./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy10.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/test-easy10.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 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:44:10,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:44:10,721 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:44:10,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:44:10,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:44:10,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:44:10,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:44:10,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:44:10,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:44:10,756 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:44:10,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:44:10,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:44:10,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:44:10,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:44:10,757 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:44:10,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:44:10,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:44:10,757 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:44:10,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:44:10,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:44:10,759 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:44:10,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:44:10,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:44:10,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:44:10,760 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:44:10,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:44:10,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:44:10,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:44:10,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:44:10,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:44:10,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:44:10,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:44:10,760 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 -> 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 [2025-02-06 04:44:11,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:44:11,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:44:11,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:44:11,022 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:44:11,022 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:44:11,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-02-06 04:44:12,286 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/678cfce82/ebf8f90101f04f37a6887b556399f77c/FLAGba5ba6f3a [2025-02-06 04:44:12,512 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:44:12,513 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-02-06 04:44:12,539 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/678cfce82/ebf8f90101f04f37a6887b556399f77c/FLAGba5ba6f3a [2025-02-06 04:44:12,564 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/678cfce82/ebf8f90101f04f37a6887b556399f77c [2025-02-06 04:44:12,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:44:12,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:44:12,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:44:12,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:44:12,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:44:12,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3c6702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12, skipping insertion in model container [2025-02-06 04:44:12,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,594 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:44:12,765 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/test-easy10.wvr.c[2547,2560] [2025-02-06 04:44:12,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:44:12,785 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:44:12,811 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/test-easy10.wvr.c[2547,2560] [2025-02-06 04:44:12,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:44:12,829 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:44:12,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12 WrapperNode [2025-02-06 04:44:12,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:44:12,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:44:12,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:44:12,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:44:12,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,844 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,871 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 147 [2025-02-06 04:44:12,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:44:12,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:44:12,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:44:12,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:44:12,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,906 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 04:44:12,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,910 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:44:12,923 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:44:12,925 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:44:12,925 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:44:12,926 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (1/1) ... [2025-02-06 04:44:12,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:44:12,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:12,961 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 04:44:12,968 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 04:44:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:44:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:44:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:44:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:44:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:44:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:44:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:44:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 04:44:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 04:44:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:44:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:44:12,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:44:12,990 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 04:44:13,083 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:44:13,085 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:44:13,368 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:44:13,369 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:44:13,555 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:44:13,555 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:44:13,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:44:13 BoogieIcfgContainer [2025-02-06 04:44:13,556 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:44:13,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:44:13,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:44:13,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:44:13,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:44:12" (1/3) ... [2025-02-06 04:44:13,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d76c482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:44:13, skipping insertion in model container [2025-02-06 04:44:13,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:12" (2/3) ... [2025-02-06 04:44:13,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d76c482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:44:13, skipping insertion in model container [2025-02-06 04:44:13,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:44:13" (3/3) ... [2025-02-06 04:44:13,566 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2025-02-06 04:44:13,582 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:44:13,584 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy10.wvr.c that has 5 procedures, 61 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-06 04:44:13,584 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:44:13,651 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 04:44:13,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 60 transitions, 148 flow [2025-02-06 04:44:13,738 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-02-06 04:44:13,742 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:44:13,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 56 events. 0/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-02-06 04:44:13,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 60 transitions, 148 flow [2025-02-06 04:44:13,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 55 transitions, 134 flow [2025-02-06 04:44:13,760 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:44:13,775 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;@1075639e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:44:13,777 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 04:44:13,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:44:13,801 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2025-02-06 04:44:13,801 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:44:13,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:13,802 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, 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 04:44:13,803 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 2 more)] === [2025-02-06 04:44:13,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1595918204, now seen corresponding path program 1 times [2025-02-06 04:44:13,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:13,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718613248] [2025-02-06 04:44:13,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:13,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 04:44:14,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 04:44:14,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:14,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:14,475 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 04:44:14,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:14,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718613248] [2025-02-06 04:44:14,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718613248] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:14,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:14,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:44:14,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590535462] [2025-02-06 04:44:14,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:14,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:44:14,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:14,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:44:14,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:44:14,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-02-06 04:44:14,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:44:14,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:14,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-02-06 04:44:14,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:17,045 INFO L124 PetriNetUnfolderBase]: 22838/30875 cut-off events. [2025-02-06 04:44:17,045 INFO L125 PetriNetUnfolderBase]: For 835/835 co-relation queries the response was YES. [2025-02-06 04:44:17,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63061 conditions, 30875 events. 22838/30875 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 171470 event pairs, 7169 based on Foata normal form. 440/31303 useless extension candidates. Maximal degree in co-relation 59981. Up to 24496 conditions per place. [2025-02-06 04:44:17,299 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-02-06 04:44:17,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 328 flow [2025-02-06 04:44:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:44:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:44:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2025-02-06 04:44:17,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-06 04:44:17,319 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 134 flow. Second operand 3 states and 100 transitions. [2025-02-06 04:44:17,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 328 flow [2025-02-06 04:44:17,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 308 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 04:44:17,361 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 126 flow [2025-02-06 04:44:17,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2025-02-06 04:44:17,369 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2025-02-06 04:44:17,370 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 126 flow [2025-02-06 04:44:17,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:44:17,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:17,371 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, 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 04:44:17,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:44:17,373 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 2 more)] === [2025-02-06 04:44:17,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1581868704, now seen corresponding path program 2 times [2025-02-06 04:44:17,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:17,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155759676] [2025-02-06 04:44:17,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:17,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:17,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-02-06 04:44:17,423 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 04:44:17,424 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:44:17,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:17,664 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 04:44:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155759676] [2025-02-06 04:44:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155759676] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:17,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:44:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993189722] [2025-02-06 04:44:17,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:17,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:44:17,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:17,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:44:17,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:44:17,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-02-06 04:44:17,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:44:17,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:17,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-02-06 04:44:17,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:19,192 INFO L124 PetriNetUnfolderBase]: 17539/23845 cut-off events. [2025-02-06 04:44:19,193 INFO L125 PetriNetUnfolderBase]: For 1244/1244 co-relation queries the response was YES. [2025-02-06 04:44:19,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49400 conditions, 23845 events. 17539/23845 cut-off events. For 1244/1244 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 123621 event pairs, 6369 based on Foata normal form. 434/24259 useless extension candidates. Maximal degree in co-relation 19340. Up to 17342 conditions per place. [2025-02-06 04:44:19,304 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 68 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2025-02-06 04:44:19,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 313 flow [2025-02-06 04:44:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:44:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:44:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-02-06 04:44:19,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2025-02-06 04:44:19,308 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 126 flow. Second operand 3 states and 98 transitions. [2025-02-06 04:44:19,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 313 flow [2025-02-06 04:44:19,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:44:19,313 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 130 flow [2025-02-06 04:44:19,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2025-02-06 04:44:19,314 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2025-02-06 04:44:19,314 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 130 flow [2025-02-06 04:44:19,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:44:19,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:19,315 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, 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 04:44:19,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:44:19,315 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 2 more)] === [2025-02-06 04:44:19,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1653709342, now seen corresponding path program 3 times [2025-02-06 04:44:19,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:19,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580614357] [2025-02-06 04:44:19,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:19,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:19,332 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 1 equivalence classes. [2025-02-06 04:44:19,480 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 04:44:19,480 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:44:19,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:21,923 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 04:44:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:21,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580614357] [2025-02-06 04:44:21,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580614357] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:21,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:21,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 04:44:21,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209655286] [2025-02-06 04:44:21,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:21,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:44:21,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:21,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:44:21,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:44:21,929 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-02-06 04:44:21,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 130 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 04:44:21,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:21,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-02-06 04:44:21,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:26,530 INFO L124 PetriNetUnfolderBase]: 40518/55563 cut-off events. [2025-02-06 04:44:26,531 INFO L125 PetriNetUnfolderBase]: For 4089/4089 co-relation queries the response was YES. [2025-02-06 04:44:26,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117773 conditions, 55563 events. 40518/55563 cut-off events. For 4089/4089 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 333677 event pairs, 5199 based on Foata normal form. 1/55553 useless extension candidates. Maximal degree in co-relation 25344. Up to 14408 conditions per place. [2025-02-06 04:44:26,827 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 251 selfloop transitions, 16 changer transitions 19/291 dead transitions. [2025-02-06 04:44:26,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 291 transitions, 1269 flow [2025-02-06 04:44:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:44:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:44:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 422 transitions. [2025-02-06 04:44:26,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4688888888888889 [2025-02-06 04:44:26,831 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 130 flow. Second operand 15 states and 422 transitions. [2025-02-06 04:44:26,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 291 transitions, 1269 flow [2025-02-06 04:44:26,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 291 transitions, 1249 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:44:26,864 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 250 flow [2025-02-06 04:44:26,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=250, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2025-02-06 04:44:26,866 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2025-02-06 04:44:26,867 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 250 flow [2025-02-06 04:44:26,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 04:44:26,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:26,867 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, 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 04:44:26,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:44:26,868 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 2 more)] === [2025-02-06 04:44:26,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1206019800, now seen corresponding path program 4 times [2025-02-06 04:44:26,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:26,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406620249] [2025-02-06 04:44:26,869 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:26,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:26,880 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-02-06 04:44:26,891 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 04:44:26,892 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:26,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:26,991 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 04:44:26,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406620249] [2025-02-06 04:44:26,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406620249] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:26,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:26,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:44:26,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168747995] [2025-02-06 04:44:26,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:26,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:44:26,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:26,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:44:26,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:44:26,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-02-06 04:44:26,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:44:26,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:26,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-02-06 04:44:26,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:29,580 INFO L124 PetriNetUnfolderBase]: 32602/45048 cut-off events. [2025-02-06 04:44:29,581 INFO L125 PetriNetUnfolderBase]: For 29815/29815 co-relation queries the response was YES. [2025-02-06 04:44:29,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120816 conditions, 45048 events. 32602/45048 cut-off events. For 29815/29815 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 265158 event pairs, 12735 based on Foata normal form. 540/45579 useless extension candidates. Maximal degree in co-relation 120775. Up to 39090 conditions per place. [2025-02-06 04:44:29,969 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 86 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2025-02-06 04:44:29,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 503 flow [2025-02-06 04:44:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:44:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:44:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-02-06 04:44:29,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2025-02-06 04:44:29,973 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 250 flow. Second operand 3 states and 102 transitions. [2025-02-06 04:44:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 503 flow [2025-02-06 04:44:30,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 487 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-06 04:44:30,648 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 234 flow [2025-02-06 04:44:30,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2025-02-06 04:44:30,648 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2025-02-06 04:44:30,648 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 234 flow [2025-02-06 04:44:30,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:44:30,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:30,649 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, 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 04:44:30,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:44:30,649 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 2 more)] === [2025-02-06 04:44:30,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:30,650 INFO L85 PathProgramCache]: Analyzing trace with hash 147480268, now seen corresponding path program 5 times [2025-02-06 04:44:30,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:30,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098729446] [2025-02-06 04:44:30,650 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:30,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:30,658 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-02-06 04:44:30,707 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 04:44:30,707 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:44:30,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:32,479 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 04:44:32,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:32,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098729446] [2025-02-06 04:44:32,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098729446] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:32,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:32,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 04:44:32,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331739790] [2025-02-06 04:44:32,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:32,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:44:32,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:32,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:44:32,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:44:32,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-02-06 04:44:32,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 234 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 04:44:32,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:32,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-02-06 04:44:32,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:38,706 INFO L124 PetriNetUnfolderBase]: 60054/84046 cut-off events. [2025-02-06 04:44:38,706 INFO L125 PetriNetUnfolderBase]: For 48861/48861 co-relation queries the response was YES. [2025-02-06 04:44:38,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221306 conditions, 84046 events. 60054/84046 cut-off events. For 48861/48861 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 545885 event pairs, 9538 based on Foata normal form. 1/84038 useless extension candidates. Maximal degree in co-relation 169958. Up to 24934 conditions per place. [2025-02-06 04:44:39,204 INFO L140 encePairwiseOnDemand]: 44/60 looper letters, 291 selfloop transitions, 26 changer transitions 10/332 dead transitions. [2025-02-06 04:44:39,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 332 transitions, 1832 flow [2025-02-06 04:44:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:44:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:44:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 416 transitions. [2025-02-06 04:44:39,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4622222222222222 [2025-02-06 04:44:39,207 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 234 flow. Second operand 15 states and 416 transitions. [2025-02-06 04:44:39,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 332 transitions, 1832 flow [2025-02-06 04:44:39,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 332 transitions, 1812 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:44:39,850 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 472 flow [2025-02-06 04:44:39,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=472, PETRI_PLACES=109, PETRI_TRANSITIONS=87} [2025-02-06 04:44:39,851 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2025-02-06 04:44:39,851 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 472 flow [2025-02-06 04:44:39,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 04:44:39,851 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:39,851 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, 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 04:44:39,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:44:39,851 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 2 more)] === [2025-02-06 04:44:39,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash -220437026, now seen corresponding path program 6 times [2025-02-06 04:44:39,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:39,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36053716] [2025-02-06 04:44:39,853 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:39,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:39,863 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 1 equivalence classes. [2025-02-06 04:44:39,921 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 04:44:39,921 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:44:39,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:41,276 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 04:44:41,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:41,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36053716] [2025-02-06 04:44:41,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36053716] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:41,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:41,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 04:44:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991293530] [2025-02-06 04:44:41,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:41,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:44:41,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:41,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:44:41,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:44:41,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-02-06 04:44:41,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 472 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 04:44:41,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:41,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-02-06 04:44:41,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:50,381 INFO L124 PetriNetUnfolderBase]: 88783/125108 cut-off events. [2025-02-06 04:44:50,381 INFO L125 PetriNetUnfolderBase]: For 190066/190066 co-relation queries the response was YES. [2025-02-06 04:44:50,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380610 conditions, 125108 events. 88783/125108 cut-off events. For 190066/190066 co-relation queries the response was YES. Maximal size of possible extension queue 2790. Compared 862443 event pairs, 14208 based on Foata normal form. 1/125102 useless extension candidates. Maximal degree in co-relation 380310. Up to 36303 conditions per place. [2025-02-06 04:44:51,297 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 311 selfloop transitions, 48 changer transitions 10/374 dead transitions. [2025-02-06 04:44:51,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 374 transitions, 2595 flow [2025-02-06 04:44:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:44:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:44:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 413 transitions. [2025-02-06 04:44:51,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4588888888888889 [2025-02-06 04:44:51,300 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 472 flow. Second operand 15 states and 413 transitions. [2025-02-06 04:44:51,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 374 transitions, 2595 flow [2025-02-06 04:44:54,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 374 transitions, 2563 flow, removed 10 selfloop flow, removed 3 redundant places. [2025-02-06 04:44:54,711 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 972 flow [2025-02-06 04:44:54,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=972, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2025-02-06 04:44:54,712 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 63 predicate places. [2025-02-06 04:44:54,712 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 972 flow [2025-02-06 04:44:54,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 04:44:54,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:54,712 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, 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 04:44:54,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:44:54,713 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 2 more)] === [2025-02-06 04:44:54,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:54,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1346558056, now seen corresponding path program 7 times [2025-02-06 04:44:54,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:54,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085629377] [2025-02-06 04:44:54,713 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:54,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:54,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 04:44:54,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 04:44:54,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:54,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:56,065 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 04:44:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085629377] [2025-02-06 04:44:56,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085629377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:56,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:56,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 04:44:56,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881668315] [2025-02-06 04:44:56,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:56,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:44:56,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:56,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:44:56,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:44:56,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-02-06 04:44:56,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 972 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 04:44:56,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:56,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-02-06 04:44:56,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand