./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:41:55,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:41:55,677 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:41:55,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:41:55,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:41:55,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:41:55,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:41:55,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:41:55,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:41:55,708 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:41:55,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:41:55,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:41:55,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:41:55,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:41:55,709 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:41:55,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:41:55,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:41:55,711 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:41:55,711 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:41:55,711 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:41:55,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:41:55,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:41:55,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:41:55,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:41:55,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:41:55,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:41:55,712 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:41:55,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:41:55,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:41:55,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:41:55,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:41:55,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:41:55,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:41:55,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:41:55,713 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 ! call(reach_error())) ) 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 -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2025-02-06 04:41:55,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:41:55,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:41:55,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:41:55,964 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:41:55,965 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:41:55,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2025-02-06 04:41:57,090 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5ffc23749/02f2e69f7096478a89827a9c9fe23b9b/FLAGeee9025b9 [2025-02-06 04:41:57,303 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:41:57,304 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2025-02-06 04:41:57,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5ffc23749/02f2e69f7096478a89827a9c9fe23b9b/FLAGeee9025b9 [2025-02-06 04:41:57,634 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5ffc23749/02f2e69f7096478a89827a9c9fe23b9b [2025-02-06 04:41:57,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:41:57,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:41:57,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:41:57,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:41:57,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:41:57,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c32d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57, skipping insertion in model container [2025-02-06 04:41:57,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:41:57,774 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2637,2650] [2025-02-06 04:41:57,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:41:57,790 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:41:57,807 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2637,2650] [2025-02-06 04:41:57,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:41:57,820 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:41:57,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57 WrapperNode [2025-02-06 04:41:57,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:41:57,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:41:57,822 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:41:57,822 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:41:57,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,850 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 173 [2025-02-06 04:41:57,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:41:57,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:41:57,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:41:57,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:41:57,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,876 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2025-02-06 04:41:57,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,886 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:41:57,896 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:41:57,896 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:41:57,896 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:41:57,897 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (1/1) ... [2025-02-06 04:41:57,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:41:57,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:57,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:41:57,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:41:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:41:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:41:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:41:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:41:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:41:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:41:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:41:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:41:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:41:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:41:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:41:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:41:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:41:57,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:41:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:41:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:41:57,946 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:41:58,018 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:41:58,020 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:41:58,303 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:41:58,303 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:41:58,521 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:41:58,522 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:41:58,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:41:58 BoogieIcfgContainer [2025-02-06 04:41:58,522 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:41:58,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:41:58,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:41:58,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:41:58,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:41:57" (1/3) ... [2025-02-06 04:41:58,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d867a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:41:58, skipping insertion in model container [2025-02-06 04:41:58,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:57" (2/3) ... [2025-02-06 04:41:58,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d867a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:41:58, skipping insertion in model container [2025-02-06 04:41:58,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:41:58" (3/3) ... [2025-02-06 04:41:58,529 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2025-02-06 04:41:58,544 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:41:58,545 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-vector-add.wvr.c that has 4 procedures, 27 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-02-06 04:41:58,546 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:41:58,588 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:41:58,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 33 transitions, 87 flow [2025-02-06 04:41:58,643 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2025-02-06 04:41:58,659 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:41:58,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 7/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-02-06 04:41:58,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 33 transitions, 87 flow [2025-02-06 04:41:58,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 29 transitions, 76 flow [2025-02-06 04:41:58,680 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:41:58,693 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;@7bbcd1f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:41:58,693 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:41:58,704 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:41:58,705 INFO L124 PetriNetUnfolderBase]: 7/28 cut-off events. [2025-02-06 04:41:58,705 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:41:58,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:58,706 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] [2025-02-06 04:41:58,706 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:58,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:58,710 INFO L85 PathProgramCache]: Analyzing trace with hash -198812890, now seen corresponding path program 1 times [2025-02-06 04:41:58,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:58,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192176256] [2025-02-06 04:41:58,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:58,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:58,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:41:58,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:58,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:58,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:59,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:59,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192176256] [2025-02-06 04:41:59,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192176256] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:59,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:59,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:41:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567430322] [2025-02-06 04:41:59,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:59,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:41:59,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:59,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:41:59,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:41:59,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:41:59,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:59,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:59,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:41:59,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:59,384 INFO L124 PetriNetUnfolderBase]: 411/611 cut-off events. [2025-02-06 04:41:59,384 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2025-02-06 04:41:59,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 611 events. 411/611 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1674 event pairs, 248 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 534. Up to 301 conditions per place. [2025-02-06 04:41:59,408 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 24 selfloop transitions, 8 changer transitions 34/67 dead transitions. [2025-02-06 04:41:59,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 67 transitions, 302 flow [2025-02-06 04:41:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:41:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:41:59,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2025-02-06 04:41:59,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2025-02-06 04:41:59,423 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 76 flow. Second operand 5 states and 87 transitions. [2025-02-06 04:41:59,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 67 transitions, 302 flow [2025-02-06 04:41:59,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 67 transitions, 278 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:41:59,431 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 116 flow [2025-02-06 04:41:59,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2025-02-06 04:41:59,435 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2025-02-06 04:41:59,438 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 116 flow [2025-02-06 04:41:59,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:59,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:59,438 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, 1, 1, 1] [2025-02-06 04:41:59,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:41:59,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:59,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:59,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1332724971, now seen corresponding path program 1 times [2025-02-06 04:41:59,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:59,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458653378] [2025-02-06 04:41:59,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:59,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:59,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:41:59,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:41:59,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:59,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:59,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:59,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458653378] [2025-02-06 04:41:59,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458653378] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:59,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823048804] [2025-02-06 04:41:59,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:59,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:59,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:59,613 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:41:59,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:41:59,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:41:59,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:41:59,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:59,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:59,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:41:59,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:59,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:59,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823048804] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:59,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:41:59,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2025-02-06 04:41:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674710810] [2025-02-06 04:41:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:59,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:41:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:59,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:41:59,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:41:59,793 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:41:59,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:59,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:59,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:41:59,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:59,876 INFO L124 PetriNetUnfolderBase]: 262/390 cut-off events. [2025-02-06 04:41:59,876 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 04:41:59,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 390 events. 262/390 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1016 event pairs, 124 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 814. Up to 303 conditions per place. [2025-02-06 04:41:59,878 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2025-02-06 04:41:59,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 230 flow [2025-02-06 04:41:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:41:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:41:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2025-02-06 04:41:59,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2025-02-06 04:41:59,879 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 116 flow. Second operand 5 states and 62 transitions. [2025-02-06 04:41:59,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 230 flow [2025-02-06 04:41:59,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 212 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-06 04:41:59,881 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 114 flow [2025-02-06 04:41:59,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2025-02-06 04:41:59,881 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2025-02-06 04:41:59,882 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 114 flow [2025-02-06 04:41:59,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:59,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:59,882 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, 1, 1, 1, 1] [2025-02-06 04:41:59,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:42:00,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:00,086 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:00,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:00,087 INFO L85 PathProgramCache]: Analyzing trace with hash -324941107, now seen corresponding path program 1 times [2025-02-06 04:42:00,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:00,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317091961] [2025-02-06 04:42:00,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:00,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:00,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:42:00,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:42:00,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:00,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:00,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317091961] [2025-02-06 04:42:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317091961] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456203645] [2025-02-06 04:42:00,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:00,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:00,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:00,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:00,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:42:00,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:42:00,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:42:00,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:00,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:00,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:42:00,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:00,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:00,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456203645] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:00,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:42:00,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-02-06 04:42:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407684643] [2025-02-06 04:42:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:00,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:42:00,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:00,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:42:00,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:42:00,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:42:00,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:00,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:00,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:42:00,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:00,672 INFO L124 PetriNetUnfolderBase]: 443/657 cut-off events. [2025-02-06 04:42:00,672 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2025-02-06 04:42:00,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 657 events. 443/657 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2093 event pairs, 169 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 1531. Up to 388 conditions per place. [2025-02-06 04:42:00,675 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 61 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2025-02-06 04:42:00,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 69 transitions, 358 flow [2025-02-06 04:42:00,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:42:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:42:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2025-02-06 04:42:00,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2025-02-06 04:42:00,676 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 114 flow. Second operand 7 states and 90 transitions. [2025-02-06 04:42:00,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 69 transitions, 358 flow [2025-02-06 04:42:00,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 69 transitions, 338 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-06 04:42:00,680 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 146 flow [2025-02-06 04:42:00,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=146, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2025-02-06 04:42:00,682 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2025-02-06 04:42:00,682 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 146 flow [2025-02-06 04:42:00,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:00,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:00,682 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, 1, 1, 1, 1] [2025-02-06 04:42:00,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 04:42:00,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:00,886 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:00,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:00,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1830983701, now seen corresponding path program 2 times [2025-02-06 04:42:00,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:00,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137769991] [2025-02-06 04:42:00,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:00,898 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 04:42:00,910 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-02-06 04:42:00,910 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:42:00,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 04:42:00,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:00,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137769991] [2025-02-06 04:42:00,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137769991] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:00,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:00,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:42:00,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820713519] [2025-02-06 04:42:00,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:00,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:42:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:00,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:42:00,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:42:00,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:42:00,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-02-06 04:42:00,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:00,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:42:00,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:01,225 INFO L124 PetriNetUnfolderBase]: 693/1027 cut-off events. [2025-02-06 04:42:01,225 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2025-02-06 04:42:01,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2974 conditions, 1027 events. 693/1027 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3610 event pairs, 291 based on Foata normal form. 1/809 useless extension candidates. Maximal degree in co-relation 2925. Up to 642 conditions per place. [2025-02-06 04:42:01,230 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 65 selfloop transitions, 7 changer transitions 9/82 dead transitions. [2025-02-06 04:42:01,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 82 transitions, 468 flow [2025-02-06 04:42:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:42:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:42:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2025-02-06 04:42:01,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2025-02-06 04:42:01,232 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 146 flow. Second operand 6 states and 89 transitions. [2025-02-06 04:42:01,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 82 transitions, 468 flow [2025-02-06 04:42:01,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 82 transitions, 447 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-06 04:42:01,234 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 186 flow [2025-02-06 04:42:01,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2025-02-06 04:42:01,235 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2025-02-06 04:42:01,235 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 186 flow [2025-02-06 04:42:01,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-02-06 04:42:01,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:01,235 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, 1, 1, 1, 1] [2025-02-06 04:42:01,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:42:01,236 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:01,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:01,236 INFO L85 PathProgramCache]: Analyzing trace with hash 739664737, now seen corresponding path program 3 times [2025-02-06 04:42:01,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:01,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272650850] [2025-02-06 04:42:01,236 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:01,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:01,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-02-06 04:42:01,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-02-06 04:42:01,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:42:01,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 04:42:01,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272650850] [2025-02-06 04:42:01,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272650850] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:01,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:01,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:42:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789645566] [2025-02-06 04:42:01,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:01,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:42:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:01,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:42:01,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:42:01,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:42:01,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-02-06 04:42:01,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:01,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:42:01,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:01,583 INFO L124 PetriNetUnfolderBase]: 748/1101 cut-off events. [2025-02-06 04:42:01,583 INFO L125 PetriNetUnfolderBase]: For 1216/1216 co-relation queries the response was YES. [2025-02-06 04:42:01,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 1101 events. 748/1101 cut-off events. For 1216/1216 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3945 event pairs, 366 based on Foata normal form. 1/926 useless extension candidates. Maximal degree in co-relation 3645. Up to 827 conditions per place. [2025-02-06 04:42:01,590 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 61 selfloop transitions, 11 changer transitions 9/82 dead transitions. [2025-02-06 04:42:01,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 514 flow [2025-02-06 04:42:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:42:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:42:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2025-02-06 04:42:01,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2025-02-06 04:42:01,592 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 186 flow. Second operand 6 states and 89 transitions. [2025-02-06 04:42:01,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 514 flow [2025-02-06 04:42:01,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 82 transitions, 488 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-06 04:42:01,597 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 257 flow [2025-02-06 04:42:01,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2025-02-06 04:42:01,599 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2025-02-06 04:42:01,599 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 257 flow [2025-02-06 04:42:01,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-02-06 04:42:01,600 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:01,600 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, 1, 1, 1, 1] [2025-02-06 04:42:01,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:42:01,600 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:01,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:01,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1515166229, now seen corresponding path program 4 times [2025-02-06 04:42:01,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:01,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425268959] [2025-02-06 04:42:01,601 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:01,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:01,612 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-06 04:42:01,617 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-02-06 04:42:01,617 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:42:01,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:01,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425268959] [2025-02-06 04:42:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425268959] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553662720] [2025-02-06 04:42:01,675 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:01,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:01,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:01,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:01,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:42:01,734 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-06 04:42:01,748 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-02-06 04:42:01,748 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:42:01,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:01,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:42:01,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:01,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553662720] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:01,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-06 04:42:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762795674] [2025-02-06 04:42:01,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:01,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:42:01,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:01,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:42:01,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:42:01,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:42:01,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 257 flow. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:01,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:01,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:42:01,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:02,338 INFO L124 PetriNetUnfolderBase]: 911/1349 cut-off events. [2025-02-06 04:42:02,339 INFO L125 PetriNetUnfolderBase]: For 3654/3654 co-relation queries the response was YES. [2025-02-06 04:42:02,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5064 conditions, 1349 events. 911/1349 cut-off events. For 3654/3654 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5528 event pairs, 62 based on Foata normal form. 6/1139 useless extension candidates. Maximal degree in co-relation 5021. Up to 364 conditions per place. [2025-02-06 04:42:02,346 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 161 selfloop transitions, 47 changer transitions 0/209 dead transitions. [2025-02-06 04:42:02,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 209 transitions, 1706 flow [2025-02-06 04:42:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 04:42:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 04:42:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 200 transitions. [2025-02-06 04:42:02,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35650623885918004 [2025-02-06 04:42:02,348 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 257 flow. Second operand 17 states and 200 transitions. [2025-02-06 04:42:02,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 209 transitions, 1706 flow [2025-02-06 04:42:02,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 209 transitions, 1532 flow, removed 37 selfloop flow, removed 3 redundant places. [2025-02-06 04:42:02,354 INFO L231 Difference]: Finished difference. Result has 76 places, 95 transitions, 832 flow [2025-02-06 04:42:02,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=832, PETRI_PLACES=76, PETRI_TRANSITIONS=95} [2025-02-06 04:42:02,355 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2025-02-06 04:42:02,355 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 95 transitions, 832 flow [2025-02-06 04:42:02,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:02,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:02,355 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, 1, 1, 1, 1] [2025-02-06 04:42:02,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:02,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:02,556 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:02,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1794644537, now seen corresponding path program 5 times [2025-02-06 04:42:02,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:02,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895440695] [2025-02-06 04:42:02,557 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:02,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:02,565 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 04:42:02,573 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:42:02,573 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:02,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:02,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:02,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895440695] [2025-02-06 04:42:02,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895440695] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:02,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369094449] [2025-02-06 04:42:02,664 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:02,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:02,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:02,666 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:02,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:42:02,714 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 04:42:02,738 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:42:02,738 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:02,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:02,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:42:02,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:02,780 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:42:02,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369094449] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:02,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:42:02,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2025-02-06 04:42:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711506446] [2025-02-06 04:42:02,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:02,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:42:02,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:02,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:42:02,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:42:02,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:42:02,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 95 transitions, 832 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:02,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:02,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:42:02,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:02,995 INFO L124 PetriNetUnfolderBase]: 914/1365 cut-off events. [2025-02-06 04:42:02,995 INFO L125 PetriNetUnfolderBase]: For 8253/8253 co-relation queries the response was YES. [2025-02-06 04:42:03,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6429 conditions, 1365 events. 914/1365 cut-off events. For 8253/8253 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5324 event pairs, 350 based on Foata normal form. 3/1254 useless extension candidates. Maximal degree in co-relation 6364. Up to 1020 conditions per place. [2025-02-06 04:42:03,007 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 74 selfloop transitions, 54 changer transitions 10/139 dead transitions. [2025-02-06 04:42:03,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 139 transitions, 1411 flow [2025-02-06 04:42:03,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:42:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:42:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2025-02-06 04:42:03,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2025-02-06 04:42:03,008 INFO L175 Difference]: Start difference. First operand has 76 places, 95 transitions, 832 flow. Second operand 7 states and 94 transitions. [2025-02-06 04:42:03,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 139 transitions, 1411 flow [2025-02-06 04:42:03,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 139 transitions, 1353 flow, removed 24 selfloop flow, removed 1 redundant places. [2025-02-06 04:42:03,021 INFO L231 Difference]: Finished difference. Result has 85 places, 107 transitions, 1101 flow [2025-02-06 04:42:03,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1101, PETRI_PLACES=85, PETRI_TRANSITIONS=107} [2025-02-06 04:42:03,022 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2025-02-06 04:42:03,022 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 107 transitions, 1101 flow [2025-02-06 04:42:03,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:03,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:03,022 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, 1, 1, 1, 1] [2025-02-06 04:42:03,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:42:03,223 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,SelfDestructingSolverStorable6 [2025-02-06 04:42:03,223 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:03,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1445695419, now seen corresponding path program 6 times [2025-02-06 04:42:03,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:03,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006037016] [2025-02-06 04:42:03,224 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:03,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:03,231 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 2 equivalence classes. [2025-02-06 04:42:03,237 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-02-06 04:42:03,237 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:42:03,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 04:42:03,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:03,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006037016] [2025-02-06 04:42:03,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006037016] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:03,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:03,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:42:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638317393] [2025-02-06 04:42:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:03,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:42:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:03,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:42:03,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:42:03,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:42:03,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 107 transitions, 1101 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-02-06 04:42:03,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:03,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:42:03,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:03,505 INFO L124 PetriNetUnfolderBase]: 927/1383 cut-off events. [2025-02-06 04:42:03,505 INFO L125 PetriNetUnfolderBase]: For 9593/9593 co-relation queries the response was YES. [2025-02-06 04:42:03,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7168 conditions, 1383 events. 927/1383 cut-off events. For 9593/9593 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5527 event pairs, 351 based on Foata normal form. 2/1271 useless extension candidates. Maximal degree in co-relation 7098. Up to 1039 conditions per place. [2025-02-06 04:42:03,515 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 97 selfloop transitions, 34 changer transitions 10/142 dead transitions. [2025-02-06 04:42:03,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 142 transitions, 1580 flow [2025-02-06 04:42:03,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:42:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:42:03,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2025-02-06 04:42:03,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 04:42:03,516 INFO L175 Difference]: Start difference. First operand has 85 places, 107 transitions, 1101 flow. Second operand 6 states and 88 transitions. [2025-02-06 04:42:03,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 142 transitions, 1580 flow [2025-02-06 04:42:03,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 142 transitions, 1378 flow, removed 53 selfloop flow, removed 6 redundant places. [2025-02-06 04:42:03,537 INFO L231 Difference]: Finished difference. Result has 83 places, 108 transitions, 1000 flow [2025-02-06 04:42:03,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1000, PETRI_PLACES=83, PETRI_TRANSITIONS=108} [2025-02-06 04:42:03,537 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2025-02-06 04:42:03,537 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 108 transitions, 1000 flow [2025-02-06 04:42:03,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-02-06 04:42:03,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:03,537 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, 1, 1, 1, 1] [2025-02-06 04:42:03,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:42:03,538 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:03,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:03,538 INFO L85 PathProgramCache]: Analyzing trace with hash 733354647, now seen corresponding path program 7 times [2025-02-06 04:42:03,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:03,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46651382] [2025-02-06 04:42:03,538 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:03,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:03,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:42:03,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:42:03,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:03,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:03,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46651382] [2025-02-06 04:42:03,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46651382] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228730029] [2025-02-06 04:42:03,656 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:03,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:03,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:03,661 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:03,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:42:03,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:42:03,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:42:03,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:03,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:03,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:42:03,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:03,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:42:03,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228730029] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:03,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:42:03,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2025-02-06 04:42:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087683655] [2025-02-06 04:42:03,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:03,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:42:03,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:03,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:42:03,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:42:03,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:42:03,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 108 transitions, 1000 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:03,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:03,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:42:03,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:04,105 INFO L124 PetriNetUnfolderBase]: 887/1303 cut-off events. [2025-02-06 04:42:04,105 INFO L125 PetriNetUnfolderBase]: For 7596/7596 co-relation queries the response was YES. [2025-02-06 04:42:04,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6308 conditions, 1303 events. 887/1303 cut-off events. For 7596/7596 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4901 event pairs, 286 based on Foata normal form. 14/1203 useless extension candidates. Maximal degree in co-relation 6264. Up to 703 conditions per place. [2025-02-06 04:42:04,114 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 74 selfloop transitions, 56 changer transitions 0/131 dead transitions. [2025-02-06 04:42:04,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 131 transitions, 1350 flow [2025-02-06 04:42:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:42:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:42:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-02-06 04:42:04,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37662337662337664 [2025-02-06 04:42:04,116 INFO L175 Difference]: Start difference. First operand has 83 places, 108 transitions, 1000 flow. Second operand 7 states and 87 transitions. [2025-02-06 04:42:04,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 131 transitions, 1350 flow [2025-02-06 04:42:04,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 1252 flow, removed 16 selfloop flow, removed 4 redundant places. [2025-02-06 04:42:04,133 INFO L231 Difference]: Finished difference. Result has 83 places, 106 transitions, 1009 flow [2025-02-06 04:42:04,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1009, PETRI_PLACES=83, PETRI_TRANSITIONS=106} [2025-02-06 04:42:04,134 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2025-02-06 04:42:04,134 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 106 transitions, 1009 flow [2025-02-06 04:42:04,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:04,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:04,135 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, 1, 1, 1, 1, 1] [2025-02-06 04:42:04,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 04:42:04,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:04,339 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:04,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:04,340 INFO L85 PathProgramCache]: Analyzing trace with hash -395278174, now seen corresponding path program 1 times [2025-02-06 04:42:04,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:04,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952473677] [2025-02-06 04:42:04,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:04,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:04,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 04:42:04,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:42:04,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:04,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:05,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952473677] [2025-02-06 04:42:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952473677] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108500561] [2025-02-06 04:42:05,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:05,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:05,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:05,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:05,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 04:42:05,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 04:42:05,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:42:05,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:05,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:05,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-06 04:42:05,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:05,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-02-06 04:42:05,726 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-06 04:42:05,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-02-06 04:42:05,759 INFO L349 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2025-02-06 04:42:05,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2025-02-06 04:42:05,812 INFO L349 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2025-02-06 04:42:05,812 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 21 treesize of output 25 [2025-02-06 04:42:06,026 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-06 04:42:06,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 32 [2025-02-06 04:42:06,172 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 04:42:06,211 INFO L349 Elim1Store]: treesize reduction 44, result has 51.6 percent of original size [2025-02-06 04:42:06,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 47 treesize of output 72 [2025-02-06 04:42:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:07,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:34,632 INFO L349 Elim1Store]: treesize reduction 102, result has 71.5 percent of original size [2025-02-06 04:42:34,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3286 treesize of output 1621 [2025-02-06 04:42:34,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:34,737 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 1381 treesize of output 1295 [2025-02-06 04:42:34,870 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-06 04:42:34,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 [2025-02-06 04:42:35,432 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-06 04:42:35,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 9 [2025-02-06 04:42:35,719 INFO L349 Elim1Store]: treesize reduction 16, result has 71.9 percent of original size [2025-02-06 04:42:35,719 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 41 treesize of output 65 [2025-02-06 04:42:35,859 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-06 04:42:35,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 9 [2025-02-06 04:43:29,401 WARN L286 SmtUtils]: Spent 7.08s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)