,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:53:40,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:53:40,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:53:40,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 174 transitions, 2380 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2025-01-10 06:53:40,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:40,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:53:40,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:43,854 INFO L124 PetriNetUnfolderBase]: 15817/30537 cut-off events. [2025-01-10 06:53:43,855 INFO L125 PetriNetUnfolderBase]: For 167270/167270 co-relation queries the response was YES. [2025-01-10 06:53:44,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121680 conditions, 30537 events. 15817/30537 cut-off events. For 167270/167270 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 233083 event pairs, 2860 based on Foata normal form. 706/31242 useless extension candidates. Maximal degree in co-relation 120150. Up to 9742 conditions per place. [2025-01-10 06:53:44,072 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 340 selfloop transitions, 16 changer transitions 6/366 dead transitions. [2025-01-10 06:53:44,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 366 transitions, 5981 flow [2025-01-10 06:53:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2025-01-10 06:53:44,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44375 [2025-01-10 06:53:44,074 INFO L175 Difference]: Start difference. First operand has 124 places, 174 transitions, 2380 flow. Second operand 5 states and 71 transitions. [2025-01-10 06:53:44,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 366 transitions, 5981 flow [2025-01-10 06:53:44,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 366 transitions, 5289 flow, removed 292 selfloop flow, removed 9 redundant places. [2025-01-10 06:53:44,546 INFO L231 Difference]: Finished difference. Result has 119 places, 173 transitions, 2133 flow [2025-01-10 06:53:44,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2133, PETRI_PLACES=119, PETRI_TRANSITIONS=173} [2025-01-10 06:53:44,546 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 86 predicate places. [2025-01-10 06:53:44,546 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 173 transitions, 2133 flow [2025-01-10 06:53:44,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2025-01-10 06:53:44,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:44,547 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1] [2025-01-10 06:53:44,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:44,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-10 06:53:44,748 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:44,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash -130771264, now seen corresponding path program 3 times [2025-01-10 06:53:44,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:44,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160073958] [2025-01-10 06:53:44,748 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:53:44,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:44,754 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 19 equivalence classes. [2025-01-10 06:53:44,785 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 95 of 95 statements. [2025-01-10 06:53:44,785 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-01-10 06:53:44,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:45,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:45,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160073958] [2025-01-10 06:53:45,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160073958] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:45,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987483403] [2025-01-10 06:53:45,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:53:45,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:45,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:45,204 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:45,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 06:53:45,236 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 19 equivalence classes. [2025-01-10 06:53:45,269 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 95 of 95 statements. [2025-01-10 06:53:45,270 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-01-10 06:53:45,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:45,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-10 06:53:45,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:45,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:45,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987483403] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:45,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:45,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2025-01-10 06:53:45,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886026207] [2025-01-10 06:53:45,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:45,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-10 06:53:45,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:45,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-10 06:53:45,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2025-01-10 06:53:45,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:45,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 173 transitions, 2133 flow. Second operand has 41 states, 41 states have (on average 11.926829268292684) internal successors, (489), 41 states have internal predecessors, (489), 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) [2025-01-10 06:53:45,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:45,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:45,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:53,988 INFO L124 PetriNetUnfolderBase]: 30402/60220 cut-off events. [2025-01-10 06:53:53,989 INFO L125 PetriNetUnfolderBase]: For 917932/917940 co-relation queries the response was YES. [2025-01-10 06:53:54,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246602 conditions, 60220 events. 30402/60220 cut-off events. For 917932/917940 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 474204 event pairs, 2703 based on Foata normal form. 1902/62119 useless extension candidates. Maximal degree in co-relation 244280. Up to 12107 conditions per place. [2025-01-10 06:53:54,464 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 971 selfloop transitions, 468 changer transitions 0/1443 dead transitions. [2025-01-10 06:53:54,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 1443 transitions, 15237 flow [2025-01-10 06:53:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-01-10 06:53:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2025-01-10 06:53:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 881 transitions. [2025-01-10 06:53:54,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6714939024390244 [2025-01-10 06:53:54,466 INFO L175 Difference]: Start difference. First operand has 119 places, 173 transitions, 2133 flow. Second operand 41 states and 881 transitions. [2025-01-10 06:53:54,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 1443 transitions, 15237 flow [2025-01-10 06:53:55,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 1443 transitions, 14498 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:53:55,040 INFO L231 Difference]: Finished difference. Result has 192 places, 515 transitions, 7751 flow [2025-01-10 06:53:55,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=7751, PETRI_PLACES=192, PETRI_TRANSITIONS=515} [2025-01-10 06:53:55,041 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 159 predicate places. [2025-01-10 06:53:55,041 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 515 transitions, 7751 flow [2025-01-10 06:53:55,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.926829268292684) internal successors, (489), 41 states have internal predecessors, (489), 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) [2025-01-10 06:53:55,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:55,041 INFO L206 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1] [2025-01-10 06:53:55,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 06:53:55,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 06:53:55,242 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:53:55,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash 983177600, now seen corresponding path program 4 times [2025-01-10 06:53:55,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:55,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125989275] [2025-01-10 06:53:55,243 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:53:55,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:55,250 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 195 statements into 2 equivalence classes. [2025-01-10 06:53:55,295 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 195 of 195 statements. [2025-01-10 06:53:55,296 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:53:55,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:56,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:56,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125989275] [2025-01-10 06:53:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125989275] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:56,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696647729] [2025-01-10 06:53:56,759 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:53:56,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:56,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:56,761 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:56,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 06:53:56,797 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 195 statements into 2 equivalence classes. [2025-01-10 06:53:56,848 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 195 of 195 statements. [2025-01-10 06:53:56,848 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:53:56,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:56,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-01-10 06:53:56,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:57,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:58,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696647729] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:58,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:58,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 79 [2025-01-10 06:53:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108166568] [2025-01-10 06:53:58,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:58,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2025-01-10 06:53:58,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:58,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2025-01-10 06:53:58,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2025-01-10 06:53:58,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:53:58,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 515 transitions, 7751 flow. Second operand has 81 states, 81 states have (on average 11.962962962962964) internal successors, (969), 81 states have internal predecessors, (969), 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) [2025-01-10 06:53:58,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:58,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:53:58,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand