./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-channel-sum.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 bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:11:16,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:11:16,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:11:16,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:11:16,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:11:16,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:11:16,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:11:16,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:11:16,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:11:16,617 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:11:16,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:11:16,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:11:16,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:11:16,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:11:16,619 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:11:16,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:11:16,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:11:16,620 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:11:16,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:11:16,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:11:16,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:11:16,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:11:16,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:11:16,621 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:11:16,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:11:16,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:11:16,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:11:16,622 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:11:16,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:11:16,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:11:16,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:11:16,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:11:16,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:11:16,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:11:16,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:11:16,622 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 -> bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 [2025-02-08 14:11:16,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:11:16,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:11:16,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:11:16,914 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:11:16,915 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:11:16,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2025-02-08 14:11:18,229 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88ca452d1/6e1f7c4cbe1f4190897724ff7a16c60a/FLAG708ed6c6a [2025-02-08 14:11:18,493 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:11:18,493 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2025-02-08 14:11:18,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88ca452d1/6e1f7c4cbe1f4190897724ff7a16c60a/FLAG708ed6c6a [2025-02-08 14:11:18,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88ca452d1/6e1f7c4cbe1f4190897724ff7a16c60a [2025-02-08 14:11:18,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:11:18,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:11:18,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:11:18,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:11:18,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:11:18,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24302769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18, skipping insertion in model container [2025-02-08 14:11:18,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,540 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:11:18,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:11:18,711 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:11:18,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:11:18,743 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:11:18,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18 WrapperNode [2025-02-08 14:11:18,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:11:18,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:11:18,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:11:18,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:11:18,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,773 INFO L138 Inliner]: procedures = 21, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 140 [2025-02-08 14:11:18,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:11:18,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:11:18,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:11:18,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:11:18,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,794 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 14:11:18,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,803 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:11:18,811 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:11:18,811 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:11:18,811 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:11:18,812 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (1/1) ... [2025-02-08 14:11:18,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:11:18,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:18,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:11:18,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:11:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:11:18,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:11:18,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:11:18,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:11:18,868 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:11:18,954 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:11:18,956 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:11:19,223 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:11:19,224 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:11:19,406 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:11:19,406 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:11:19,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:11:19 BoogieIcfgContainer [2025-02-08 14:11:19,407 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:11:19,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:11:19,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:11:19,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:11:19,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:11:18" (1/3) ... [2025-02-08 14:11:19,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bb35f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:11:19, skipping insertion in model container [2025-02-08 14:11:19,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:18" (2/3) ... [2025-02-08 14:11:19,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bb35f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:11:19, skipping insertion in model container [2025-02-08 14:11:19,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:11:19" (3/3) ... [2025-02-08 14:11:19,418 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2025-02-08 14:11:19,430 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:11:19,432 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-channel-sum.wvr.c that has 3 procedures, 44 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-02-08 14:11:19,432 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:11:19,506 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:11:19,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2025-02-08 14:11:19,585 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-02-08 14:11:19,587 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:11:19,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 107 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-08 14:11:19,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2025-02-08 14:11:19,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2025-02-08 14:11:19,602 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:11:19,614 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;@56f1b7cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:11:19,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-08 14:11:19,621 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:11:19,621 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2025-02-08 14:11:19,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:11:19,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:19,622 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:19,622 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:19,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash 598583729, now seen corresponding path program 1 times [2025-02-08 14:11:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:19,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923266929] [2025-02-08 14:11:19,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:19,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:19,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:19,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:19,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:19,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:19,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923266929] [2025-02-08 14:11:19,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923266929] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:19,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:19,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:19,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26154915] [2025-02-08 14:11:19,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:19,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:19,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:19,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:19,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-08 14:11:19,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:19,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:19,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-08 14:11:20,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:20,260 INFO L124 PetriNetUnfolderBase]: 368/644 cut-off events. [2025-02-08 14:11:20,260 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-02-08 14:11:20,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 644 events. 368/644 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3002 event pairs, 277 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 1143. Up to 570 conditions per place. [2025-02-08 14:11:20,270 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2025-02-08 14:11:20,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 173 flow [2025-02-08 14:11:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-02-08 14:11:20,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.453125 [2025-02-08 14:11:20,285 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 87 transitions. [2025-02-08 14:11:20,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 173 flow [2025-02-08 14:11:20,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:20,295 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 119 flow [2025-02-08 14:11:20,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2025-02-08 14:11:20,302 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-02-08 14:11:20,302 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 119 flow [2025-02-08 14:11:20,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:20,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:20,303 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:20,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:11:20,303 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:20,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash -296016314, now seen corresponding path program 1 times [2025-02-08 14:11:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918236123] [2025-02-08 14:11:20,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:20,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:20,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:20,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:20,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:20,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:20,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918236123] [2025-02-08 14:11:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918236123] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287192174] [2025-02-08 14:11:20,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:20,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:20,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:20,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:20,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:11:20,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:20,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:20,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:20,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:20,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:20,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:20,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:20,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287192174] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:20,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:20,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:11:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403623559] [2025-02-08 14:11:20,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:20,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:11:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:20,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:11:20,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:11:20,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-08 14:11:20,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:20,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:20,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-08 14:11:20,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:20,775 INFO L124 PetriNetUnfolderBase]: 368/643 cut-off events. [2025-02-08 14:11:20,775 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-08 14:11:20,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 643 events. 368/643 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3011 event pairs, 277 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 1217. Up to 565 conditions per place. [2025-02-08 14:11:20,783 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 28 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2025-02-08 14:11:20,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 185 flow [2025-02-08 14:11:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:11:20,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:11:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-02-08 14:11:20,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-02-08 14:11:20,786 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 119 flow. Second operand 6 states and 108 transitions. [2025-02-08 14:11:20,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 185 flow [2025-02-08 14:11:20,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:20,789 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 126 flow [2025-02-08 14:11:20,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2025-02-08 14:11:20,790 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-02-08 14:11:20,790 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 126 flow [2025-02-08 14:11:20,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:20,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:20,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:20,800 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 [2025-02-08 14:11:20,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:20,995 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:20,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:20,996 INFO L85 PathProgramCache]: Analyzing trace with hash -293311563, now seen corresponding path program 1 times [2025-02-08 14:11:20,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:20,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44524946] [2025-02-08 14:11:20,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:20,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:21,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:21,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:21,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:21,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:21,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44524946] [2025-02-08 14:11:21,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44524946] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:21,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:21,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:21,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830524123] [2025-02-08 14:11:21,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:21,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:21,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:21,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:21,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:21,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-08 14:11:21,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:21,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:21,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-08 14:11:21,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:21,206 INFO L124 PetriNetUnfolderBase]: 364/661 cut-off events. [2025-02-08 14:11:21,206 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2025-02-08 14:11:21,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 661 events. 364/661 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2938 event pairs, 160 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 1274. Up to 432 conditions per place. [2025-02-08 14:11:21,213 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 41 selfloop transitions, 6 changer transitions 2/60 dead transitions. [2025-02-08 14:11:21,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 255 flow [2025-02-08 14:11:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2025-02-08 14:11:21,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2025-02-08 14:11:21,216 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 126 flow. Second operand 3 states and 89 transitions. [2025-02-08 14:11:21,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 255 flow [2025-02-08 14:11:21,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 233 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-08 14:11:21,221 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 142 flow [2025-02-08 14:11:21,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2025-02-08 14:11:21,222 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2025-02-08 14:11:21,223 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 142 flow [2025-02-08 14:11:21,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:21,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:21,223 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:21,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:11:21,224 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:21,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:21,224 INFO L85 PathProgramCache]: Analyzing trace with hash -586570815, now seen corresponding path program 1 times [2025-02-08 14:11:21,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:21,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336835706] [2025-02-08 14:11:21,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:21,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:21,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:11:21,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:11:21,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:21,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:21,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:21,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336835706] [2025-02-08 14:11:21,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336835706] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:21,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593980382] [2025-02-08 14:11:21,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:21,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:21,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:21,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:21,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:11:21,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:11:21,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:11:21,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:21,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:21,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:21,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:21,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:21,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593980382] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:21,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:21,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:11:21,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504534522] [2025-02-08 14:11:21,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:21,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:11:21,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:21,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:11:21,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:11:21,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-08 14:11:21,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 142 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:21,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:21,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-08 14:11:21,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:21,723 INFO L124 PetriNetUnfolderBase]: 367/745 cut-off events. [2025-02-08 14:11:21,723 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2025-02-08 14:11:21,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 745 events. 367/745 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3601 event pairs, 256 based on Foata normal form. 3/587 useless extension candidates. Maximal degree in co-relation 1568. Up to 620 conditions per place. [2025-02-08 14:11:21,729 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 34 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2025-02-08 14:11:21,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 266 flow [2025-02-08 14:11:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2025-02-08 14:11:21,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34791666666666665 [2025-02-08 14:11:21,731 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 142 flow. Second operand 10 states and 167 transitions. [2025-02-08 14:11:21,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 266 flow [2025-02-08 14:11:21,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:21,737 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 204 flow [2025-02-08 14:11:21,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2025-02-08 14:11:21,737 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-02-08 14:11:21,739 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 204 flow [2025-02-08 14:11:21,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:21,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:21,739 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:21,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:11:21,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:21,943 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:21,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:21,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1531363940, now seen corresponding path program 1 times [2025-02-08 14:11:21,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:21,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033852819] [2025-02-08 14:11:21,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:21,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:21,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:11:21,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:11:21,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:21,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:22,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033852819] [2025-02-08 14:11:22,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033852819] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:22,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:22,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:22,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858095936] [2025-02-08 14:11:22,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:22,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:22,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:22,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:22,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:22,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-08 14:11:22,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:22,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:22,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-08 14:11:22,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:22,123 INFO L124 PetriNetUnfolderBase]: 315/590 cut-off events. [2025-02-08 14:11:22,123 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2025-02-08 14:11:22,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 590 events. 315/590 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2692 event pairs, 112 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 1289. Up to 474 conditions per place. [2025-02-08 14:11:22,127 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 46 selfloop transitions, 3 changer transitions 2/62 dead transitions. [2025-02-08 14:11:22,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 319 flow [2025-02-08 14:11:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:22,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-02-08 14:11:22,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-08 14:11:22,128 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 204 flow. Second operand 3 states and 80 transitions. [2025-02-08 14:11:22,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 319 flow [2025-02-08 14:11:22,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 308 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:22,131 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 202 flow [2025-02-08 14:11:22,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2025-02-08 14:11:22,133 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2025-02-08 14:11:22,134 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 202 flow [2025-02-08 14:11:22,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:22,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:22,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:22,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:11:22,134 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:22,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1531363941, now seen corresponding path program 1 times [2025-02-08 14:11:22,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:22,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193938778] [2025-02-08 14:11:22,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:22,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:22,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:11:22,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:11:22,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:22,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:22,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193938778] [2025-02-08 14:11:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193938778] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:11:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83819019] [2025-02-08 14:11:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:22,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:22,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:22,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:22,249 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-08 14:11:22,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:22,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:22,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-08 14:11:22,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:22,399 INFO L124 PetriNetUnfolderBase]: 337/659 cut-off events. [2025-02-08 14:11:22,399 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-02-08 14:11:22,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 659 events. 337/659 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3029 event pairs, 245 based on Foata normal form. 5/542 useless extension candidates. Maximal degree in co-relation 1454. Up to 538 conditions per place. [2025-02-08 14:11:22,405 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 3 changer transitions 11/66 dead transitions. [2025-02-08 14:11:22,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 338 flow [2025-02-08 14:11:22,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-02-08 14:11:22,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515625 [2025-02-08 14:11:22,407 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 202 flow. Second operand 4 states and 99 transitions. [2025-02-08 14:11:22,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 338 flow [2025-02-08 14:11:22,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:22,412 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 206 flow [2025-02-08 14:11:22,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2025-02-08 14:11:22,413 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2025-02-08 14:11:22,413 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 206 flow [2025-02-08 14:11:22,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:22,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:22,414 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:22,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:11:22,414 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:22,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:22,415 INFO L85 PathProgramCache]: Analyzing trace with hash 734323760, now seen corresponding path program 1 times [2025-02-08 14:11:22,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:22,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669737174] [2025-02-08 14:11:22,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:22,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:22,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:11:22,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:11:22,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:22,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669737174] [2025-02-08 14:11:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669737174] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102958683] [2025-02-08 14:11:22,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:22,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:22,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:22,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:22,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:11:22,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:11:22,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:11:22,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:22,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:22,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:11:22,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:22,707 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102958683] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:22,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:22,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:11:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497605676] [2025-02-08 14:11:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:22,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:22,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:22,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:22,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:11:22,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-08 14:11:22,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:22,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:22,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-08 14:11:22,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:22,830 INFO L124 PetriNetUnfolderBase]: 255/504 cut-off events. [2025-02-08 14:11:22,830 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2025-02-08 14:11:22,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 504 events. 255/504 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2195 event pairs, 107 based on Foata normal form. 40/439 useless extension candidates. Maximal degree in co-relation 1113. Up to 292 conditions per place. [2025-02-08 14:11:22,835 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 39 selfloop transitions, 8 changer transitions 4/62 dead transitions. [2025-02-08 14:11:22,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 329 flow [2025-02-08 14:11:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-02-08 14:11:22,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.484375 [2025-02-08 14:11:22,837 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 206 flow. Second operand 4 states and 93 transitions. [2025-02-08 14:11:22,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 329 flow [2025-02-08 14:11:22,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 319 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:22,839 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 204 flow [2025-02-08 14:11:22,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2025-02-08 14:11:22,843 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2025-02-08 14:11:22,843 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 204 flow [2025-02-08 14:11:22,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:22,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:22,843 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:22,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:11:23,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:23,045 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:23,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:23,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1150716426, now seen corresponding path program 2 times [2025-02-08 14:11:23,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:23,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614139776] [2025-02-08 14:11:23,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:23,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:23,056 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 14:11:23,062 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-02-08 14:11:23,062 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:23,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:23,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614139776] [2025-02-08 14:11:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614139776] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215734270] [2025-02-08 14:11:23,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:23,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:23,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:23,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:11:23,151 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 14:11:23,161 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-02-08 14:11:23,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:23,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:23,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:11:23,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:23,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:23,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215734270] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:23,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:23,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:11:23,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910141414] [2025-02-08 14:11:23,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:23,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:23,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:23,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:23,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:23,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-08 14:11:23,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:23,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:23,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-08 14:11:23,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:23,343 INFO L124 PetriNetUnfolderBase]: 228/461 cut-off events. [2025-02-08 14:11:23,344 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2025-02-08 14:11:23,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 461 events. 228/461 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1930 event pairs, 157 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1056. Up to 389 conditions per place. [2025-02-08 14:11:23,348 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 26 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2025-02-08 14:11:23,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 276 flow [2025-02-08 14:11:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:23,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-08 14:11:23,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2025-02-08 14:11:23,350 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 204 flow. Second operand 4 states and 76 transitions. [2025-02-08 14:11:23,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 276 flow [2025-02-08 14:11:23,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 250 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-02-08 14:11:23,353 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 198 flow [2025-02-08 14:11:23,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2025-02-08 14:11:23,353 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2025-02-08 14:11:23,353 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 198 flow [2025-02-08 14:11:23,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:23,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:23,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:23,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:11:23,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-08 14:11:23,554 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:23,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:23,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1871353902, now seen corresponding path program 1 times [2025-02-08 14:11:23,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:23,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108400821] [2025-02-08 14:11:23,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:23,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:23,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:11:23,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:11:23,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:23,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:23,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:23,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108400821] [2025-02-08 14:11:23,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108400821] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:23,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:23,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:23,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395835168] [2025-02-08 14:11:23,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:23,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:23,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:23,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:23,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:23,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-08 14:11:23,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:23,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:23,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-08 14:11:23,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:23,715 INFO L124 PetriNetUnfolderBase]: 239/534 cut-off events. [2025-02-08 14:11:23,715 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2025-02-08 14:11:23,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 534 events. 239/534 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2324 event pairs, 65 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1070. Up to 273 conditions per place. [2025-02-08 14:11:23,718 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 49 selfloop transitions, 3 changer transitions 2/64 dead transitions. [2025-02-08 14:11:23,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 347 flow [2025-02-08 14:11:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2025-02-08 14:11:23,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-08 14:11:23,719 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 198 flow. Second operand 3 states and 81 transitions. [2025-02-08 14:11:23,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 347 flow [2025-02-08 14:11:23,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 317 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:23,721 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 181 flow [2025-02-08 14:11:23,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-02-08 14:11:23,721 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2025-02-08 14:11:23,721 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 181 flow [2025-02-08 14:11:23,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:23,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:23,722 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:23,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:11:23,722 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:23,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1871353901, now seen corresponding path program 1 times [2025-02-08 14:11:23,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:23,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240337980] [2025-02-08 14:11:23,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:23,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:23,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:11:23,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:11:23,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:23,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:23,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240337980] [2025-02-08 14:11:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240337980] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158529950] [2025-02-08 14:11:23,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:23,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:23,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:23,911 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:23,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:11:23,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:11:23,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:11:23,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:23,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:23,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:23,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:24,052 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:24,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158529950] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:24,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:24,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-02-08 14:11:24,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720471837] [2025-02-08 14:11:24,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:24,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:11:24,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:24,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:11:24,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:11:24,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-08 14:11:24,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2025-02-08 14:11:24,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:24,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-08 14:11:24,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:24,245 INFO L124 PetriNetUnfolderBase]: 299/650 cut-off events. [2025-02-08 14:11:24,245 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-02-08 14:11:24,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 650 events. 299/650 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2937 event pairs, 50 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 1356. Up to 210 conditions per place. [2025-02-08 14:11:24,249 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 63 selfloop transitions, 11 changer transitions 4/88 dead transitions. [2025-02-08 14:11:24,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 436 flow [2025-02-08 14:11:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:11:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:11:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2025-02-08 14:11:24,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2025-02-08 14:11:24,252 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 181 flow. Second operand 6 states and 149 transitions. [2025-02-08 14:11:24,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 436 flow [2025-02-08 14:11:24,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:24,254 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 233 flow [2025-02-08 14:11:24,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2025-02-08 14:11:24,256 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-02-08 14:11:24,256 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 233 flow [2025-02-08 14:11:24,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2025-02-08 14:11:24,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:24,256 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:24,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 14:11:24,457 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,SelfDestructingSolverStorable9 [2025-02-08 14:11:24,457 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:24,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash 151163058, now seen corresponding path program 1 times [2025-02-08 14:11:24,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:24,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295413089] [2025-02-08 14:11:24,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:24,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:24,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 14:11:24,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:11:24,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:24,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:25,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:25,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295413089] [2025-02-08 14:11:25,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295413089] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:25,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361848156] [2025-02-08 14:11:25,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:25,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:25,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:25,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:25,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 14:11:25,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 14:11:25,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:11:25,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:25,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:25,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 14:11:25,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:25,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-08 14:11:25,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-08 14:11:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:25,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:25,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2025-02-08 14:11:25,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-02-08 14:11:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361848156] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:26,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:26,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 25 [2025-02-08 14:11:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532580987] [2025-02-08 14:11:26,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:26,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-08 14:11:26,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:26,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-08 14:11:26,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2025-02-08 14:11:26,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-02-08 14:11:26,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 233 flow. Second operand has 27 states, 27 states have (on average 10.925925925925926) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:26,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:26,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-02-08 14:11:26,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:28,413 INFO L124 PetriNetUnfolderBase]: 1185/2274 cut-off events. [2025-02-08 14:11:28,413 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2025-02-08 14:11:28,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 2274 events. 1185/2274 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13754 event pairs, 160 based on Foata normal form. 10/2062 useless extension candidates. Maximal degree in co-relation 4861. Up to 400 conditions per place. [2025-02-08 14:11:28,428 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 186 selfloop transitions, 54 changer transitions 27/274 dead transitions. [2025-02-08 14:11:28,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 274 transitions, 1468 flow [2025-02-08 14:11:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-08 14:11:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-08 14:11:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 525 transitions. [2025-02-08 14:11:28,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2025-02-08 14:11:28,433 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 233 flow. Second operand 30 states and 525 transitions. [2025-02-08 14:11:28,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 274 transitions, 1468 flow [2025-02-08 14:11:28,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 274 transitions, 1463 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:28,441 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 644 flow [2025-02-08 14:11:28,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=644, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2025-02-08 14:11:28,442 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2025-02-08 14:11:28,442 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 644 flow [2025-02-08 14:11:28,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.925925925925926) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:28,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:28,443 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:28,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:11:28,648 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,SelfDestructingSolverStorable10 [2025-02-08 14:11:28,648 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:28,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:28,649 INFO L85 PathProgramCache]: Analyzing trace with hash 145243632, now seen corresponding path program 1 times [2025-02-08 14:11:28,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:28,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78075604] [2025-02-08 14:11:28,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:28,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:28,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 14:11:28,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 14:11:28,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:28,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:11:28,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78075604] [2025-02-08 14:11:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78075604] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:28,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:28,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:28,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313655062] [2025-02-08 14:11:28,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:28,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:28,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:28,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:28,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:28,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-02-08 14:11:28,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:28,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:28,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-02-08 14:11:28,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:28,979 INFO L124 PetriNetUnfolderBase]: 892/1837 cut-off events. [2025-02-08 14:11:28,979 INFO L125 PetriNetUnfolderBase]: For 4024/4041 co-relation queries the response was YES. [2025-02-08 14:11:28,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6192 conditions, 1837 events. 892/1837 cut-off events. For 4024/4041 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11266 event pairs, 370 based on Foata normal form. 6/1842 useless extension candidates. Maximal degree in co-relation 6056. Up to 1454 conditions per place. [2025-02-08 14:11:28,997 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 86 selfloop transitions, 2 changer transitions 7/106 dead transitions. [2025-02-08 14:11:28,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 106 transitions, 932 flow [2025-02-08 14:11:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2025-02-08 14:11:28,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-08 14:11:28,998 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 644 flow. Second operand 3 states and 81 transitions. [2025-02-08 14:11:28,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 106 transitions, 932 flow [2025-02-08 14:11:29,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 871 flow, removed 19 selfloop flow, removed 8 redundant places. [2025-02-08 14:11:29,021 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 522 flow [2025-02-08 14:11:29,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2025-02-08 14:11:29,022 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2025-02-08 14:11:29,022 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 522 flow [2025-02-08 14:11:29,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:29,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:29,023 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:29,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 14:11:29,024 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:29,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:29,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1280786411, now seen corresponding path program 1 times [2025-02-08 14:11:29,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:29,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601511144] [2025-02-08 14:11:29,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:29,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:29,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 14:11:29,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:11:29,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:29,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:29,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:29,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601511144] [2025-02-08 14:11:29,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601511144] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:29,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:29,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:11:29,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396697924] [2025-02-08 14:11:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:29,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:29,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:29,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:29,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:29,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-08 14:11:29,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:29,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:29,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-08 14:11:29,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:29,454 INFO L124 PetriNetUnfolderBase]: 1431/2889 cut-off events. [2025-02-08 14:11:29,455 INFO L125 PetriNetUnfolderBase]: For 6158/6218 co-relation queries the response was YES. [2025-02-08 14:11:29,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9784 conditions, 2889 events. 1431/2889 cut-off events. For 6158/6218 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 18322 event pairs, 398 based on Foata normal form. 32/2898 useless extension candidates. Maximal degree in co-relation 8740. Up to 1046 conditions per place. [2025-02-08 14:11:29,481 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 92 selfloop transitions, 26 changer transitions 3/134 dead transitions. [2025-02-08 14:11:29,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 1118 flow [2025-02-08 14:11:29,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:29,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-08 14:11:29,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-02-08 14:11:29,483 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 522 flow. Second operand 4 states and 110 transitions. [2025-02-08 14:11:29,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 1118 flow [2025-02-08 14:11:29,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 134 transitions, 1116 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:29,499 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 819 flow [2025-02-08 14:11:29,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=819, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2025-02-08 14:11:29,501 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 55 predicate places. [2025-02-08 14:11:29,501 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 819 flow [2025-02-08 14:11:29,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:29,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:29,502 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:29,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 14:11:29,502 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:29,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash 576928139, now seen corresponding path program 1 times [2025-02-08 14:11:29,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:29,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815684284] [2025-02-08 14:11:29,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:29,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:29,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:11:29,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:11:29,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:29,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:30,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815684284] [2025-02-08 14:11:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815684284] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267873454] [2025-02-08 14:11:30,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:30,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:30,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:30,491 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:30,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 14:11:30,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:11:30,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:11:30,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:30,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:30,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 14:11:30,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:30,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:30,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:11:30,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-02-08 14:11:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:11:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267873454] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:30,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 14:11:30,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 6] total 22 [2025-02-08 14:11:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172297127] [2025-02-08 14:11:30,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:30,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:11:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:30,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:11:30,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2025-02-08 14:11:30,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-08 14:11:30,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 819 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:30,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:30,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-08 14:11:30,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:31,304 INFO L124 PetriNetUnfolderBase]: 1720/3391 cut-off events. [2025-02-08 14:11:31,304 INFO L125 PetriNetUnfolderBase]: For 9587/9611 co-relation queries the response was YES. [2025-02-08 14:11:31,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12414 conditions, 3391 events. 1720/3391 cut-off events. For 9587/9611 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 21659 event pairs, 242 based on Foata normal form. 42/3392 useless extension candidates. Maximal degree in co-relation 11146. Up to 1567 conditions per place. [2025-02-08 14:11:31,336 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 116 selfloop transitions, 18 changer transitions 5/150 dead transitions. [2025-02-08 14:11:31,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 150 transitions, 1467 flow [2025-02-08 14:11:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:11:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:11:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2025-02-08 14:11:31,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-08 14:11:31,338 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 819 flow. Second operand 7 states and 154 transitions. [2025-02-08 14:11:31,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 150 transitions, 1467 flow [2025-02-08 14:11:31,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 150 transitions, 1455 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-02-08 14:11:31,362 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 892 flow [2025-02-08 14:11:31,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2025-02-08 14:11:31,362 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2025-02-08 14:11:31,362 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 892 flow [2025-02-08 14:11:31,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:31,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:31,363 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:31,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 14:11:31,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:31,563 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:31,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:31,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1963268306, now seen corresponding path program 2 times [2025-02-08 14:11:31,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:31,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926650890] [2025-02-08 14:11:31,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:31,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:31,571 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-08 14:11:31,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:11:31,582 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:11:31,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:11:31,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:31,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926650890] [2025-02-08 14:11:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926650890] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:31,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:31,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:11:31,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181761280] [2025-02-08 14:11:31,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:31,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:11:31,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:31,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:11:31,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:11:31,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-02-08 14:11:31,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 892 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:31,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:31,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-02-08 14:11:31,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:32,133 INFO L124 PetriNetUnfolderBase]: 1735/3464 cut-off events. [2025-02-08 14:11:32,133 INFO L125 PetriNetUnfolderBase]: For 11885/11933 co-relation queries the response was YES. [2025-02-08 14:11:32,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13593 conditions, 3464 events. 1735/3464 cut-off events. For 11885/11933 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 21479 event pairs, 145 based on Foata normal form. 46/3477 useless extension candidates. Maximal degree in co-relation 11686. Up to 777 conditions per place. [2025-02-08 14:11:32,166 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 135 selfloop transitions, 22 changer transitions 4/173 dead transitions. [2025-02-08 14:11:32,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 173 transitions, 1764 flow [2025-02-08 14:11:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:11:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:11:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2025-02-08 14:11:32,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-02-08 14:11:32,169 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 892 flow. Second operand 8 states and 188 transitions. [2025-02-08 14:11:32,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 173 transitions, 1764 flow [2025-02-08 14:11:32,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 173 transitions, 1709 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:32,207 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 927 flow [2025-02-08 14:11:32,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=927, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2025-02-08 14:11:32,208 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2025-02-08 14:11:32,208 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 927 flow [2025-02-08 14:11:32,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:32,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:32,209 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:32,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 14:11:32,209 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:32,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:32,210 INFO L85 PathProgramCache]: Analyzing trace with hash 771772310, now seen corresponding path program 1 times [2025-02-08 14:11:32,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:32,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780365600] [2025-02-08 14:11:32,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:32,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:32,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 14:11:32,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:11:32,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:32,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:32,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:32,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780365600] [2025-02-08 14:11:32,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780365600] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221595913] [2025-02-08 14:11:32,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:32,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:32,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:32,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:32,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 14:11:32,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 14:11:32,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:11:32,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:32,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:32,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:11:32,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:32,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:32,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221595913] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:32,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2025-02-08 14:11:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567399833] [2025-02-08 14:11:32,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:32,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 14:11:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:32,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 14:11:32,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2025-02-08 14:11:32,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-08 14:11:32,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 927 flow. Second operand has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:32,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:32,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-08 14:11:32,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:33,298 INFO L124 PetriNetUnfolderBase]: 1126/2372 cut-off events. [2025-02-08 14:11:33,298 INFO L125 PetriNetUnfolderBase]: For 9251/9263 co-relation queries the response was YES. [2025-02-08 14:11:33,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9072 conditions, 2372 events. 1126/2372 cut-off events. For 9251/9263 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13545 event pairs, 392 based on Foata normal form. 11/2354 useless extension candidates. Maximal degree in co-relation 8879. Up to 895 conditions per place. [2025-02-08 14:11:33,314 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 52 selfloop transitions, 22 changer transitions 27/114 dead transitions. [2025-02-08 14:11:33,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1025 flow [2025-02-08 14:11:33,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:11:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:11:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2025-02-08 14:11:33,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36217948717948717 [2025-02-08 14:11:33,317 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 927 flow. Second operand 13 states and 226 transitions. [2025-02-08 14:11:33,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1025 flow [2025-02-08 14:11:33,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 114 transitions, 940 flow, removed 22 selfloop flow, removed 11 redundant places. [2025-02-08 14:11:33,335 INFO L231 Difference]: Finished difference. Result has 113 places, 74 transitions, 584 flow [2025-02-08 14:11:33,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=113, PETRI_TRANSITIONS=74} [2025-02-08 14:11:33,336 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2025-02-08 14:11:33,336 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 74 transitions, 584 flow [2025-02-08 14:11:33,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:33,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:33,336 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:33,344 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 [2025-02-08 14:11:33,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 14:11:33,537 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:33,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1148029781, now seen corresponding path program 2 times [2025-02-08 14:11:33,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:33,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128542029] [2025-02-08 14:11:33,538 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:33,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:33,546 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-08 14:11:33,549 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 34 statements. [2025-02-08 14:11:33,550 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:33,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-08 14:11:33,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128542029] [2025-02-08 14:11:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128542029] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:11:33,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443328369] [2025-02-08 14:11:33,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:33,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:11:33,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:33,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:11:33,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:11:33,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-08 14:11:33,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 74 transitions, 584 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:33,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:33,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-08 14:11:33,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:33,839 INFO L124 PetriNetUnfolderBase]: 1073/2135 cut-off events. [2025-02-08 14:11:33,839 INFO L125 PetriNetUnfolderBase]: For 9107/9163 co-relation queries the response was YES. [2025-02-08 14:11:33,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8386 conditions, 2135 events. 1073/2135 cut-off events. For 9107/9163 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11880 event pairs, 334 based on Foata normal form. 188/2311 useless extension candidates. Maximal degree in co-relation 8118. Up to 956 conditions per place. [2025-02-08 14:11:33,853 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 64 selfloop transitions, 20 changer transitions 0/97 dead transitions. [2025-02-08 14:11:33,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 97 transitions, 903 flow [2025-02-08 14:11:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:11:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:11:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2025-02-08 14:11:33,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2025-02-08 14:11:33,855 INFO L175 Difference]: Start difference. First operand has 113 places, 74 transitions, 584 flow. Second operand 6 states and 133 transitions. [2025-02-08 14:11:33,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 97 transitions, 903 flow [2025-02-08 14:11:33,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 841 flow, removed 10 selfloop flow, removed 14 redundant places. [2025-02-08 14:11:33,870 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 695 flow [2025-02-08 14:11:33,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=695, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2025-02-08 14:11:33,871 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2025-02-08 14:11:33,871 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 695 flow [2025-02-08 14:11:33,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:33,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:33,871 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:33,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 14:11:33,871 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:33,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash 137474611, now seen corresponding path program 3 times [2025-02-08 14:11:33,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:33,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254612674] [2025-02-08 14:11:33,872 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:11:33,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:33,880 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 3 equivalence classes. [2025-02-08 14:11:33,889 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 31 of 34 statements. [2025-02-08 14:11:33,889 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 14:11:33,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 14:11:33,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254612674] [2025-02-08 14:11:33,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254612674] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206875784] [2025-02-08 14:11:33,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:11:33,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:33,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:33,938 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:33,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 14:11:33,984 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 3 equivalence classes. [2025-02-08 14:11:34,003 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 31 of 34 statements. [2025-02-08 14:11:34,003 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 14:11:34,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:34,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:11:34,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 14:11:34,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 14:11:34,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206875784] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:34,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:34,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-02-08 14:11:34,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78752389] [2025-02-08 14:11:34,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:34,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:11:34,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:34,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:11:34,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:11:34,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-08 14:11:34,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 695 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:34,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:34,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-08 14:11:34,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:34,323 INFO L124 PetriNetUnfolderBase]: 1013/2127 cut-off events. [2025-02-08 14:11:34,323 INFO L125 PetriNetUnfolderBase]: For 8147/8187 co-relation queries the response was YES. [2025-02-08 14:11:34,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8457 conditions, 2127 events. 1013/2127 cut-off events. For 8147/8187 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12155 event pairs, 492 based on Foata normal form. 32/2139 useless extension candidates. Maximal degree in co-relation 7895. Up to 1244 conditions per place. [2025-02-08 14:11:34,338 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 61 selfloop transitions, 16 changer transitions 0/90 dead transitions. [2025-02-08 14:11:34,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 907 flow [2025-02-08 14:11:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-02-08 14:11:34,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2025-02-08 14:11:34,340 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 695 flow. Second operand 4 states and 91 transitions. [2025-02-08 14:11:34,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 907 flow [2025-02-08 14:11:34,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 867 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-08 14:11:34,356 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 679 flow [2025-02-08 14:11:34,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=94, PETRI_TRANSITIONS=79} [2025-02-08 14:11:34,357 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2025-02-08 14:11:34,357 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 679 flow [2025-02-08 14:11:34,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:34,357 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:34,358 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:34,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 14:11:34,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 14:11:34,562 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:34,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash -337366354, now seen corresponding path program 1 times [2025-02-08 14:11:34,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:34,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527787702] [2025-02-08 14:11:34,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:34,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-08 14:11:34,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 14:11:34,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:34,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-08 14:11:34,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:34,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527787702] [2025-02-08 14:11:34,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527787702] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:34,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:34,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:11:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499937083] [2025-02-08 14:11:34,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:34,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:34,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:34,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:34,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-02-08 14:11:34,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 79 transitions, 679 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:34,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:34,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-02-08 14:11:34,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:35,031 INFO L124 PetriNetUnfolderBase]: 1461/2863 cut-off events. [2025-02-08 14:11:35,032 INFO L125 PetriNetUnfolderBase]: For 16894/16958 co-relation queries the response was YES. [2025-02-08 14:11:35,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11653 conditions, 2863 events. 1461/2863 cut-off events. For 16894/16958 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16583 event pairs, 257 based on Foata normal form. 146/3005 useless extension candidates. Maximal degree in co-relation 9965. Up to 1269 conditions per place. [2025-02-08 14:11:35,047 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 85 selfloop transitions, 4 changer transitions 6/106 dead transitions. [2025-02-08 14:11:35,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 106 transitions, 1164 flow [2025-02-08 14:11:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:35,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-02-08 14:11:35,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2025-02-08 14:11:35,049 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 679 flow. Second operand 4 states and 92 transitions. [2025-02-08 14:11:35,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 106 transitions, 1164 flow [2025-02-08 14:11:35,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 1104 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:35,065 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 650 flow [2025-02-08 14:11:35,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=650, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2025-02-08 14:11:35,065 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2025-02-08 14:11:35,065 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 650 flow [2025-02-08 14:11:35,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:35,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:35,066 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:35,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 14:11:35,066 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:35,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:35,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1712539112, now seen corresponding path program 1 times [2025-02-08 14:11:35,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:35,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739207202] [2025-02-08 14:11:35,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:35,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-08 14:11:35,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 14:11:35,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:35,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:36,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:36,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739207202] [2025-02-08 14:11:36,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739207202] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:36,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519812490] [2025-02-08 14:11:36,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:36,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:36,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:36,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:36,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 14:11:36,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-08 14:11:36,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 14:11:36,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:36,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:36,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-08 14:11:36,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:36,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-08 14:11:37,268 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2025-02-08 14:11:37,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2025-02-08 14:11:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:37,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:37,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 52 [2025-02-08 14:11:37,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:11:37,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 99 [2025-02-08 14:11:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:38,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519812490] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:38,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:38,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2025-02-08 14:11:38,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147070645] [2025-02-08 14:11:38,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:38,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-02-08 14:11:38,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:38,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-02-08 14:11:38,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1916, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 14:11:38,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-02-08 14:11:38,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 650 flow. Second operand has 47 states, 47 states have (on average 10.787234042553191) internal successors, (507), 47 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:38,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:38,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-02-08 14:11:38,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:46,783 INFO L124 PetriNetUnfolderBase]: 5305/9908 cut-off events. [2025-02-08 14:11:46,783 INFO L125 PetriNetUnfolderBase]: For 36233/36233 co-relation queries the response was YES. [2025-02-08 14:11:46,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37332 conditions, 9908 events. 5305/9908 cut-off events. For 36233/36233 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 67769 event pairs, 287 based on Foata normal form. 564/10472 useless extension candidates. Maximal degree in co-relation 23968. Up to 1841 conditions per place. [2025-02-08 14:11:46,838 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 399 selfloop transitions, 275 changer transitions 10/693 dead transitions. [2025-02-08 14:11:46,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 693 transitions, 6399 flow [2025-02-08 14:11:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2025-02-08 14:11:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2025-02-08 14:11:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 1382 transitions. [2025-02-08 14:11:46,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.323501872659176 [2025-02-08 14:11:46,842 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 650 flow. Second operand 89 states and 1382 transitions. [2025-02-08 14:11:46,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 693 transitions, 6399 flow [2025-02-08 14:11:46,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 693 transitions, 6195 flow, removed 39 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:46,998 INFO L231 Difference]: Finished difference. Result has 217 places, 368 transitions, 4683 flow [2025-02-08 14:11:47,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=4683, PETRI_PLACES=217, PETRI_TRANSITIONS=368} [2025-02-08 14:11:47,001 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 171 predicate places. [2025-02-08 14:11:47,001 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 368 transitions, 4683 flow [2025-02-08 14:11:47,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 10.787234042553191) internal successors, (507), 47 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:47,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:47,002 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:47,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 14:11:47,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:47,206 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:47,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash -222722284, now seen corresponding path program 1 times [2025-02-08 14:11:47,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:47,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384645569] [2025-02-08 14:11:47,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:47,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:47,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-08 14:11:47,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 14:11:47,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:47,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:48,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:48,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384645569] [2025-02-08 14:11:48,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384645569] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:48,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326827817] [2025-02-08 14:11:48,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:48,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:48,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:48,265 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:48,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 14:11:48,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-08 14:11:48,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 14:11:48,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:48,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:48,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 14:11:48,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:48,765 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 14:11:48,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2025-02-08 14:11:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:48,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:48,881 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-02-08 14:11:48,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2025-02-08 14:11:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:49,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326827817] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:49,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:49,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-02-08 14:11:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769272503] [2025-02-08 14:11:49,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:49,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-08 14:11:49,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:49,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-08 14:11:49,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1828, Unknown=0, NotChecked=0, Total=2070 [2025-02-08 14:11:49,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-02-08 14:11:49,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 368 transitions, 4683 flow. Second operand has 46 states, 46 states have (on average 11.717391304347826) internal successors, (539), 46 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:49,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:49,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-02-08 14:11:49,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:57,345 INFO L124 PetriNetUnfolderBase]: 9162/17769 cut-off events. [2025-02-08 14:11:57,345 INFO L125 PetriNetUnfolderBase]: For 354815/355851 co-relation queries the response was YES. [2025-02-08 14:11:57,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103559 conditions, 17769 events. 9162/17769 cut-off events. For 354815/355851 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 140054 event pairs, 453 based on Foata normal form. 1194/18935 useless extension candidates. Maximal degree in co-relation 85628. Up to 3186 conditions per place. [2025-02-08 14:11:57,553 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 828 selfloop transitions, 629 changer transitions 6/1477 dead transitions. [2025-02-08 14:11:57,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1477 transitions, 21352 flow [2025-02-08 14:11:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2025-02-08 14:11:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2025-02-08 14:11:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 1725 transitions. [2025-02-08 14:11:57,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3667091836734694 [2025-02-08 14:11:57,558 INFO L175 Difference]: Start difference. First operand has 217 places, 368 transitions, 4683 flow. Second operand 98 states and 1725 transitions. [2025-02-08 14:11:57,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1477 transitions, 21352 flow [2025-02-08 14:11:58,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1477 transitions, 19521 flow, removed 739 selfloop flow, removed 16 redundant places. [2025-02-08 14:11:58,331 INFO L231 Difference]: Finished difference. Result has 368 places, 875 transitions, 14043 flow [2025-02-08 14:11:58,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3907, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=14043, PETRI_PLACES=368, PETRI_TRANSITIONS=875} [2025-02-08 14:11:58,333 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 322 predicate places. [2025-02-08 14:11:58,333 INFO L471 AbstractCegarLoop]: Abstraction has has 368 places, 875 transitions, 14043 flow [2025-02-08 14:11:58,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 11.717391304347826) internal successors, (539), 46 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:58,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:58,333 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:58,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:58,534 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,SelfDestructingSolverStorable20 [2025-02-08 14:11:58,534 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:11:58,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:58,535 INFO L85 PathProgramCache]: Analyzing trace with hash 723523348, now seen corresponding path program 2 times [2025-02-08 14:11:58,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:58,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450513648] [2025-02-08 14:11:58,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:58,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:58,542 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-08 14:11:58,559 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 14:11:58,559 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:11:58,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:59,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:59,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450513648] [2025-02-08 14:11:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450513648] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501404175] [2025-02-08 14:11:59,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:59,298 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) [2025-02-08 14:11:59,301 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 [2025-02-08 14:11:59,347 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-08 14:11:59,371 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 14:11:59,371 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:11:59,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:59,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-08 14:11:59,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:59,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 14:12:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:00,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:00,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-02-08 14:12:00,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:12:00,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2025-02-08 14:12:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501404175] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:01,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:01,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 51 [2025-02-08 14:12:01,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309911148] [2025-02-08 14:12:01,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:01,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-02-08 14:12:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:01,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-02-08 14:12:01,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=2305, Unknown=0, NotChecked=0, Total=2756 [2025-02-08 14:12:01,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-02-08 14:12:01,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 875 transitions, 14043 flow. Second operand has 53 states, 53 states have (on average 11.49056603773585) internal successors, (609), 53 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:01,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:01,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-02-08 14:12:01,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:09,267 INFO L124 PetriNetUnfolderBase]: 3877/7674 cut-off events. [2025-02-08 14:12:09,267 INFO L125 PetriNetUnfolderBase]: For 646894/647194 co-relation queries the response was YES. [2025-02-08 14:12:09,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64789 conditions, 7674 events. 3877/7674 cut-off events. For 646894/647194 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 54619 event pairs, 124 based on Foata normal form. 374/8034 useless extension candidates. Maximal degree in co-relation 64623. Up to 1677 conditions per place. [2025-02-08 14:12:09,347 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 242 selfloop transitions, 453 changer transitions 106/815 dead transitions. [2025-02-08 14:12:09,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 815 transitions, 13180 flow [2025-02-08 14:12:09,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2025-02-08 14:12:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2025-02-08 14:12:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 1683 transitions. [2025-02-08 14:12:09,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.310287610619469 [2025-02-08 14:12:09,352 INFO L175 Difference]: Start difference. First operand has 368 places, 875 transitions, 14043 flow. Second operand 113 states and 1683 transitions. [2025-02-08 14:12:09,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 815 transitions, 13180 flow [2025-02-08 14:12:10,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 815 transitions, 9543 flow, removed 1717 selfloop flow, removed 94 redundant places. [2025-02-08 14:12:10,068 INFO L231 Difference]: Finished difference. Result has 322 places, 510 transitions, 7541 flow [2025-02-08 14:12:10,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=7541, PETRI_PLACES=322, PETRI_TRANSITIONS=510} [2025-02-08 14:12:10,069 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 276 predicate places. [2025-02-08 14:12:10,069 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 510 transitions, 7541 flow [2025-02-08 14:12:10,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 11.49056603773585) internal successors, (609), 53 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:10,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:10,069 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:10,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 14:12:10,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:10,270 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:12:10,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -823666280, now seen corresponding path program 3 times [2025-02-08 14:12:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:10,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679374102] [2025-02-08 14:12:10,271 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:12:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:10,280 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 4 equivalence classes. [2025-02-08 14:12:10,296 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 36 of 37 statements. [2025-02-08 14:12:10,296 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 14:12:10,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-08 14:12:10,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:10,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679374102] [2025-02-08 14:12:10,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679374102] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:10,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037155142] [2025-02-08 14:12:10,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:12:10,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:10,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:10,454 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:12:10,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 14:12:10,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 4 equivalence classes. [2025-02-08 14:12:10,528 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 36 of 37 statements. [2025-02-08 14:12:10,528 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 14:12:10,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:10,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 14:12:10,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 14:12:10,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:10,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:12:10,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-02-08 14:12:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 14:12:11,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037155142] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:11,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:11,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2025-02-08 14:12:11,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530117804] [2025-02-08 14:12:11,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:11,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-08 14:12:11,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:11,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-08 14:12:11,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2025-02-08 14:12:11,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-08 14:12:11,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 510 transitions, 7541 flow. Second operand has 27 states, 27 states have (on average 14.777777777777779) internal successors, (399), 27 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:11,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:11,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-08 14:12:11,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:16,931 INFO L124 PetriNetUnfolderBase]: 7883/15116 cut-off events. [2025-02-08 14:12:16,931 INFO L125 PetriNetUnfolderBase]: For 440217/440979 co-relation queries the response was YES. [2025-02-08 14:12:17,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103249 conditions, 15116 events. 7883/15116 cut-off events. For 440217/440979 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 114263 event pairs, 269 based on Foata normal form. 1298/16390 useless extension candidates. Maximal degree in co-relation 103054. Up to 2727 conditions per place. [2025-02-08 14:12:17,347 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 892 selfloop transitions, 871 changer transitions 39/1816 dead transitions. [2025-02-08 14:12:17,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1816 transitions, 30565 flow [2025-02-08 14:12:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-02-08 14:12:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2025-02-08 14:12:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 2293 transitions. [2025-02-08 14:12:17,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3883807588075881 [2025-02-08 14:12:17,353 INFO L175 Difference]: Start difference. First operand has 322 places, 510 transitions, 7541 flow. Second operand 123 states and 2293 transitions. [2025-02-08 14:12:17,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1816 transitions, 30565 flow [2025-02-08 14:12:18,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 1816 transitions, 25055 flow, removed 2376 selfloop flow, removed 36 redundant places. [2025-02-08 14:12:18,617 INFO L231 Difference]: Finished difference. Result has 447 places, 1132 transitions, 17670 flow [2025-02-08 14:12:18,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6157, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=123, PETRI_FLOW=17670, PETRI_PLACES=447, PETRI_TRANSITIONS=1132} [2025-02-08 14:12:18,619 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 401 predicate places. [2025-02-08 14:12:18,620 INFO L471 AbstractCegarLoop]: Abstraction has has 447 places, 1132 transitions, 17670 flow [2025-02-08 14:12:18,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 14.777777777777779) internal successors, (399), 27 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:18,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:18,620 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:18,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 14:12:18,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:18,821 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:12:18,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1356989391, now seen corresponding path program 2 times [2025-02-08 14:12:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:18,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410820405] [2025-02-08 14:12:18,822 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:12:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:18,829 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-08 14:12:18,847 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 14:12:18,848 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:12:18,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:12:19,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410820405] [2025-02-08 14:12:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410820405] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537306847] [2025-02-08 14:12:19,085 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:12:19,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:19,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:19,088 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:12:19,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 14:12:19,262 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-08 14:12:19,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 14:12:19,289 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:12:19,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:19,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 14:12:19,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:12:19,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:19,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:12:19,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2025-02-08 14:12:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:12:19,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537306847] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:19,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:19,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 9] total 31 [2025-02-08 14:12:19,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42636956] [2025-02-08 14:12:19,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:19,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-08 14:12:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:19,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-08 14:12:19,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 14:12:19,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-02-08 14:12:19,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1132 transitions, 17670 flow. Second operand has 33 states, 33 states have (on average 11.424242424242424) internal successors, (377), 33 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:19,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:19,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-02-08 14:12:19,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:28,061 INFO L124 PetriNetUnfolderBase]: 12944/23517 cut-off events. [2025-02-08 14:12:28,061 INFO L125 PetriNetUnfolderBase]: For 700525/700525 co-relation queries the response was YES. [2025-02-08 14:12:28,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162822 conditions, 23517 events. 12944/23517 cut-off events. For 700525/700525 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 185393 event pairs, 1115 based on Foata normal form. 500/23917 useless extension candidates. Maximal degree in co-relation 162279. Up to 7439 conditions per place. [2025-02-08 14:12:28,392 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 860 selfloop transitions, 1029 changer transitions 12/1910 dead transitions. [2025-02-08 14:12:28,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1910 transitions, 32469 flow [2025-02-08 14:12:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-08 14:12:28,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-02-08 14:12:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 939 transitions. [2025-02-08 14:12:28,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3206967213114754 [2025-02-08 14:12:28,395 INFO L175 Difference]: Start difference. First operand has 447 places, 1132 transitions, 17670 flow. Second operand 61 states and 939 transitions. [2025-02-08 14:12:28,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1910 transitions, 32469 flow [2025-02-08 14:12:33,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1910 transitions, 30114 flow, removed 940 selfloop flow, removed 13 redundant places. [2025-02-08 14:12:33,650 INFO L231 Difference]: Finished difference. Result has 507 places, 1519 transitions, 25401 flow [2025-02-08 14:12:33,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=16033, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=636, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=25401, PETRI_PLACES=507, PETRI_TRANSITIONS=1519} [2025-02-08 14:12:33,652 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 461 predicate places. [2025-02-08 14:12:33,652 INFO L471 AbstractCegarLoop]: Abstraction has has 507 places, 1519 transitions, 25401 flow [2025-02-08 14:12:33,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.424242424242424) internal successors, (377), 33 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:33,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:33,652 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:33,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 14:12:33,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 14:12:33,853 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:12:33,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1574126595, now seen corresponding path program 3 times [2025-02-08 14:12:33,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:33,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827162568] [2025-02-08 14:12:33,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:12:33,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:33,860 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-02-08 14:12:33,870 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 39 statements. [2025-02-08 14:12:33,871 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 14:12:33,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:12:34,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:34,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827162568] [2025-02-08 14:12:34,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827162568] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:34,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781731110] [2025-02-08 14:12:34,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:12:34,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:34,140 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:12:34,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 14:12:34,204 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-02-08 14:12:34,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 39 statements. [2025-02-08 14:12:34,229 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 14:12:34,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:34,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 14:12:34,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:12:34,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:34,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:12:34,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2025-02-08 14:12:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:12:34,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781731110] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:34,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:34,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2025-02-08 14:12:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628824492] [2025-02-08 14:12:34,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:34,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-08 14:12:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:34,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-08 14:12:34,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-02-08 14:12:34,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-02-08 14:12:34,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 1519 transitions, 25401 flow. Second operand has 27 states, 27 states have (on average 13.37037037037037) internal successors, (361), 27 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:34,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:34,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-02-08 14:12:34,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand