./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-4.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/parallel-ticket-4.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 ad6b8e6072d4c534442fdbffe3152158d5d2614d02df79d5ef08cd921f0d4751 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:37:07,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:37:07,945 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:37:07,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:37:07,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:37:07,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:37:07,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:37:07,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:37:07,976 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:37:07,976 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:37:07,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:37:07,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:37:07,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:37:07,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:37:07,976 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:37:07,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:37:07,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:37:07,976 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:37:07,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:37:07,976 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:37:07,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:37:07,977 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:37:07,977 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:37:07,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:37:07,977 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 -> ad6b8e6072d4c534442fdbffe3152158d5d2614d02df79d5ef08cd921f0d4751 [2025-02-06 04:37:08,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:37:08,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:37:08,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:37:08,156 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:37:08,156 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:37:08,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2025-02-06 04:37:09,288 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/485a42325/a6a6668c0d9041e69947b19431cd083d/FLAG91e87f266 [2025-02-06 04:37:09,570 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:37:09,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2025-02-06 04:37:09,582 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/485a42325/a6a6668c0d9041e69947b19431cd083d/FLAG91e87f266 [2025-02-06 04:37:09,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/485a42325/a6a6668c0d9041e69947b19431cd083d [2025-02-06 04:37:09,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:37:09,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:37:09,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:37:09,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:37:09,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:37:09,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:37:09" (1/1) ... [2025-02-06 04:37:09,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335c1f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:09, skipping insertion in model container [2025-02-06 04:37:09,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:37:09" (1/1) ... [2025-02-06 04:37:09,904 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:37:10,012 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/parallel-ticket-4.wvr.c[2554,2567] [2025-02-06 04:37:10,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:37:10,027 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:37:10,041 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/parallel-ticket-4.wvr.c[2554,2567] [2025-02-06 04:37:10,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:37:10,052 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:37:10,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10 WrapperNode [2025-02-06 04:37:10,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:37:10,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:37:10,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:37:10,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:37:10,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,088 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 172 [2025-02-06 04:37:10,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:37:10,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:37:10,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:37:10,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:37:10,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,115 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 04:37:10,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,119 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:37:10,125 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:37:10,125 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:37:10,125 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:37:10,126 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (1/1) ... [2025-02-06 04:37:10,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:37:10,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:37:10,149 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 04:37:10,153 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 04:37:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:37:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:37:10,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:37:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:37:10,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:37:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:37:10,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:37:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 04:37:10,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 04:37:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:37:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:37:10,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:37:10,170 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 04:37:10,230 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:37:10,231 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:37:10,407 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:37:10,407 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:37:10,514 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:37:10,514 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:37:10,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:37:10 BoogieIcfgContainer [2025-02-06 04:37:10,514 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:37:10,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:37:10,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:37:10,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:37:10,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:37:09" (1/3) ... [2025-02-06 04:37:10,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765af319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:37:10, skipping insertion in model container [2025-02-06 04:37:10,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:10" (2/3) ... [2025-02-06 04:37:10,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765af319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:37:10, skipping insertion in model container [2025-02-06 04:37:10,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:37:10" (3/3) ... [2025-02-06 04:37:10,524 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2025-02-06 04:37:10,534 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:37:10,535 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-4.wvr.c that has 5 procedures, 57 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-06 04:37:10,535 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:37:10,576 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 04:37:10,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 59 transitions, 146 flow [2025-02-06 04:37:10,629 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2025-02-06 04:37:10,631 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:37:10,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 55 events. 3/55 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2025-02-06 04:37:10,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 59 transitions, 146 flow [2025-02-06 04:37:10,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 54 transitions, 132 flow [2025-02-06 04:37:10,644 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:37:10,653 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;@2524d31e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:37:10,653 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 04:37:10,677 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:37:10,677 INFO L124 PetriNetUnfolderBase]: 3/53 cut-off events. [2025-02-06 04:37:10,677 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:37:10,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:10,678 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] [2025-02-06 04:37:10,678 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 04:37:10,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 91534751, now seen corresponding path program 1 times [2025-02-06 04:37:10,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:10,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254324802] [2025-02-06 04:37:10,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:37:10,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:10,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 04:37:10,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 04:37:10,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:10,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:11,071 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 04:37:11,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:11,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254324802] [2025-02-06 04:37:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254324802] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:11,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:11,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:37:11,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614211542] [2025-02-06 04:37:11,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:11,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:37:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:11,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:37:11,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:37:11,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:11,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 04:37:11,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:11,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:11,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:12,755 INFO L124 PetriNetUnfolderBase]: 17631/24113 cut-off events. [2025-02-06 04:37:12,756 INFO L125 PetriNetUnfolderBase]: For 1365/1365 co-relation queries the response was YES. [2025-02-06 04:37:12,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48642 conditions, 24113 events. 17631/24113 cut-off events. For 1365/1365 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 139193 event pairs, 6173 based on Foata normal form. 1/23348 useless extension candidates. Maximal degree in co-relation 45351. Up to 14774 conditions per place. [2025-02-06 04:37:12,940 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 66 selfloop transitions, 6 changer transitions 1/84 dead transitions. [2025-02-06 04:37:12,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 356 flow [2025-02-06 04:37:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:37:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:37:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2025-02-06 04:37:12,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2025-02-06 04:37:12,954 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 132 flow. Second operand 3 states and 119 transitions. [2025-02-06 04:37:12,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 356 flow [2025-02-06 04:37:12,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 328 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 04:37:12,989 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 148 flow [2025-02-06 04:37:12,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2025-02-06 04:37:12,993 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -5 predicate places. [2025-02-06 04:37:12,994 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 148 flow [2025-02-06 04:37:12,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 04:37:12,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:12,996 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] [2025-02-06 04:37:12,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:37:12,996 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 04:37:12,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:12,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1023503031, now seen corresponding path program 1 times [2025-02-06 04:37:12,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:12,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137361908] [2025-02-06 04:37:12,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:37:12,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:13,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:13,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:13,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:13,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:13,168 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 04:37:13,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:13,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137361908] [2025-02-06 04:37:13,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137361908] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:13,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:13,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:37:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850580986] [2025-02-06 04:37:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:13,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:37:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:13,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:37:13,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:37:13,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:13,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 04:37:13,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:13,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:13,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:15,638 INFO L124 PetriNetUnfolderBase]: 37141/53406 cut-off events. [2025-02-06 04:37:15,639 INFO L125 PetriNetUnfolderBase]: For 6178/6178 co-relation queries the response was YES. [2025-02-06 04:37:15,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112069 conditions, 53406 events. 37141/53406 cut-off events. For 6178/6178 co-relation queries the response was YES. Maximal size of possible extension queue 2202. Compared 373035 event pairs, 9960 based on Foata normal form. 751/52213 useless extension candidates. Maximal degree in co-relation 40621. Up to 17109 conditions per place. [2025-02-06 04:37:16,000 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 119 selfloop transitions, 19 changer transitions 0/149 dead transitions. [2025-02-06 04:37:16,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 149 transitions, 665 flow [2025-02-06 04:37:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:37:16,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:37:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 203 transitions. [2025-02-06 04:37:16,005 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.688135593220339 [2025-02-06 04:37:16,005 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 148 flow. Second operand 5 states and 203 transitions. [2025-02-06 04:37:16,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 149 transitions, 665 flow [2025-02-06 04:37:16,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 149 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:37:16,015 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 252 flow [2025-02-06 04:37:16,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2025-02-06 04:37:16,016 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2025-02-06 04:37:16,017 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 252 flow [2025-02-06 04:37:16,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 04:37:16,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:16,017 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] [2025-02-06 04:37:16,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:37:16,017 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 04:37:16,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:16,018 INFO L85 PathProgramCache]: Analyzing trace with hash 205774361, now seen corresponding path program 2 times [2025-02-06 04:37:16,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:16,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622481884] [2025-02-06 04:37:16,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:37:16,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:16,033 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:16,041 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:16,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:37:16,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:16,101 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 04:37:16,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:16,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622481884] [2025-02-06 04:37:16,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622481884] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:16,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:16,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:37:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324578008] [2025-02-06 04:37:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:16,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:37:16,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:16,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:37:16,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:37:16,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 59 [2025-02-06 04:37:16,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 04:37:16,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:16,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 59 [2025-02-06 04:37:16,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:18,051 INFO L124 PetriNetUnfolderBase]: 33558/47690 cut-off events. [2025-02-06 04:37:18,051 INFO L125 PetriNetUnfolderBase]: For 26000/26046 co-relation queries the response was YES. [2025-02-06 04:37:18,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121102 conditions, 47690 events. 33558/47690 cut-off events. For 26000/26046 co-relation queries the response was YES. Maximal size of possible extension queue 1939. Compared 324950 event pairs, 19143 based on Foata normal form. 4685/51989 useless extension candidates. Maximal degree in co-relation 62474. Up to 38443 conditions per place. [2025-02-06 04:37:18,205 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 97 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2025-02-06 04:37:18,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 110 transitions, 597 flow [2025-02-06 04:37:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:37:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:37:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2025-02-06 04:37:18,208 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6045197740112994 [2025-02-06 04:37:18,208 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 252 flow. Second operand 3 states and 107 transitions. [2025-02-06 04:37:18,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 110 transitions, 597 flow [2025-02-06 04:37:18,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 597 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:37:18,214 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 273 flow [2025-02-06 04:37:18,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2025-02-06 04:37:18,215 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2025-02-06 04:37:18,216 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 273 flow [2025-02-06 04:37:18,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 04:37:18,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:18,216 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] [2025-02-06 04:37:18,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:37:18,216 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 04:37:18,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash -149089447, now seen corresponding path program 1 times [2025-02-06 04:37:18,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:18,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540004191] [2025-02-06 04:37:18,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:37:18,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:18,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:18,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:18,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:18,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:18,358 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 04:37:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:18,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540004191] [2025-02-06 04:37:18,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540004191] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:18,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:18,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:37:18,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133044602] [2025-02-06 04:37:18,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:18,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:37:18,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:18,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:37:18,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:37:18,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:18,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 04:37:18,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:18,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:18,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:20,428 INFO L124 PetriNetUnfolderBase]: 31674/46277 cut-off events. [2025-02-06 04:37:20,429 INFO L125 PetriNetUnfolderBase]: For 30065/30095 co-relation queries the response was YES. [2025-02-06 04:37:20,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120096 conditions, 46277 events. 31674/46277 cut-off events. For 30065/30095 co-relation queries the response was YES. Maximal size of possible extension queue 1920. Compared 328086 event pairs, 8273 based on Foata normal form. 548/46492 useless extension candidates. Maximal degree in co-relation 64535. Up to 15584 conditions per place. [2025-02-06 04:37:20,636 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 112 selfloop transitions, 24 changer transitions 3/150 dead transitions. [2025-02-06 04:37:20,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 150 transitions, 805 flow [2025-02-06 04:37:20,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:37:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:37:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2025-02-06 04:37:20,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6745762711864407 [2025-02-06 04:37:20,638 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 273 flow. Second operand 5 states and 199 transitions. [2025-02-06 04:37:20,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 150 transitions, 805 flow [2025-02-06 04:37:20,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 150 transitions, 783 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:37:20,679 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 364 flow [2025-02-06 04:37:20,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=364, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2025-02-06 04:37:20,680 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2025-02-06 04:37:20,680 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 364 flow [2025-02-06 04:37:20,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 04:37:20,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:20,680 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] [2025-02-06 04:37:20,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:37:20,681 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 04:37:20,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:20,681 INFO L85 PathProgramCache]: Analyzing trace with hash -260426727, now seen corresponding path program 2 times [2025-02-06 04:37:20,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:20,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636215758] [2025-02-06 04:37:20,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:37:20,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:20,690 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:20,699 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:20,700 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:37:20,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:20,836 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 04:37:20,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:20,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636215758] [2025-02-06 04:37:20,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636215758] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:20,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:20,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:37:20,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509274096] [2025-02-06 04:37:20,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:20,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:37:20,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:20,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:37:20,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:37:20,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:20,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 04:37:20,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:20,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:20,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:23,170 INFO L124 PetriNetUnfolderBase]: 31731/47375 cut-off events. [2025-02-06 04:37:23,170 INFO L125 PetriNetUnfolderBase]: For 43137/43151 co-relation queries the response was YES. [2025-02-06 04:37:23,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129960 conditions, 47375 events. 31731/47375 cut-off events. For 43137/43151 co-relation queries the response was YES. Maximal size of possible extension queue 2014. Compared 348653 event pairs, 6398 based on Foata normal form. 328/47331 useless extension candidates. Maximal degree in co-relation 81956. Up to 18586 conditions per place. [2025-02-06 04:37:23,347 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 130 selfloop transitions, 61 changer transitions 7/209 dead transitions. [2025-02-06 04:37:23,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 209 transitions, 1270 flow [2025-02-06 04:37:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:37:23,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:37:23,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2025-02-06 04:37:23,349 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6751412429378532 [2025-02-06 04:37:23,349 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 364 flow. Second operand 6 states and 239 transitions. [2025-02-06 04:37:23,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 209 transitions, 1270 flow [2025-02-06 04:37:23,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 209 transitions, 1224 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:37:23,372 INFO L231 Difference]: Finished difference. Result has 77 places, 116 transitions, 773 flow [2025-02-06 04:37:23,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=773, PETRI_PLACES=77, PETRI_TRANSITIONS=116} [2025-02-06 04:37:23,373 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2025-02-06 04:37:23,373 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 116 transitions, 773 flow [2025-02-06 04:37:23,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 04:37:23,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:23,373 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] [2025-02-06 04:37:23,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:37:23,374 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 04:37:23,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2058507545, now seen corresponding path program 3 times [2025-02-06 04:37:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:23,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230549550] [2025-02-06 04:37:23,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:37:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:23,381 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:23,385 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:23,385 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:37:23,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:23,409 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 04:37:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:23,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230549550] [2025-02-06 04:37:23,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230549550] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:23,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:23,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:37:23,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328757959] [2025-02-06 04:37:23,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:23,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:37:23,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:23,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:37:23,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:37:23,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 59 [2025-02-06 04:37:23,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 116 transitions, 773 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:23,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:23,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 59 [2025-02-06 04:37:23,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:26,402 INFO L124 PetriNetUnfolderBase]: 42584/60097 cut-off events. [2025-02-06 04:37:26,403 INFO L125 PetriNetUnfolderBase]: For 97660/97670 co-relation queries the response was YES. [2025-02-06 04:37:26,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183013 conditions, 60097 events. 42584/60097 cut-off events. For 97660/97670 co-relation queries the response was YES. Maximal size of possible extension queue 2180. Compared 402185 event pairs, 26316 based on Foata normal form. 632/60715 useless extension candidates. Maximal degree in co-relation 124377. Up to 52328 conditions per place. [2025-02-06 04:37:26,669 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 162 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2025-02-06 04:37:26,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 169 transitions, 1457 flow [2025-02-06 04:37:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:37:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:37:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-02-06 04:37:26,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5706214689265536 [2025-02-06 04:37:26,671 INFO L175 Difference]: Start difference. First operand has 77 places, 116 transitions, 773 flow. Second operand 3 states and 101 transitions. [2025-02-06 04:37:26,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 169 transitions, 1457 flow [2025-02-06 04:37:26,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 169 transitions, 1441 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-02-06 04:37:26,762 INFO L231 Difference]: Finished difference. Result has 80 places, 116 transitions, 771 flow [2025-02-06 04:37:26,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=771, PETRI_PLACES=80, PETRI_TRANSITIONS=116} [2025-02-06 04:37:26,763 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 16 predicate places. [2025-02-06 04:37:26,763 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 116 transitions, 771 flow [2025-02-06 04:37:26,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:26,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:26,763 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] [2025-02-06 04:37:26,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:37:26,764 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 04:37:26,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1222303837, now seen corresponding path program 4 times [2025-02-06 04:37:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212739939] [2025-02-06 04:37:26,764 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:37:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:26,771 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-02-06 04:37:26,780 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:26,781 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:37:26,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:26,920 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 04:37:26,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212739939] [2025-02-06 04:37:26,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212739939] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:26,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:26,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:37:26,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581492813] [2025-02-06 04:37:26,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:26,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:37:26,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:26,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:37:26,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:37:26,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:26,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 116 transitions, 771 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 04:37:26,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:26,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:26,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:29,495 INFO L124 PetriNetUnfolderBase]: 30620/45663 cut-off events. [2025-02-06 04:37:29,495 INFO L125 PetriNetUnfolderBase]: For 90393/90435 co-relation queries the response was YES. [2025-02-06 04:37:29,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148110 conditions, 45663 events. 30620/45663 cut-off events. For 90393/90435 co-relation queries the response was YES. Maximal size of possible extension queue 1901. Compared 333734 event pairs, 8399 based on Foata normal form. 376/45436 useless extension candidates. Maximal degree in co-relation 104430. Up to 21077 conditions per place. [2025-02-06 04:37:29,704 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 127 selfloop transitions, 47 changer transitions 12/197 dead transitions. [2025-02-06 04:37:29,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 197 transitions, 1526 flow [2025-02-06 04:37:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:37:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:37:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2025-02-06 04:37:29,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6711864406779661 [2025-02-06 04:37:29,706 INFO L175 Difference]: Start difference. First operand has 80 places, 116 transitions, 771 flow. Second operand 5 states and 198 transitions. [2025-02-06 04:37:29,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 197 transitions, 1526 flow [2025-02-06 04:37:29,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 197 transitions, 1510 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:37:29,866 INFO L231 Difference]: Finished difference. Result has 84 places, 125 transitions, 998 flow [2025-02-06 04:37:29,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=998, PETRI_PLACES=84, PETRI_TRANSITIONS=125} [2025-02-06 04:37:29,868 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2025-02-06 04:37:29,869 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 125 transitions, 998 flow [2025-02-06 04:37:29,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 04:37:29,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:29,870 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] [2025-02-06 04:37:29,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:37:29,870 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 2 more)] === [2025-02-06 04:37:29,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1537861743, now seen corresponding path program 5 times [2025-02-06 04:37:29,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:29,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399025002] [2025-02-06 04:37:29,872 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:37:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:29,880 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:29,890 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:29,891 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:37:29,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:30,000 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 04:37:30,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:30,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399025002] [2025-02-06 04:37:30,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399025002] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:30,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:30,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:37:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006453355] [2025-02-06 04:37:30,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:30,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:37:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:30,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:37:30,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:37:30,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:30,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 125 transitions, 998 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 04:37:30,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:30,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:30,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:32,350 INFO L124 PetriNetUnfolderBase]: 26488/39153 cut-off events. [2025-02-06 04:37:32,351 INFO L125 PetriNetUnfolderBase]: For 91625/91753 co-relation queries the response was YES. [2025-02-06 04:37:32,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132854 conditions, 39153 events. 26488/39153 cut-off events. For 91625/91753 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 276943 event pairs, 6061 based on Foata normal form. 442/38900 useless extension candidates. Maximal degree in co-relation 91009. Up to 14975 conditions per place. [2025-02-06 04:37:32,534 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 129 selfloop transitions, 72 changer transitions 10/222 dead transitions. [2025-02-06 04:37:32,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 222 transitions, 1833 flow [2025-02-06 04:37:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:37:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:37:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2025-02-06 04:37:32,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2025-02-06 04:37:32,537 INFO L175 Difference]: Start difference. First operand has 84 places, 125 transitions, 998 flow. Second operand 6 states and 238 transitions. [2025-02-06 04:37:32,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 222 transitions, 1833 flow [2025-02-06 04:37:32,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 222 transitions, 1770 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 04:37:32,613 INFO L231 Difference]: Finished difference. Result has 88 places, 128 transitions, 1153 flow [2025-02-06 04:37:32,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1153, PETRI_PLACES=88, PETRI_TRANSITIONS=128} [2025-02-06 04:37:32,614 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 24 predicate places. [2025-02-06 04:37:32,616 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 128 transitions, 1153 flow [2025-02-06 04:37:32,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 04:37:32,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:32,617 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] [2025-02-06 04:37:32,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:37:32,617 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 2 more)] === [2025-02-06 04:37:32,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash 199475961, now seen corresponding path program 6 times [2025-02-06 04:37:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:32,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796342405] [2025-02-06 04:37:32,618 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:37:32,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:32,628 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:32,634 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:32,634 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:37:32,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:32,756 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 04:37:32,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:32,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796342405] [2025-02-06 04:37:32,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796342405] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:32,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:32,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:37:32,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018733489] [2025-02-06 04:37:32,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:32,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:37:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:32,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:37:32,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:37:32,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:32,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 128 transitions, 1153 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 04:37:32,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:32,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:32,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:35,227 INFO L124 PetriNetUnfolderBase]: 26979/40212 cut-off events. [2025-02-06 04:37:35,227 INFO L125 PetriNetUnfolderBase]: For 121571/121681 co-relation queries the response was YES. [2025-02-06 04:37:35,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142961 conditions, 40212 events. 26979/40212 cut-off events. For 121571/121681 co-relation queries the response was YES. Maximal size of possible extension queue 1803. Compared 288760 event pairs, 6602 based on Foata normal form. 445/39984 useless extension candidates. Maximal degree in co-relation 98491. Up to 14937 conditions per place. [2025-02-06 04:37:35,439 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 155 selfloop transitions, 91 changer transitions 3/260 dead transitions. [2025-02-06 04:37:35,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 260 transitions, 2327 flow [2025-02-06 04:37:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:37:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:37:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 304 transitions. [2025-02-06 04:37:35,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2025-02-06 04:37:35,441 INFO L175 Difference]: Start difference. First operand has 88 places, 128 transitions, 1153 flow. Second operand 8 states and 304 transitions. [2025-02-06 04:37:35,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 260 transitions, 2327 flow [2025-02-06 04:37:35,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 260 transitions, 2138 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-06 04:37:35,720 INFO L231 Difference]: Finished difference. Result has 92 places, 147 transitions, 1468 flow [2025-02-06 04:37:35,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1468, PETRI_PLACES=92, PETRI_TRANSITIONS=147} [2025-02-06 04:37:35,721 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 28 predicate places. [2025-02-06 04:37:35,721 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 147 transitions, 1468 flow [2025-02-06 04:37:35,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 04:37:35,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:35,722 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:37:35,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:37:35,722 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 2 more)] === [2025-02-06 04:37:35,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1157453703, now seen corresponding path program 1 times [2025-02-06 04:37:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:35,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696058464] [2025-02-06 04:37:35,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:37:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:35,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:35,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:35,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:35,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:35,840 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 04:37:35,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:35,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696058464] [2025-02-06 04:37:35,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696058464] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:35,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:35,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:37:35,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330177175] [2025-02-06 04:37:35,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:35,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:37:35,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:35,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:37:35,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:37:35,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:35,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 147 transitions, 1468 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 04:37:35,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:35,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:35,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:38,400 INFO L124 PetriNetUnfolderBase]: 23855/35954 cut-off events. [2025-02-06 04:37:38,400 INFO L125 PetriNetUnfolderBase]: For 107750/107824 co-relation queries the response was YES. [2025-02-06 04:37:38,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128645 conditions, 35954 events. 23855/35954 cut-off events. For 107750/107824 co-relation queries the response was YES. Maximal size of possible extension queue 1620. Compared 259171 event pairs, 5913 based on Foata normal form. 726/36103 useless extension candidates. Maximal degree in co-relation 92156. Up to 13480 conditions per place. [2025-02-06 04:37:38,534 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 150 selfloop transitions, 98 changer transitions 26/285 dead transitions. [2025-02-06 04:37:38,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 285 transitions, 2740 flow [2025-02-06 04:37:38,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:37:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:37:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 308 transitions. [2025-02-06 04:37:38,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2025-02-06 04:37:38,536 INFO L175 Difference]: Start difference. First operand has 92 places, 147 transitions, 1468 flow. Second operand 8 states and 308 transitions. [2025-02-06 04:37:38,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 285 transitions, 2740 flow [2025-02-06 04:37:38,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 285 transitions, 2597 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 04:37:38,624 INFO L231 Difference]: Finished difference. Result has 98 places, 154 transitions, 1662 flow [2025-02-06 04:37:38,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1662, PETRI_PLACES=98, PETRI_TRANSITIONS=154} [2025-02-06 04:37:38,625 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 34 predicate places. [2025-02-06 04:37:38,625 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 154 transitions, 1662 flow [2025-02-06 04:37:38,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 04:37:38,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:38,625 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] [2025-02-06 04:37:38,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:37:38,626 INFO L396 AbstractCegarLoop]: === Iteration 11 === 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 04:37:38,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:38,626 INFO L85 PathProgramCache]: Analyzing trace with hash 7855941, now seen corresponding path program 7 times [2025-02-06 04:37:38,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:38,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219538711] [2025-02-06 04:37:38,626 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:37:38,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:38,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:38,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:38,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:38,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:38,708 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 04:37:38,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219538711] [2025-02-06 04:37:38,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219538711] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:38,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:38,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:37:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145922122] [2025-02-06 04:37:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:38,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:37:38,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:38,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:37:38,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:37:38,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:38,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 154 transitions, 1662 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 04:37:38,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:38,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:38,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:40,621 INFO L124 PetriNetUnfolderBase]: 17502/26968 cut-off events. [2025-02-06 04:37:40,621 INFO L125 PetriNetUnfolderBase]: For 87000/87068 co-relation queries the response was YES. [2025-02-06 04:37:40,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97801 conditions, 26968 events. 17502/26968 cut-off events. For 87000/87068 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 191622 event pairs, 4571 based on Foata normal form. 276/26934 useless extension candidates. Maximal degree in co-relation 75860. Up to 9875 conditions per place. [2025-02-06 04:37:40,719 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 131 selfloop transitions, 108 changer transitions 26/276 dead transitions. [2025-02-06 04:37:40,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 276 transitions, 2970 flow [2025-02-06 04:37:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:37:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:37:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2025-02-06 04:37:40,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6207627118644068 [2025-02-06 04:37:40,721 INFO L175 Difference]: Start difference. First operand has 98 places, 154 transitions, 1662 flow. Second operand 8 states and 293 transitions. [2025-02-06 04:37:40,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 276 transitions, 2970 flow [2025-02-06 04:37:40,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 276 transitions, 2925 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:37:40,792 INFO L231 Difference]: Finished difference. Result has 105 places, 162 transitions, 2012 flow [2025-02-06 04:37:40,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2012, PETRI_PLACES=105, PETRI_TRANSITIONS=162} [2025-02-06 04:37:40,793 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 41 predicate places. [2025-02-06 04:37:40,793 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 162 transitions, 2012 flow [2025-02-06 04:37:40,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 04:37:40,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:40,793 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] [2025-02-06 04:37:40,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 04:37:40,794 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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 04:37:40,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1443681723, now seen corresponding path program 8 times [2025-02-06 04:37:40,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:40,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979145758] [2025-02-06 04:37:40,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:37:40,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:40,807 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:40,816 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:40,818 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:37:40,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:40,973 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 04:37:40,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:40,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979145758] [2025-02-06 04:37:40,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979145758] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:40,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:40,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:37:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286984652] [2025-02-06 04:37:40,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:40,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:37:40,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:40,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:37:40,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:37:40,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:40,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 162 transitions, 2012 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 04:37:40,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:40,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:40,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:43,351 INFO L124 PetriNetUnfolderBase]: 16928/26148 cut-off events. [2025-02-06 04:37:43,352 INFO L125 PetriNetUnfolderBase]: For 99501/99517 co-relation queries the response was YES. [2025-02-06 04:37:43,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96268 conditions, 26148 events. 16928/26148 cut-off events. For 99501/99517 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 185822 event pairs, 4421 based on Foata normal form. 64/25894 useless extension candidates. Maximal degree in co-relation 73022. Up to 9962 conditions per place. [2025-02-06 04:37:43,497 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 113 selfloop transitions, 140 changer transitions 16/280 dead transitions. [2025-02-06 04:37:43,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 280 transitions, 3294 flow [2025-02-06 04:37:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:37:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:37:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2025-02-06 04:37:43,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.586864406779661 [2025-02-06 04:37:43,499 INFO L175 Difference]: Start difference. First operand has 105 places, 162 transitions, 2012 flow. Second operand 8 states and 277 transitions. [2025-02-06 04:37:43,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 280 transitions, 3294 flow [2025-02-06 04:37:43,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 280 transitions, 3235 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:37:43,614 INFO L231 Difference]: Finished difference. Result has 111 places, 188 transitions, 2592 flow [2025-02-06 04:37:43,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2592, PETRI_PLACES=111, PETRI_TRANSITIONS=188} [2025-02-06 04:37:43,614 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 47 predicate places. [2025-02-06 04:37:43,615 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 188 transitions, 2592 flow [2025-02-06 04:37:43,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 04:37:43,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:43,615 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] [2025-02-06 04:37:43,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 04:37:43,616 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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 04:37:43,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1520137715, now seen corresponding path program 9 times [2025-02-06 04:37:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:43,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980358120] [2025-02-06 04:37:43,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:37:43,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:43,621 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:43,624 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:43,624 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:37:43,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:43,699 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 04:37:43,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980358120] [2025-02-06 04:37:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980358120] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:43,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:43,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:37:43,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111723077] [2025-02-06 04:37:43,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:43,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:37:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:43,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:37:43,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:37:43,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:43,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 188 transitions, 2592 flow. Second operand has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 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 04:37:43,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:43,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:43,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:45,641 INFO L124 PetriNetUnfolderBase]: 15936/24602 cut-off events. [2025-02-06 04:37:45,642 INFO L125 PetriNetUnfolderBase]: For 117623/117635 co-relation queries the response was YES. [2025-02-06 04:37:45,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93161 conditions, 24602 events. 15936/24602 cut-off events. For 117623/117635 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 173637 event pairs, 4169 based on Foata normal form. 282/24546 useless extension candidates. Maximal degree in co-relation 69622. Up to 9172 conditions per place. [2025-02-06 04:37:45,744 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 148 selfloop transitions, 146 changer transitions 23/328 dead transitions. [2025-02-06 04:37:45,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 328 transitions, 3991 flow [2025-02-06 04:37:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 04:37:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 04:37:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 388 transitions. [2025-02-06 04:37:45,746 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5480225988700564 [2025-02-06 04:37:45,746 INFO L175 Difference]: Start difference. First operand has 111 places, 188 transitions, 2592 flow. Second operand 12 states and 388 transitions. [2025-02-06 04:37:45,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 328 transitions, 3991 flow [2025-02-06 04:37:45,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 328 transitions, 3754 flow, removed 30 selfloop flow, removed 5 redundant places. [2025-02-06 04:37:45,862 INFO L231 Difference]: Finished difference. Result has 119 places, 194 transitions, 2765 flow [2025-02-06 04:37:45,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2765, PETRI_PLACES=119, PETRI_TRANSITIONS=194} [2025-02-06 04:37:45,862 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 55 predicate places. [2025-02-06 04:37:45,863 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 194 transitions, 2765 flow [2025-02-06 04:37:45,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 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 04:37:45,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:45,863 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] [2025-02-06 04:37:45,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 04:37:45,863 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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 04:37:45,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash -137170547, now seen corresponding path program 10 times [2025-02-06 04:37:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:45,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777288703] [2025-02-06 04:37:45,864 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:37:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:45,868 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-02-06 04:37:45,872 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:45,872 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:37:45,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:46,030 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 04:37:46,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:46,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777288703] [2025-02-06 04:37:46,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777288703] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:46,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:46,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:37:46,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071365583] [2025-02-06 04:37:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:46,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:37:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:46,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:37:46,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:37:46,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:46,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 194 transitions, 2765 flow. Second operand has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 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 04:37:46,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:46,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:46,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:48,419 INFO L124 PetriNetUnfolderBase]: 16049/24866 cut-off events. [2025-02-06 04:37:48,420 INFO L125 PetriNetUnfolderBase]: For 144871/144883 co-relation queries the response was YES. [2025-02-06 04:37:48,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98474 conditions, 24866 events. 16049/24866 cut-off events. For 144871/144883 co-relation queries the response was YES. Maximal size of possible extension queue 1089. Compared 176935 event pairs, 4480 based on Foata normal form. 120/24650 useless extension candidates. Maximal degree in co-relation 73351. Up to 9393 conditions per place. [2025-02-06 04:37:48,522 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 118 selfloop transitions, 122 changer transitions 70/321 dead transitions. [2025-02-06 04:37:48,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 321 transitions, 4120 flow [2025-02-06 04:37:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 04:37:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 04:37:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 378 transitions. [2025-02-06 04:37:48,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5338983050847458 [2025-02-06 04:37:48,524 INFO L175 Difference]: Start difference. First operand has 119 places, 194 transitions, 2765 flow. Second operand 12 states and 378 transitions. [2025-02-06 04:37:48,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 321 transitions, 4120 flow [2025-02-06 04:37:48,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 321 transitions, 3988 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 04:37:48,678 INFO L231 Difference]: Finished difference. Result has 129 places, 170 transitions, 2431 flow [2025-02-06 04:37:48,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2431, PETRI_PLACES=129, PETRI_TRANSITIONS=170} [2025-02-06 04:37:48,678 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 65 predicate places. [2025-02-06 04:37:48,679 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 170 transitions, 2431 flow [2025-02-06 04:37:48,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 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 04:37:48,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:48,679 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] [2025-02-06 04:37:48,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 04:37:48,679 INFO L396 AbstractCegarLoop]: === Iteration 15 === 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 04:37:48,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash 307800555, now seen corresponding path program 2 times [2025-02-06 04:37:48,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:48,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040055782] [2025-02-06 04:37:48,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:37:48,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:48,684 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:48,687 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:48,687 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:37:48,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:48,762 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 04:37:48,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:48,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040055782] [2025-02-06 04:37:48,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040055782] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:48,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:48,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:37:48,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155315155] [2025-02-06 04:37:48,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:48,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:37:48,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:48,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:37:48,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:37:48,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:48,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 170 transitions, 2431 flow. Second operand has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 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 04:37:48,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:48,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:48,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:50,726 INFO L124 PetriNetUnfolderBase]: 15387/23819 cut-off events. [2025-02-06 04:37:50,727 INFO L125 PetriNetUnfolderBase]: For 155220/155220 co-relation queries the response was YES. [2025-02-06 04:37:50,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95867 conditions, 23819 events. 15387/23819 cut-off events. For 155220/155220 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 167996 event pairs, 4424 based on Foata normal form. 274/23771 useless extension candidates. Maximal degree in co-relation 70596. Up to 9101 conditions per place. [2025-02-06 04:37:50,828 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 140 selfloop transitions, 122 changer transitions 36/309 dead transitions. [2025-02-06 04:37:50,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 309 transitions, 3811 flow [2025-02-06 04:37:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 04:37:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 04:37:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 389 transitions. [2025-02-06 04:37:50,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5494350282485876 [2025-02-06 04:37:50,830 INFO L175 Difference]: Start difference. First operand has 129 places, 170 transitions, 2431 flow. Second operand 12 states and 389 transitions. [2025-02-06 04:37:50,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 309 transitions, 3811 flow [2025-02-06 04:37:50,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 309 transitions, 3493 flow, removed 18 selfloop flow, removed 9 redundant places. [2025-02-06 04:37:50,992 INFO L231 Difference]: Finished difference. Result has 130 places, 169 transitions, 2381 flow [2025-02-06 04:37:50,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2381, PETRI_PLACES=130, PETRI_TRANSITIONS=169} [2025-02-06 04:37:50,992 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 66 predicate places. [2025-02-06 04:37:50,992 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 169 transitions, 2381 flow [2025-02-06 04:37:50,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 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 04:37:50,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:50,993 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] [2025-02-06 04:37:50,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 04:37:50,993 INFO L396 AbstractCegarLoop]: === Iteration 16 === 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 04:37:50,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:50,993 INFO L85 PathProgramCache]: Analyzing trace with hash 794267069, now seen corresponding path program 11 times [2025-02-06 04:37:50,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:50,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183929962] [2025-02-06 04:37:50,994 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:37:50,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:51,001 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:51,009 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:51,009 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:37:51,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:51,070 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 04:37:51,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:51,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183929962] [2025-02-06 04:37:51,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183929962] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:51,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:51,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:37:51,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140915143] [2025-02-06 04:37:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:51,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:37:51,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:51,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:37:51,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:37:51,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:51,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 169 transitions, 2381 flow. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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 04:37:51,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:51,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:51,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:52,644 INFO L124 PetriNetUnfolderBase]: 11928/18656 cut-off events. [2025-02-06 04:37:52,644 INFO L125 PetriNetUnfolderBase]: For 118279/118299 co-relation queries the response was YES. [2025-02-06 04:37:52,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74891 conditions, 18656 events. 11928/18656 cut-off events. For 118279/118299 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 129904 event pairs, 3544 based on Foata normal form. 96/18562 useless extension candidates. Maximal degree in co-relation 56110. Up to 7373 conditions per place. [2025-02-06 04:37:52,740 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 96 selfloop transitions, 108 changer transitions 23/236 dead transitions. [2025-02-06 04:37:52,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 236 transitions, 3136 flow [2025-02-06 04:37:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:37:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:37:52,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 281 transitions. [2025-02-06 04:37:52,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291902071563088 [2025-02-06 04:37:52,742 INFO L175 Difference]: Start difference. First operand has 130 places, 169 transitions, 2381 flow. Second operand 9 states and 281 transitions. [2025-02-06 04:37:52,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 236 transitions, 3136 flow [2025-02-06 04:37:52,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 236 transitions, 3084 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 04:37:52,882 INFO L231 Difference]: Finished difference. Result has 135 places, 149 transitions, 2222 flow [2025-02-06 04:37:52,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2222, PETRI_PLACES=135, PETRI_TRANSITIONS=149} [2025-02-06 04:37:52,883 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 71 predicate places. [2025-02-06 04:37:52,883 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 149 transitions, 2222 flow [2025-02-06 04:37:52,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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 04:37:52,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:52,883 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] [2025-02-06 04:37:52,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 04:37:52,884 INFO L396 AbstractCegarLoop]: === Iteration 17 === 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 04:37:52,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:52,884 INFO L85 PathProgramCache]: Analyzing trace with hash 376962211, now seen corresponding path program 3 times [2025-02-06 04:37:52,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:52,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102589286] [2025-02-06 04:37:52,884 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:37:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:52,890 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:52,894 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:52,894 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:37:52,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:52,974 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 04:37:52,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:52,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102589286] [2025-02-06 04:37:52,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102589286] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:52,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:52,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:37:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653207511] [2025-02-06 04:37:52,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:52,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:37:52,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:52,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:37:52,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:37:52,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-02-06 04:37:52,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 149 transitions, 2222 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 04:37:52,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:52,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-02-06 04:37:52,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand