./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:43:57,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:43:57,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:43:57,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:43:57,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:43:57,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:43:57,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:43:57,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:43:57,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:43:57,088 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:43:57,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:43:57,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:43:57,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:43:57,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:43:57,089 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:43:57,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:43:57,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:43:57,090 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:43:57,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:43:57,090 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:43:57,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:43:57,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:43:57,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:43:57,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:43:57,090 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:43:57,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:43:57,091 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:43:57,091 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:43:57,091 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:43:57,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:43:57,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:43:57,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:43:57,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:43:57,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:43:57,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:43:57,092 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:43:57,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:43:57,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:43:57,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:43:57,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:43:57,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:43:57,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:43:57,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:43:57,092 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/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 -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2025-03-17 06:43:57,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:43:57,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:43:57,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:43:57,298 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:43:57,298 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:43:57,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2025-03-17 06:43:58,453 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853f8e07a/8d0dd5000f8a4996843bbabd67566a07/FLAGe05855502 [2025-03-17 06:43:58,685 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:43:58,687 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2025-03-17 06:43:58,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853f8e07a/8d0dd5000f8a4996843bbabd67566a07/FLAGe05855502 [2025-03-17 06:43:58,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853f8e07a/8d0dd5000f8a4996843bbabd67566a07 [2025-03-17 06:43:58,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:43:58,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:43:58,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:43:58,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:43:58,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:43:58,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:58,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3266f5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58, skipping insertion in model container [2025-03-17 06:43:58,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:58,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:43:58,870 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2025-03-17 06:43:58,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:43:58,887 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:43:58,909 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2025-03-17 06:43:58,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:43:58,926 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:43:58,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58 WrapperNode [2025-03-17 06:43:58,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:43:58,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:43:58,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:43:58,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:43:58,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:58,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:58,964 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 237 [2025-03-17 06:43:58,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:43:58,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:43:58,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:43:58,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:43:58,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:58,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:58,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:58,997 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-17 06:43:58,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:58,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:59,004 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:59,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:59,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:59,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:59,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:43:59,015 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:43:59,015 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:43:59,015 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:43:59,016 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (1/1) ... [2025-03-17 06:43:59,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:43:59,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:43:59,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 06:43:59,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 06:43:59,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:43:59,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 06:43:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 06:43:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 06:43:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:43:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:43:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:43:59,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:43:59,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:43:59,073 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:43:59,169 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:43:59,170 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:43:59,443 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:43:59,444 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:43:59,712 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:43:59,713 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:43:59,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:43:59 BoogieIcfgContainer [2025-03-17 06:43:59,713 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:43:59,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:43:59,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:43:59,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:43:59,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:43:58" (1/3) ... [2025-03-17 06:43:59,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2122a036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:43:59, skipping insertion in model container [2025-03-17 06:43:59,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:58" (2/3) ... [2025-03-17 06:43:59,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2122a036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:43:59, skipping insertion in model container [2025-03-17 06:43:59,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:43:59" (3/3) ... [2025-03-17 06:43:59,721 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2025-03-17 06:43:59,733 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:43:59,734 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-3-nl.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-03-17 06:43:59,734 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:43:59,782 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 06:43:59,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 42 transitions, 105 flow [2025-03-17 06:43:59,834 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2025-03-17 06:43:59,836 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 06:43:59,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 7/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-03-17 06:43:59,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 42 transitions, 105 flow [2025-03-17 06:43:59,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 38 transitions, 94 flow [2025-03-17 06:43:59,848 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:43:59,857 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;@335558f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:43:59,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 06:43:59,871 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:43:59,871 INFO L124 PetriNetUnfolderBase]: 7/37 cut-off events. [2025-03-17 06:43:59,871 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 06:43:59,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:43:59,873 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] [2025-03-17 06:43:59,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:43:59,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:43:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 114516136, now seen corresponding path program 1 times [2025-03-17 06:43:59,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:43:59,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049601679] [2025-03-17 06:43:59,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:43:59,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:43:59,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 06:43:59,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 06:43:59,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:43:59,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:44:00,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:00,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049601679] [2025-03-17 06:44:00,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049601679] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:00,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:00,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:44:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174344081] [2025-03-17 06:44:00,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:00,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:44:00,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:00,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:44:00,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:44:00,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2025-03-17 06:44:00,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:44:00,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:00,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2025-03-17 06:44:00,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:00,314 INFO L124 PetriNetUnfolderBase]: 1088/1694 cut-off events. [2025-03-17 06:44:00,314 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2025-03-17 06:44:00,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3273 conditions, 1694 events. 1088/1694 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7407 event pairs, 892 based on Foata normal form. 0/1559 useless extension candidates. Maximal degree in co-relation 3037. Up to 1453 conditions per place. [2025-03-17 06:44:00,335 INFO L140 encePairwiseOnDemand]: 40/42 looper letters, 30 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2025-03-17 06:44:00,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 150 flow [2025-03-17 06:44:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:44:00,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 06:44:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2025-03-17 06:44:00,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2025-03-17 06:44:00,347 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 94 flow. Second operand 2 states and 50 transitions. [2025-03-17 06:44:00,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 150 flow [2025-03-17 06:44:00,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:00,355 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 78 flow [2025-03-17 06:44:00,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2025-03-17 06:44:00,360 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2025-03-17 06:44:00,362 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 78 flow [2025-03-17 06:44:00,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:44:00,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:00,362 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] [2025-03-17 06:44:00,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:44:00,363 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:00,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash -658163019, now seen corresponding path program 1 times [2025-03-17 06:44:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:00,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940693440] [2025-03-17 06:44:00,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:44:00,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:00,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 06:44:00,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 06:44:00,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:00,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:44:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940693440] [2025-03-17 06:44:00,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940693440] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:00,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:00,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 06:44:00,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838615901] [2025-03-17 06:44:00,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:00,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:44:00,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:00,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:44:00,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:44:00,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2025-03-17 06:44:00,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-17 06:44:00,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:00,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2025-03-17 06:44:00,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:00,918 INFO L124 PetriNetUnfolderBase]: 1208/1908 cut-off events. [2025-03-17 06:44:00,919 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-03-17 06:44:00,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3605 conditions, 1908 events. 1208/1908 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8582 event pairs, 999 based on Foata normal form. 87/1846 useless extension candidates. Maximal degree in co-relation 3602. Up to 1453 conditions per place. [2025-03-17 06:44:00,934 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 29 selfloop transitions, 2 changer transitions 16/53 dead transitions. [2025-03-17 06:44:00,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 209 flow [2025-03-17 06:44:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:44:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 06:44:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2025-03-17 06:44:00,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2025-03-17 06:44:00,937 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 78 flow. Second operand 4 states and 86 transitions. [2025-03-17 06:44:00,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 209 flow [2025-03-17 06:44:00,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 06:44:00,941 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 96 flow [2025-03-17 06:44:00,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2025-03-17 06:44:00,942 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2025-03-17 06:44:00,942 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 96 flow [2025-03-17 06:44:00,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-17 06:44:00,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:00,943 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] [2025-03-17 06:44:00,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:44:00,943 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:00,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1131564471, now seen corresponding path program 1 times [2025-03-17 06:44:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:00,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401037736] [2025-03-17 06:44:00,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:44:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:00,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 06:44:00,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:44:00,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:00,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:44:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401037736] [2025-03-17 06:44:01,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401037736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:01,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:01,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:44:01,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166654724] [2025-03-17 06:44:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:01,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:44:01,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:01,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:44:01,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:44:01,105 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2025-03-17 06:44:01,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-17 06:44:01,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:01,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2025-03-17 06:44:01,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:01,303 INFO L124 PetriNetUnfolderBase]: 1288/2024 cut-off events. [2025-03-17 06:44:01,304 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2025-03-17 06:44:01,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 2024 events. 1288/2024 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9191 event pairs, 1072 based on Foata normal form. 77/1964 useless extension candidates. Maximal degree in co-relation 4181. Up to 1454 conditions per place. [2025-03-17 06:44:01,316 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 30 selfloop transitions, 2 changer transitions 17/55 dead transitions. [2025-03-17 06:44:01,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 240 flow [2025-03-17 06:44:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:44:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 06:44:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2025-03-17 06:44:01,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2025-03-17 06:44:01,317 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 96 flow. Second operand 4 states and 86 transitions. [2025-03-17 06:44:01,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 240 flow [2025-03-17 06:44:01,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 236 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-17 06:44:01,319 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 108 flow [2025-03-17 06:44:01,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2025-03-17 06:44:01,320 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2025-03-17 06:44:01,320 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 108 flow [2025-03-17 06:44:01,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-17 06:44:01,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:01,320 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] [2025-03-17 06:44:01,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:44:01,321 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:01,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:01,321 INFO L85 PathProgramCache]: Analyzing trace with hash 197960785, now seen corresponding path program 1 times [2025-03-17 06:44:01,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:01,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635493399] [2025-03-17 06:44:01,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:44:01,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:01,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:44:01,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:01,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:01,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:02,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:02,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635493399] [2025-03-17 06:44:02,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635493399] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:02,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:02,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:02,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409082203] [2025-03-17 06:44:02,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:02,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:02,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:02,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:02,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:02,341 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:02,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 108 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:02,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:02,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:02,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:02,938 INFO L124 PetriNetUnfolderBase]: 1957/3008 cut-off events. [2025-03-17 06:44:02,938 INFO L125 PetriNetUnfolderBase]: For 673/673 co-relation queries the response was YES. [2025-03-17 06:44:02,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 3008 events. 1957/3008 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14640 event pairs, 73 based on Foata normal form. 1/2942 useless extension candidates. Maximal degree in co-relation 6585. Up to 1861 conditions per place. [2025-03-17 06:44:02,954 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 102 selfloop transitions, 27 changer transitions 3/137 dead transitions. [2025-03-17 06:44:02,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 137 transitions, 645 flow [2025-03-17 06:44:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:44:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:44:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2025-03-17 06:44:02,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4503968253968254 [2025-03-17 06:44:02,956 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 108 flow. Second operand 12 states and 227 transitions. [2025-03-17 06:44:02,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 137 transitions, 645 flow [2025-03-17 06:44:02,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 137 transitions, 641 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-17 06:44:02,958 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 256 flow [2025-03-17 06:44:02,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=256, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2025-03-17 06:44:02,959 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2025-03-17 06:44:02,959 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 256 flow [2025-03-17 06:44:02,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:02,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:02,959 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] [2025-03-17 06:44:02,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:44:02,959 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:02,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash 975341545, now seen corresponding path program 2 times [2025-03-17 06:44:02,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:02,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549740998] [2025-03-17 06:44:02,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:44:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:02,971 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:02,976 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:02,976 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:44:02,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:03,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:03,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549740998] [2025-03-17 06:44:03,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549740998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:03,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:03,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:44:03,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712429947] [2025-03-17 06:44:03,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:03,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:44:03,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:03,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:44:03,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:44:03,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2025-03-17 06:44:03,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:44:03,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:03,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2025-03-17 06:44:03,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:03,197 INFO L124 PetriNetUnfolderBase]: 1545/2445 cut-off events. [2025-03-17 06:44:03,198 INFO L125 PetriNetUnfolderBase]: For 1607/1624 co-relation queries the response was YES. [2025-03-17 06:44:03,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 2445 events. 1545/2445 cut-off events. For 1607/1624 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11713 event pairs, 399 based on Foata normal form. 47/2429 useless extension candidates. Maximal degree in co-relation 6631. Up to 1922 conditions per place. [2025-03-17 06:44:03,214 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 69 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2025-03-17 06:44:03,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 458 flow [2025-03-17 06:44:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:44:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:44:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-03-17 06:44:03,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2025-03-17 06:44:03,217 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 256 flow. Second operand 3 states and 71 transitions. [2025-03-17 06:44:03,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 458 flow [2025-03-17 06:44:03,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 06:44:03,226 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 272 flow [2025-03-17 06:44:03,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2025-03-17 06:44:03,227 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2025-03-17 06:44:03,227 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 272 flow [2025-03-17 06:44:03,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:44:03,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:03,228 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] [2025-03-17 06:44:03,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:44:03,228 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:03,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:03,229 INFO L85 PathProgramCache]: Analyzing trace with hash -437489233, now seen corresponding path program 3 times [2025-03-17 06:44:03,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541798096] [2025-03-17 06:44:03,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:44:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:03,236 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:03,239 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:03,240 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:44:03,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541798096] [2025-03-17 06:44:03,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541798096] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:03,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:03,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:44:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87241195] [2025-03-17 06:44:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:03,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:44:03,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:03,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:44:03,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:44:03,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2025-03-17 06:44:03,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:44:03,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:03,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2025-03-17 06:44:03,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:03,425 INFO L124 PetriNetUnfolderBase]: 1191/1957 cut-off events. [2025-03-17 06:44:03,426 INFO L125 PetriNetUnfolderBase]: For 1952/1953 co-relation queries the response was YES. [2025-03-17 06:44:03,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5673 conditions, 1957 events. 1191/1957 cut-off events. For 1952/1953 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9268 event pairs, 430 based on Foata normal form. 86/1992 useless extension candidates. Maximal degree in co-relation 5657. Up to 1183 conditions per place. [2025-03-17 06:44:03,435 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 70 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2025-03-17 06:44:03,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 482 flow [2025-03-17 06:44:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:44:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:44:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-17 06:44:03,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-17 06:44:03,437 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 272 flow. Second operand 3 states and 70 transitions. [2025-03-17 06:44:03,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 482 flow [2025-03-17 06:44:03,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 459 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-17 06:44:03,441 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 260 flow [2025-03-17 06:44:03,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2025-03-17 06:44:03,442 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2025-03-17 06:44:03,442 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 260 flow [2025-03-17 06:44:03,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:44:03,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:03,442 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] [2025-03-17 06:44:03,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:44:03,443 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:03,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1717727745, now seen corresponding path program 4 times [2025-03-17 06:44:03,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:03,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913852219] [2025-03-17 06:44:03,443 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:44:03,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:03,451 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:03,485 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:03,486 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:44:03,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913852219] [2025-03-17 06:44:03,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913852219] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:03,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:03,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211860176] [2025-03-17 06:44:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:03,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:03,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:03,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:04,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-03-17 06:44:04,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 260 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:04,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:04,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-03-17 06:44:04,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:04,478 INFO L124 PetriNetUnfolderBase]: 1610/2584 cut-off events. [2025-03-17 06:44:04,478 INFO L125 PetriNetUnfolderBase]: For 1962/1962 co-relation queries the response was YES. [2025-03-17 06:44:04,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7299 conditions, 2584 events. 1610/2584 cut-off events. For 1962/1962 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12945 event pairs, 350 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 7284. Up to 1964 conditions per place. [2025-03-17 06:44:04,492 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 95 selfloop transitions, 28 changer transitions 3/130 dead transitions. [2025-03-17 06:44:04,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 130 transitions, 782 flow [2025-03-17 06:44:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2025-03-17 06:44:04,495 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2025-03-17 06:44:04,495 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 260 flow. Second operand 11 states and 186 transitions. [2025-03-17 06:44:04,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 130 transitions, 782 flow [2025-03-17 06:44:04,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 130 transitions, 763 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-17 06:44:04,499 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 418 flow [2025-03-17 06:44:04,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=418, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2025-03-17 06:44:04,500 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2025-03-17 06:44:04,500 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 418 flow [2025-03-17 06:44:04,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:04,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:04,501 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] [2025-03-17 06:44:04,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:44:04,501 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:04,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1594339611, now seen corresponding path program 5 times [2025-03-17 06:44:04,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:04,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127773891] [2025-03-17 06:44:04,502 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:44:04,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:04,512 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:04,541 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:04,541 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:44:04,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:05,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127773891] [2025-03-17 06:44:05,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127773891] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:05,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:05,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316056716] [2025-03-17 06:44:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:05,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:05,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:05,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:05,073 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:05,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 418 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:05,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:05,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:05,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:05,474 INFO L124 PetriNetUnfolderBase]: 1516/2485 cut-off events. [2025-03-17 06:44:05,474 INFO L125 PetriNetUnfolderBase]: For 3117/3117 co-relation queries the response was YES. [2025-03-17 06:44:05,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7583 conditions, 2485 events. 1516/2485 cut-off events. For 3117/3117 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 12569 event pairs, 391 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 7564. Up to 1821 conditions per place. [2025-03-17 06:44:05,486 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 104 selfloop transitions, 34 changer transitions 3/146 dead transitions. [2025-03-17 06:44:05,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 146 transitions, 1004 flow [2025-03-17 06:44:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2025-03-17 06:44:05,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2025-03-17 06:44:05,487 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 418 flow. Second operand 11 states and 202 transitions. [2025-03-17 06:44:05,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 146 transitions, 1004 flow [2025-03-17 06:44:05,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 146 transitions, 971 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-17 06:44:05,495 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 615 flow [2025-03-17 06:44:05,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=615, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2025-03-17 06:44:05,497 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2025-03-17 06:44:05,497 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 615 flow [2025-03-17 06:44:05,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:05,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:05,498 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] [2025-03-17 06:44:05,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:44:05,498 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:05,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:05,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1902688415, now seen corresponding path program 6 times [2025-03-17 06:44:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:05,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32672362] [2025-03-17 06:44:05,499 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:44:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:05,512 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:05,531 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:05,531 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:44:05,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:05,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:05,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32672362] [2025-03-17 06:44:05,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32672362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:05,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:05,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796240233] [2025-03-17 06:44:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:05,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:05,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:05,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:05,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:06,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:06,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 615 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:06,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:06,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:06,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:06,505 INFO L124 PetriNetUnfolderBase]: 1689/2801 cut-off events. [2025-03-17 06:44:06,506 INFO L125 PetriNetUnfolderBase]: For 6495/6495 co-relation queries the response was YES. [2025-03-17 06:44:06,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9539 conditions, 2801 events. 1689/2801 cut-off events. For 6495/6495 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14996 event pairs, 295 based on Foata normal form. 1/2714 useless extension candidates. Maximal degree in co-relation 9512. Up to 1836 conditions per place. [2025-03-17 06:44:06,525 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 118 selfloop transitions, 45 changer transitions 3/171 dead transitions. [2025-03-17 06:44:06,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 171 transitions, 1292 flow [2025-03-17 06:44:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:44:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:44:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2025-03-17 06:44:06,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2025-03-17 06:44:06,527 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 615 flow. Second operand 12 states and 225 transitions. [2025-03-17 06:44:06,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 171 transitions, 1292 flow [2025-03-17 06:44:06,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 171 transitions, 1260 flow, removed 15 selfloop flow, removed 1 redundant places. [2025-03-17 06:44:06,539 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 772 flow [2025-03-17 06:44:06,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=772, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2025-03-17 06:44:06,540 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2025-03-17 06:44:06,541 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 772 flow [2025-03-17 06:44:06,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:06,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:06,541 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] [2025-03-17 06:44:06,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:44:06,541 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:06,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:06,542 INFO L85 PathProgramCache]: Analyzing trace with hash -686507733, now seen corresponding path program 7 times [2025-03-17 06:44:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:06,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637680514] [2025-03-17 06:44:06,543 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:44:06,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:06,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:44:06,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:06,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:06,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637680514] [2025-03-17 06:44:06,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637680514] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:06,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:06,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489272374] [2025-03-17 06:44:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:06,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:07,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:07,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:07,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:07,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 772 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:07,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:07,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:07,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:07,599 INFO L124 PetriNetUnfolderBase]: 1787/2998 cut-off events. [2025-03-17 06:44:07,599 INFO L125 PetriNetUnfolderBase]: For 9036/9036 co-relation queries the response was YES. [2025-03-17 06:44:07,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 2998 events. 1787/2998 cut-off events. For 9036/9036 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16506 event pairs, 403 based on Foata normal form. 1/2911 useless extension candidates. Maximal degree in co-relation 10764. Up to 2167 conditions per place. [2025-03-17 06:44:07,625 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 125 selfloop transitions, 41 changer transitions 3/174 dead transitions. [2025-03-17 06:44:07,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 174 transitions, 1453 flow [2025-03-17 06:44:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:44:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:44:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2025-03-17 06:44:07,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4384920634920635 [2025-03-17 06:44:07,627 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 772 flow. Second operand 12 states and 221 transitions. [2025-03-17 06:44:07,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 174 transitions, 1453 flow [2025-03-17 06:44:07,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 174 transitions, 1362 flow, removed 23 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:07,646 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 854 flow [2025-03-17 06:44:07,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=854, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2025-03-17 06:44:07,647 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2025-03-17 06:44:07,647 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 854 flow [2025-03-17 06:44:07,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:07,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:07,648 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] [2025-03-17 06:44:07,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 06:44:07,648 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 1 more)] === [2025-03-17 06:44:07,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:07,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1682739373, now seen corresponding path program 8 times [2025-03-17 06:44:07,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:07,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014963475] [2025-03-17 06:44:07,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:44:07,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:07,656 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:07,668 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:07,669 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:44:07,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:08,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:08,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014963475] [2025-03-17 06:44:08,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014963475] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:08,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:08,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:08,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469006680] [2025-03-17 06:44:08,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:08,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:08,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:08,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:08,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:08,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:08,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 854 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:08,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:08,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:08,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:08,682 INFO L124 PetriNetUnfolderBase]: 1787/2996 cut-off events. [2025-03-17 06:44:08,683 INFO L125 PetriNetUnfolderBase]: For 10890/10890 co-relation queries the response was YES. [2025-03-17 06:44:08,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11130 conditions, 2996 events. 1787/2996 cut-off events. For 10890/10890 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16493 event pairs, 423 based on Foata normal form. 1/2909 useless extension candidates. Maximal degree in co-relation 11095. Up to 2251 conditions per place. [2025-03-17 06:44:08,697 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 121 selfloop transitions, 40 changer transitions 3/169 dead transitions. [2025-03-17 06:44:08,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 169 transitions, 1472 flow [2025-03-17 06:44:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:44:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:44:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2025-03-17 06:44:08,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2025-03-17 06:44:08,699 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 854 flow. Second operand 12 states and 212 transitions. [2025-03-17 06:44:08,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 169 transitions, 1472 flow [2025-03-17 06:44:08,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 169 transitions, 1361 flow, removed 32 selfloop flow, removed 7 redundant places. [2025-03-17 06:44:08,713 INFO L231 Difference]: Finished difference. Result has 115 places, 110 transitions, 874 flow [2025-03-17 06:44:08,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=874, PETRI_PLACES=115, PETRI_TRANSITIONS=110} [2025-03-17 06:44:08,715 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2025-03-17 06:44:08,715 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 874 flow [2025-03-17 06:44:08,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:08,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:08,715 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] [2025-03-17 06:44:08,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 06:44:08,715 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 1 more)] === [2025-03-17 06:44:08,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1156807421, now seen corresponding path program 9 times [2025-03-17 06:44:08,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:08,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897701142] [2025-03-17 06:44:08,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:44:08,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:08,724 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:08,733 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:08,733 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:44:08,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:09,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:09,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897701142] [2025-03-17 06:44:09,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897701142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:09,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:09,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:09,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172239899] [2025-03-17 06:44:09,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:09,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:09,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:09,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:09,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:09,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:09,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 110 transitions, 874 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:09,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:09,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:09,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:09,607 INFO L124 PetriNetUnfolderBase]: 1924/3235 cut-off events. [2025-03-17 06:44:09,607 INFO L125 PetriNetUnfolderBase]: For 11848/11848 co-relation queries the response was YES. [2025-03-17 06:44:09,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12029 conditions, 3235 events. 1924/3235 cut-off events. For 11848/11848 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 18228 event pairs, 554 based on Foata normal form. 1/3140 useless extension candidates. Maximal degree in co-relation 11991. Up to 2518 conditions per place. [2025-03-17 06:44:09,623 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 129 selfloop transitions, 36 changer transitions 3/173 dead transitions. [2025-03-17 06:44:09,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 173 transitions, 1573 flow [2025-03-17 06:44:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2025-03-17 06:44:09,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-03-17 06:44:09,625 INFO L175 Difference]: Start difference. First operand has 115 places, 110 transitions, 874 flow. Second operand 11 states and 198 transitions. [2025-03-17 06:44:09,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 173 transitions, 1573 flow [2025-03-17 06:44:09,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 173 transitions, 1479 flow, removed 9 selfloop flow, removed 9 redundant places. [2025-03-17 06:44:09,641 INFO L231 Difference]: Finished difference. Result has 120 places, 119 transitions, 1005 flow [2025-03-17 06:44:09,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1005, PETRI_PLACES=120, PETRI_TRANSITIONS=119} [2025-03-17 06:44:09,641 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2025-03-17 06:44:09,642 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 119 transitions, 1005 flow [2025-03-17 06:44:09,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:09,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:09,642 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] [2025-03-17 06:44:09,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 06:44:09,642 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 1 more)] === [2025-03-17 06:44:09,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2024992013, now seen corresponding path program 10 times [2025-03-17 06:44:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:09,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962899415] [2025-03-17 06:44:09,643 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:44:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:09,648 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:09,661 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:09,662 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:44:09,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:10,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962899415] [2025-03-17 06:44:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962899415] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:10,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:10,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203909168] [2025-03-17 06:44:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:10,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:10,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:10,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:10,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:10,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-03-17 06:44:10,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 119 transitions, 1005 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:10,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:10,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-03-17 06:44:10,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:10,588 INFO L124 PetriNetUnfolderBase]: 2254/3728 cut-off events. [2025-03-17 06:44:10,588 INFO L125 PetriNetUnfolderBase]: For 20738/20738 co-relation queries the response was YES. [2025-03-17 06:44:10,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14752 conditions, 3728 events. 2254/3728 cut-off events. For 20738/20738 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21496 event pairs, 715 based on Foata normal form. 1/3634 useless extension candidates. Maximal degree in co-relation 14710. Up to 2964 conditions per place. [2025-03-17 06:44:10,612 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 142 selfloop transitions, 36 changer transitions 3/185 dead transitions. [2025-03-17 06:44:10,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 185 transitions, 1768 flow [2025-03-17 06:44:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2025-03-17 06:44:10,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4134199134199134 [2025-03-17 06:44:10,614 INFO L175 Difference]: Start difference. First operand has 120 places, 119 transitions, 1005 flow. Second operand 11 states and 191 transitions. [2025-03-17 06:44:10,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 185 transitions, 1768 flow [2025-03-17 06:44:10,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 185 transitions, 1650 flow, removed 42 selfloop flow, removed 5 redundant places. [2025-03-17 06:44:10,647 INFO L231 Difference]: Finished difference. Result has 128 places, 128 transitions, 1097 flow [2025-03-17 06:44:10,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1097, PETRI_PLACES=128, PETRI_TRANSITIONS=128} [2025-03-17 06:44:10,648 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 87 predicate places. [2025-03-17 06:44:10,648 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 128 transitions, 1097 flow [2025-03-17 06:44:10,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:10,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:10,649 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:44:10,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 06:44:10,649 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 1 more)] === [2025-03-17 06:44:10,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash -153920601, now seen corresponding path program 11 times [2025-03-17 06:44:10,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:10,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089116569] [2025-03-17 06:44:10,650 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:44:10,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:10,656 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:10,666 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:10,666 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:44:10,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:11,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089116569] [2025-03-17 06:44:11,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089116569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:11,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:11,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:11,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353503906] [2025-03-17 06:44:11,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:11,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:11,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:11,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:11,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:11,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:11,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 128 transitions, 1097 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:11,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:11,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:11,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:11,559 INFO L124 PetriNetUnfolderBase]: 2222/3736 cut-off events. [2025-03-17 06:44:11,559 INFO L125 PetriNetUnfolderBase]: For 25642/25642 co-relation queries the response was YES. [2025-03-17 06:44:11,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15577 conditions, 3736 events. 2222/3736 cut-off events. For 25642/25642 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22015 event pairs, 679 based on Foata normal form. 1/3633 useless extension candidates. Maximal degree in co-relation 15531. Up to 2931 conditions per place. [2025-03-17 06:44:11,577 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 148 selfloop transitions, 37 changer transitions 3/193 dead transitions. [2025-03-17 06:44:11,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 193 transitions, 1905 flow [2025-03-17 06:44:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2025-03-17 06:44:11,578 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-03-17 06:44:11,578 INFO L175 Difference]: Start difference. First operand has 128 places, 128 transitions, 1097 flow. Second operand 11 states and 203 transitions. [2025-03-17 06:44:11,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 193 transitions, 1905 flow [2025-03-17 06:44:11,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 193 transitions, 1779 flow, removed 46 selfloop flow, removed 5 redundant places. [2025-03-17 06:44:11,610 INFO L231 Difference]: Finished difference. Result has 136 places, 135 transitions, 1197 flow [2025-03-17 06:44:11,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1197, PETRI_PLACES=136, PETRI_TRANSITIONS=135} [2025-03-17 06:44:11,611 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2025-03-17 06:44:11,611 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 135 transitions, 1197 flow [2025-03-17 06:44:11,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:11,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:11,611 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] [2025-03-17 06:44:11,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 06:44:11,611 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 1 more)] === [2025-03-17 06:44:11,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash -83283025, now seen corresponding path program 12 times [2025-03-17 06:44:11,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:11,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139847869] [2025-03-17 06:44:11,612 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:44:11,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:11,619 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:11,626 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:11,627 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:44:11,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:11,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:11,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139847869] [2025-03-17 06:44:11,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139847869] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:11,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:11,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573769750] [2025-03-17 06:44:11,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:11,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:11,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:11,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:11,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:11,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 135 transitions, 1197 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:11,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:11,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:11,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:12,473 INFO L124 PetriNetUnfolderBase]: 2283/3844 cut-off events. [2025-03-17 06:44:12,473 INFO L125 PetriNetUnfolderBase]: For 29917/29917 co-relation queries the response was YES. [2025-03-17 06:44:12,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16381 conditions, 3844 events. 2283/3844 cut-off events. For 29917/29917 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 22891 event pairs, 769 based on Foata normal form. 1/3743 useless extension candidates. Maximal degree in co-relation 16331. Up to 3170 conditions per place. [2025-03-17 06:44:12,503 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 142 selfloop transitions, 36 changer transitions 4/187 dead transitions. [2025-03-17 06:44:12,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 187 transitions, 1855 flow [2025-03-17 06:44:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2025-03-17 06:44:12,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2025-03-17 06:44:12,505 INFO L175 Difference]: Start difference. First operand has 136 places, 135 transitions, 1197 flow. Second operand 11 states and 190 transitions. [2025-03-17 06:44:12,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 187 transitions, 1855 flow [2025-03-17 06:44:12,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 187 transitions, 1723 flow, removed 47 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:12,544 INFO L231 Difference]: Finished difference. Result has 143 places, 141 transitions, 1232 flow [2025-03-17 06:44:12,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1232, PETRI_PLACES=143, PETRI_TRANSITIONS=141} [2025-03-17 06:44:12,545 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2025-03-17 06:44:12,545 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 141 transitions, 1232 flow [2025-03-17 06:44:12,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:12,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:12,546 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] [2025-03-17 06:44:12,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 06:44:12,546 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 1 more)] === [2025-03-17 06:44:12,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash -799005143, now seen corresponding path program 13 times [2025-03-17 06:44:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:12,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37801502] [2025-03-17 06:44:12,547 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:44:12,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:12,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:44:12,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:12,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:12,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:12,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:12,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37801502] [2025-03-17 06:44:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37801502] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:12,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:12,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:12,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568575569] [2025-03-17 06:44:12,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:12,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:12,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:12,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:13,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:13,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 141 transitions, 1232 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:13,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:13,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:13,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:13,568 INFO L124 PetriNetUnfolderBase]: 2434/4088 cut-off events. [2025-03-17 06:44:13,568 INFO L125 PetriNetUnfolderBase]: For 31477/31477 co-relation queries the response was YES. [2025-03-17 06:44:13,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17437 conditions, 4088 events. 2434/4088 cut-off events. For 31477/31477 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 24707 event pairs, 795 based on Foata normal form. 1/3991 useless extension candidates. Maximal degree in co-relation 17383. Up to 3194 conditions per place. [2025-03-17 06:44:13,593 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 153 selfloop transitions, 42 changer transitions 3/203 dead transitions. [2025-03-17 06:44:13,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 203 transitions, 2070 flow [2025-03-17 06:44:13,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2025-03-17 06:44:13,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2025-03-17 06:44:13,595 INFO L175 Difference]: Start difference. First operand has 143 places, 141 transitions, 1232 flow. Second operand 11 states and 201 transitions. [2025-03-17 06:44:13,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 203 transitions, 2070 flow [2025-03-17 06:44:13,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 203 transitions, 1962 flow, removed 34 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:13,642 INFO L231 Difference]: Finished difference. Result has 150 places, 148 transitions, 1393 flow [2025-03-17 06:44:13,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1393, PETRI_PLACES=150, PETRI_TRANSITIONS=148} [2025-03-17 06:44:13,642 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2025-03-17 06:44:13,642 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 148 transitions, 1393 flow [2025-03-17 06:44:13,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:13,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:13,643 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] [2025-03-17 06:44:13,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 06:44:13,643 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 1 more)] === [2025-03-17 06:44:13,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1522543235, now seen corresponding path program 14 times [2025-03-17 06:44:13,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:13,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084598018] [2025-03-17 06:44:13,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:44:13,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:13,648 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:13,657 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:13,657 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:44:13,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:13,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:13,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084598018] [2025-03-17 06:44:13,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084598018] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:13,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:13,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:13,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629407606] [2025-03-17 06:44:13,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:13,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:13,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:13,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:13,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:13,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:13,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 148 transitions, 1393 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:13,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:13,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:13,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:14,427 INFO L124 PetriNetUnfolderBase]: 2434/4086 cut-off events. [2025-03-17 06:44:14,427 INFO L125 PetriNetUnfolderBase]: For 37352/37352 co-relation queries the response was YES. [2025-03-17 06:44:14,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18073 conditions, 4086 events. 2434/4086 cut-off events. For 37352/37352 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 24626 event pairs, 835 based on Foata normal form. 1/3989 useless extension candidates. Maximal degree in co-relation 18015. Up to 3352 conditions per place. [2025-03-17 06:44:14,457 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 158 selfloop transitions, 37 changer transitions 4/204 dead transitions. [2025-03-17 06:44:14,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 204 transitions, 2118 flow [2025-03-17 06:44:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:14,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2025-03-17 06:44:14,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4264069264069264 [2025-03-17 06:44:14,458 INFO L175 Difference]: Start difference. First operand has 150 places, 148 transitions, 1393 flow. Second operand 11 states and 197 transitions. [2025-03-17 06:44:14,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 204 transitions, 2118 flow [2025-03-17 06:44:14,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 204 transitions, 1960 flow, removed 59 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:14,500 INFO L231 Difference]: Finished difference. Result has 156 places, 152 transitions, 1362 flow [2025-03-17 06:44:14,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1362, PETRI_PLACES=156, PETRI_TRANSITIONS=152} [2025-03-17 06:44:14,500 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2025-03-17 06:44:14,500 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 152 transitions, 1362 flow [2025-03-17 06:44:14,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:14,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:14,501 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] [2025-03-17 06:44:14,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 06:44:14,501 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:14,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:14,501 INFO L85 PathProgramCache]: Analyzing trace with hash -324332375, now seen corresponding path program 15 times [2025-03-17 06:44:14,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:14,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046796467] [2025-03-17 06:44:14,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:44:14,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:14,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:14,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:14,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:44:14,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:14,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:14,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046796467] [2025-03-17 06:44:14,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046796467] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:14,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:14,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:14,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130025442] [2025-03-17 06:44:14,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:14,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:14,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:14,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:14,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:14,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:14,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 152 transitions, 1362 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:14,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:14,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:14,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:15,371 INFO L124 PetriNetUnfolderBase]: 2434/4084 cut-off events. [2025-03-17 06:44:15,372 INFO L125 PetriNetUnfolderBase]: For 32987/32987 co-relation queries the response was YES. [2025-03-17 06:44:15,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17600 conditions, 4084 events. 2434/4084 cut-off events. For 32987/32987 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 24589 event pairs, 831 based on Foata normal form. 1/3987 useless extension candidates. Maximal degree in co-relation 17539. Up to 3348 conditions per place. [2025-03-17 06:44:15,398 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 156 selfloop transitions, 41 changer transitions 4/206 dead transitions. [2025-03-17 06:44:15,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 206 transitions, 2055 flow [2025-03-17 06:44:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:15,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:15,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2025-03-17 06:44:15,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2025-03-17 06:44:15,399 INFO L175 Difference]: Start difference. First operand has 156 places, 152 transitions, 1362 flow. Second operand 11 states and 196 transitions. [2025-03-17 06:44:15,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 206 transitions, 2055 flow [2025-03-17 06:44:15,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 206 transitions, 1949 flow, removed 18 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:15,431 INFO L231 Difference]: Finished difference. Result has 160 places, 156 transitions, 1402 flow [2025-03-17 06:44:15,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1402, PETRI_PLACES=160, PETRI_TRANSITIONS=156} [2025-03-17 06:44:15,432 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2025-03-17 06:44:15,432 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 1402 flow [2025-03-17 06:44:15,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:15,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:15,433 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] [2025-03-17 06:44:15,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 06:44:15,433 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:15,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1888228925, now seen corresponding path program 16 times [2025-03-17 06:44:15,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:15,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500310760] [2025-03-17 06:44:15,433 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:44:15,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:15,439 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:15,458 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:15,458 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:44:15,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:15,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:15,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500310760] [2025-03-17 06:44:15,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500310760] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:15,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:15,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:15,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291789556] [2025-03-17 06:44:15,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:15,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:15,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:15,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:15,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:15,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-03-17 06:44:15,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 156 transitions, 1402 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:15,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:15,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-03-17 06:44:15,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:16,287 INFO L124 PetriNetUnfolderBase]: 2668/4423 cut-off events. [2025-03-17 06:44:16,287 INFO L125 PetriNetUnfolderBase]: For 35776/35776 co-relation queries the response was YES. [2025-03-17 06:44:16,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18872 conditions, 4423 events. 2668/4423 cut-off events. For 35776/35776 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 26604 event pairs, 985 based on Foata normal form. 1/4321 useless extension candidates. Maximal degree in co-relation 18809. Up to 3724 conditions per place. [2025-03-17 06:44:16,358 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 162 selfloop transitions, 37 changer transitions 3/206 dead transitions. [2025-03-17 06:44:16,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 206 transitions, 2072 flow [2025-03-17 06:44:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2025-03-17 06:44:16,359 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3917748917748918 [2025-03-17 06:44:16,359 INFO L175 Difference]: Start difference. First operand has 160 places, 156 transitions, 1402 flow. Second operand 11 states and 181 transitions. [2025-03-17 06:44:16,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 206 transitions, 2072 flow [2025-03-17 06:44:16,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 206 transitions, 1948 flow, removed 23 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:16,415 INFO L231 Difference]: Finished difference. Result has 164 places, 159 transitions, 1404 flow [2025-03-17 06:44:16,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1404, PETRI_PLACES=164, PETRI_TRANSITIONS=159} [2025-03-17 06:44:16,416 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2025-03-17 06:44:16,416 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 159 transitions, 1404 flow [2025-03-17 06:44:16,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:16,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:16,416 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] [2025-03-17 06:44:16,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 06:44:16,416 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:16,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1203203691, now seen corresponding path program 17 times [2025-03-17 06:44:16,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:16,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233022410] [2025-03-17 06:44:16,417 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:44:16,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:16,422 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:16,432 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:16,432 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:44:16,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:16,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:16,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233022410] [2025-03-17 06:44:16,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233022410] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:16,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:16,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:16,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871295367] [2025-03-17 06:44:16,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:16,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:16,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:16,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:16,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:16,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:16,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 159 transitions, 1404 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:16,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:16,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:16,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:17,276 INFO L124 PetriNetUnfolderBase]: 2470/4159 cut-off events. [2025-03-17 06:44:17,277 INFO L125 PetriNetUnfolderBase]: For 32368/32368 co-relation queries the response was YES. [2025-03-17 06:44:17,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17644 conditions, 4159 events. 2470/4159 cut-off events. For 32368/32368 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 25330 event pairs, 900 based on Foata normal form. 1/4058 useless extension candidates. Maximal degree in co-relation 17579. Up to 3495 conditions per place. [2025-03-17 06:44:17,304 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 162 selfloop transitions, 35 changer transitions 3/205 dead transitions. [2025-03-17 06:44:17,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 205 transitions, 2040 flow [2025-03-17 06:44:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2025-03-17 06:44:17,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2025-03-17 06:44:17,305 INFO L175 Difference]: Start difference. First operand has 164 places, 159 transitions, 1404 flow. Second operand 11 states and 187 transitions. [2025-03-17 06:44:17,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 205 transitions, 2040 flow [2025-03-17 06:44:17,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 205 transitions, 1932 flow, removed 18 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:17,342 INFO L231 Difference]: Finished difference. Result has 168 places, 161 transitions, 1392 flow [2025-03-17 06:44:17,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1392, PETRI_PLACES=168, PETRI_TRANSITIONS=161} [2025-03-17 06:44:17,342 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2025-03-17 06:44:17,342 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 161 transitions, 1392 flow [2025-03-17 06:44:17,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:17,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:17,342 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] [2025-03-17 06:44:17,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 06:44:17,342 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:17,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:17,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1557372551, now seen corresponding path program 18 times [2025-03-17 06:44:17,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:17,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628802387] [2025-03-17 06:44:17,343 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:44:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:17,348 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:17,357 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:17,357 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:44:17,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:17,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:17,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628802387] [2025-03-17 06:44:17,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628802387] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:17,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:17,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:17,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121265046] [2025-03-17 06:44:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:17,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:17,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:17,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:17,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:17,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 161 transitions, 1392 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:17,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:17,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:17,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:18,418 INFO L124 PetriNetUnfolderBase]: 2709/4568 cut-off events. [2025-03-17 06:44:18,418 INFO L125 PetriNetUnfolderBase]: For 42353/42353 co-relation queries the response was YES. [2025-03-17 06:44:18,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20178 conditions, 4568 events. 2709/4568 cut-off events. For 42353/42353 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 28665 event pairs, 928 based on Foata normal form. 1/4464 useless extension candidates. Maximal degree in co-relation 20111. Up to 3530 conditions per place. [2025-03-17 06:44:18,453 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 189 selfloop transitions, 44 changer transitions 3/241 dead transitions. [2025-03-17 06:44:18,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 241 transitions, 2489 flow [2025-03-17 06:44:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:44:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:44:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2025-03-17 06:44:18,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44246031746031744 [2025-03-17 06:44:18,455 INFO L175 Difference]: Start difference. First operand has 168 places, 161 transitions, 1392 flow. Second operand 12 states and 223 transitions. [2025-03-17 06:44:18,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 241 transitions, 2489 flow [2025-03-17 06:44:18,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 241 transitions, 2421 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:18,558 INFO L231 Difference]: Finished difference. Result has 175 places, 173 transitions, 1663 flow [2025-03-17 06:44:18,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1663, PETRI_PLACES=175, PETRI_TRANSITIONS=173} [2025-03-17 06:44:18,559 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2025-03-17 06:44:18,559 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 173 transitions, 1663 flow [2025-03-17 06:44:18,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:18,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:18,559 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] [2025-03-17 06:44:18,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 06:44:18,559 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:18,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash -316636653, now seen corresponding path program 19 times [2025-03-17 06:44:18,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:18,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779787982] [2025-03-17 06:44:18,560 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:44:18,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:18,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:44:18,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:18,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:18,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:18,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:18,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779787982] [2025-03-17 06:44:18,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779787982] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:18,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:18,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:18,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085524155] [2025-03-17 06:44:18,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:18,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:18,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:18,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:18,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:18,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 173 transitions, 1663 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:18,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:18,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:18,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:19,519 INFO L124 PetriNetUnfolderBase]: 2908/4911 cut-off events. [2025-03-17 06:44:19,520 INFO L125 PetriNetUnfolderBase]: For 58161/58161 co-relation queries the response was YES. [2025-03-17 06:44:19,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23123 conditions, 4911 events. 2908/4911 cut-off events. For 58161/58161 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 31388 event pairs, 939 based on Foata normal form. 1/4802 useless extension candidates. Maximal degree in co-relation 23052. Up to 3717 conditions per place. [2025-03-17 06:44:19,553 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 187 selfloop transitions, 54 changer transitions 3/249 dead transitions. [2025-03-17 06:44:19,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 249 transitions, 2832 flow [2025-03-17 06:44:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:44:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:44:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2025-03-17 06:44:19,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2025-03-17 06:44:19,555 INFO L175 Difference]: Start difference. First operand has 175 places, 173 transitions, 1663 flow. Second operand 12 states and 222 transitions. [2025-03-17 06:44:19,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 249 transitions, 2832 flow [2025-03-17 06:44:19,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 249 transitions, 2606 flow, removed 96 selfloop flow, removed 5 redundant places. [2025-03-17 06:44:19,634 INFO L231 Difference]: Finished difference. Result has 185 places, 184 transitions, 1842 flow [2025-03-17 06:44:19,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1842, PETRI_PLACES=185, PETRI_TRANSITIONS=184} [2025-03-17 06:44:19,635 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2025-03-17 06:44:19,635 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 184 transitions, 1842 flow [2025-03-17 06:44:19,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:19,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:19,635 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] [2025-03-17 06:44:19,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 06:44:19,635 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:19,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash -397873647, now seen corresponding path program 20 times [2025-03-17 06:44:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:19,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837576481] [2025-03-17 06:44:19,635 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:44:19,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:19,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:19,646 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:19,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:44:19,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:19,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:19,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837576481] [2025-03-17 06:44:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837576481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:19,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:19,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426775414] [2025-03-17 06:44:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:19,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:19,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:19,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:19,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:20,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:20,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 184 transitions, 1842 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:20,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:20,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:20,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:20,621 INFO L124 PetriNetUnfolderBase]: 3004/5079 cut-off events. [2025-03-17 06:44:20,621 INFO L125 PetriNetUnfolderBase]: For 69676/69676 co-relation queries the response was YES. [2025-03-17 06:44:20,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24631 conditions, 5079 events. 3004/5079 cut-off events. For 69676/69676 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 32797 event pairs, 1057 based on Foata normal form. 1/4968 useless extension candidates. Maximal degree in co-relation 24555. Up to 3989 conditions per place. [2025-03-17 06:44:20,665 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 196 selfloop transitions, 49 changer transitions 3/253 dead transitions. [2025-03-17 06:44:20,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 253 transitions, 2900 flow [2025-03-17 06:44:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:44:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:44:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2025-03-17 06:44:20,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2025-03-17 06:44:20,666 INFO L175 Difference]: Start difference. First operand has 185 places, 184 transitions, 1842 flow. Second operand 12 states and 219 transitions. [2025-03-17 06:44:20,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 253 transitions, 2900 flow [2025-03-17 06:44:20,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 253 transitions, 2693 flow, removed 79 selfloop flow, removed 7 redundant places. [2025-03-17 06:44:20,797 INFO L231 Difference]: Finished difference. Result has 192 places, 190 transitions, 1901 flow [2025-03-17 06:44:20,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1901, PETRI_PLACES=192, PETRI_TRANSITIONS=190} [2025-03-17 06:44:20,797 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2025-03-17 06:44:20,797 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 190 transitions, 1901 flow [2025-03-17 06:44:20,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:20,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:20,798 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] [2025-03-17 06:44:20,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 06:44:20,798 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:20,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:20,798 INFO L85 PathProgramCache]: Analyzing trace with hash 275721419, now seen corresponding path program 21 times [2025-03-17 06:44:20,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:20,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746354463] [2025-03-17 06:44:20,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:44:20,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:20,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:20,816 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:20,816 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:44:20,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:21,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:21,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746354463] [2025-03-17 06:44:21,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746354463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:21,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:21,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:21,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034120401] [2025-03-17 06:44:21,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:21,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:21,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:21,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:21,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:21,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:21,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 190 transitions, 1901 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:21,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:21,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:21,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:21,803 INFO L124 PetriNetUnfolderBase]: 3004/5087 cut-off events. [2025-03-17 06:44:21,803 INFO L125 PetriNetUnfolderBase]: For 68879/68879 co-relation queries the response was YES. [2025-03-17 06:44:21,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24498 conditions, 5087 events. 3004/5087 cut-off events. For 68879/68879 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 32881 event pairs, 1066 based on Foata normal form. 1/4976 useless extension candidates. Maximal degree in co-relation 24419. Up to 4066 conditions per place. [2025-03-17 06:44:21,845 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 193 selfloop transitions, 51 changer transitions 4/253 dead transitions. [2025-03-17 06:44:21,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 253 transitions, 2837 flow [2025-03-17 06:44:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:44:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:44:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2025-03-17 06:44:21,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-03-17 06:44:21,846 INFO L175 Difference]: Start difference. First operand has 192 places, 190 transitions, 1901 flow. Second operand 12 states and 216 transitions. [2025-03-17 06:44:21,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 253 transitions, 2837 flow [2025-03-17 06:44:21,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 253 transitions, 2684 flow, removed 51 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:21,971 INFO L231 Difference]: Finished difference. Result has 197 places, 194 transitions, 1928 flow [2025-03-17 06:44:21,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1928, PETRI_PLACES=197, PETRI_TRANSITIONS=194} [2025-03-17 06:44:21,971 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2025-03-17 06:44:21,971 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 194 transitions, 1928 flow [2025-03-17 06:44:21,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:21,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:21,971 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] [2025-03-17 06:44:21,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-17 06:44:21,971 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:21,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:21,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1914303547, now seen corresponding path program 22 times [2025-03-17 06:44:21,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:21,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954328612] [2025-03-17 06:44:21,972 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:44:21,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:21,977 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:21,988 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:21,988 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:44:21,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:22,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:22,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954328612] [2025-03-17 06:44:22,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954328612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:22,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:22,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:22,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353994421] [2025-03-17 06:44:22,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:22,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:22,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:22,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:22,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:22,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-03-17 06:44:22,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 194 transitions, 1928 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:22,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:22,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-03-17 06:44:22,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:23,092 INFO L124 PetriNetUnfolderBase]: 3330/5587 cut-off events. [2025-03-17 06:44:23,092 INFO L125 PetriNetUnfolderBase]: For 77752/77760 co-relation queries the response was YES. [2025-03-17 06:44:23,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27224 conditions, 5587 events. 3330/5587 cut-off events. For 77752/77760 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 36574 event pairs, 1353 based on Foata normal form. 3/5465 useless extension candidates. Maximal degree in co-relation 27143. Up to 4717 conditions per place. [2025-03-17 06:44:23,146 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 216 selfloop transitions, 36 changer transitions 3/259 dead transitions. [2025-03-17 06:44:23,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 259 transitions, 3147 flow [2025-03-17 06:44:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2025-03-17 06:44:23,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41774891774891776 [2025-03-17 06:44:23,147 INFO L175 Difference]: Start difference. First operand has 197 places, 194 transitions, 1928 flow. Second operand 11 states and 193 transitions. [2025-03-17 06:44:23,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 259 transitions, 3147 flow [2025-03-17 06:44:23,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 259 transitions, 2993 flow, removed 30 selfloop flow, removed 9 redundant places. [2025-03-17 06:44:23,259 INFO L231 Difference]: Finished difference. Result has 202 places, 203 transitions, 2157 flow [2025-03-17 06:44:23,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2157, PETRI_PLACES=202, PETRI_TRANSITIONS=203} [2025-03-17 06:44:23,260 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2025-03-17 06:44:23,260 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 203 transitions, 2157 flow [2025-03-17 06:44:23,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:23,260 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:23,260 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] [2025-03-17 06:44:23,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-17 06:44:23,260 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:23,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:23,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1073894965, now seen corresponding path program 23 times [2025-03-17 06:44:23,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:23,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505542079] [2025-03-17 06:44:23,261 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:44:23,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:23,266 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:23,272 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:23,272 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:44:23,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:23,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:23,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505542079] [2025-03-17 06:44:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505542079] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:23,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:23,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456271921] [2025-03-17 06:44:23,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:23,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:23,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:23,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:23,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:23,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:23,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 203 transitions, 2157 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:23,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:23,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:23,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:24,341 INFO L124 PetriNetUnfolderBase]: 3334/5650 cut-off events. [2025-03-17 06:44:24,341 INFO L125 PetriNetUnfolderBase]: For 103249/103257 co-relation queries the response was YES. [2025-03-17 06:44:24,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29242 conditions, 5650 events. 3334/5650 cut-off events. For 103249/103257 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 37738 event pairs, 1312 based on Foata normal form. 3/5518 useless extension candidates. Maximal degree in co-relation 29157. Up to 4717 conditions per place. [2025-03-17 06:44:24,377 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 226 selfloop transitions, 37 changer transitions 3/271 dead transitions. [2025-03-17 06:44:24,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 271 transitions, 3434 flow [2025-03-17 06:44:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:24,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2025-03-17 06:44:24,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2025-03-17 06:44:24,379 INFO L175 Difference]: Start difference. First operand has 202 places, 203 transitions, 2157 flow. Second operand 11 states and 206 transitions. [2025-03-17 06:44:24,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 271 transitions, 3434 flow [2025-03-17 06:44:24,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 271 transitions, 3140 flow, removed 130 selfloop flow, removed 5 redundant places. [2025-03-17 06:44:24,512 INFO L231 Difference]: Finished difference. Result has 211 places, 213 transitions, 2256 flow [2025-03-17 06:44:24,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2256, PETRI_PLACES=211, PETRI_TRANSITIONS=213} [2025-03-17 06:44:24,513 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2025-03-17 06:44:24,513 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 213 transitions, 2256 flow [2025-03-17 06:44:24,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:24,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:24,513 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] [2025-03-17 06:44:24,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 06:44:24,513 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:24,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:24,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1307139353, now seen corresponding path program 24 times [2025-03-17 06:44:24,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:24,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730549855] [2025-03-17 06:44:24,514 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:44:24,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:24,519 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:24,525 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:24,525 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:44:24,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:24,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730549855] [2025-03-17 06:44:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730549855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:24,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:24,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:24,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439319069] [2025-03-17 06:44:24,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:24,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:24,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:24,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:24,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:24,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:24,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 213 transitions, 2256 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:24,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:24,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:24,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:25,627 INFO L124 PetriNetUnfolderBase]: 3395/5754 cut-off events. [2025-03-17 06:44:25,627 INFO L125 PetriNetUnfolderBase]: For 96203/96203 co-relation queries the response was YES. [2025-03-17 06:44:25,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29267 conditions, 5754 events. 3395/5754 cut-off events. For 96203/96203 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 38463 event pairs, 1434 based on Foata normal form. 1/5624 useless extension candidates. Maximal degree in co-relation 29177. Up to 4956 conditions per place. [2025-03-17 06:44:25,672 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 220 selfloop transitions, 36 changer transitions 4/265 dead transitions. [2025-03-17 06:44:25,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 265 transitions, 3220 flow [2025-03-17 06:44:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2025-03-17 06:44:25,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41774891774891776 [2025-03-17 06:44:25,673 INFO L175 Difference]: Start difference. First operand has 211 places, 213 transitions, 2256 flow. Second operand 11 states and 193 transitions. [2025-03-17 06:44:25,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 265 transitions, 3220 flow [2025-03-17 06:44:25,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 265 transitions, 3010 flow, removed 88 selfloop flow, removed 5 redundant places. [2025-03-17 06:44:25,815 INFO L231 Difference]: Finished difference. Result has 219 places, 219 transitions, 2257 flow [2025-03-17 06:44:25,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2257, PETRI_PLACES=219, PETRI_TRANSITIONS=219} [2025-03-17 06:44:25,816 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 178 predicate places. [2025-03-17 06:44:25,816 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 219 transitions, 2257 flow [2025-03-17 06:44:25,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:25,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:25,816 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] [2025-03-17 06:44:25,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-17 06:44:25,816 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:25,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2022861471, now seen corresponding path program 25 times [2025-03-17 06:44:25,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:25,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192827654] [2025-03-17 06:44:25,817 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:44:25,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:25,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:44:25,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:25,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:25,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:26,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:26,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192827654] [2025-03-17 06:44:26,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192827654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:26,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:26,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215581793] [2025-03-17 06:44:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:26,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:26,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:26,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:26,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:26,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 219 transitions, 2257 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:26,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:26,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:26,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:26,885 INFO L124 PetriNetUnfolderBase]: 3540/5996 cut-off events. [2025-03-17 06:44:26,885 INFO L125 PetriNetUnfolderBase]: For 98721/98721 co-relation queries the response was YES. [2025-03-17 06:44:26,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30287 conditions, 5996 events. 3540/5996 cut-off events. For 98721/98721 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 40476 event pairs, 1442 based on Foata normal form. 1/5868 useless extension candidates. Maximal degree in co-relation 30193. Up to 4980 conditions per place. [2025-03-17 06:44:26,946 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 231 selfloop transitions, 42 changer transitions 3/281 dead transitions. [2025-03-17 06:44:26,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 281 transitions, 3483 flow [2025-03-17 06:44:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2025-03-17 06:44:26,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2025-03-17 06:44:26,947 INFO L175 Difference]: Start difference. First operand has 219 places, 219 transitions, 2257 flow. Second operand 11 states and 204 transitions. [2025-03-17 06:44:26,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 281 transitions, 3483 flow [2025-03-17 06:44:27,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 281 transitions, 3321 flow, removed 61 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:27,069 INFO L231 Difference]: Finished difference. Result has 226 places, 226 transitions, 2454 flow [2025-03-17 06:44:27,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2454, PETRI_PLACES=226, PETRI_TRANSITIONS=226} [2025-03-17 06:44:27,070 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2025-03-17 06:44:27,070 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 226 transitions, 2454 flow [2025-03-17 06:44:27,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:27,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:27,070 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] [2025-03-17 06:44:27,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-17 06:44:27,070 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:27,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2118858953, now seen corresponding path program 26 times [2025-03-17 06:44:27,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:27,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267213741] [2025-03-17 06:44:27,071 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:44:27,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:27,077 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:27,082 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:27,082 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:44:27,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:27,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:27,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267213741] [2025-03-17 06:44:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267213741] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:27,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:27,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575479282] [2025-03-17 06:44:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:27,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:27,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:27,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:27,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:27,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:27,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 226 transitions, 2454 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:27,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:27,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:27,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:28,264 INFO L124 PetriNetUnfolderBase]: 3646/6198 cut-off events. [2025-03-17 06:44:28,264 INFO L125 PetriNetUnfolderBase]: For 126150/126150 co-relation queries the response was YES. [2025-03-17 06:44:28,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32726 conditions, 6198 events. 3646/6198 cut-off events. For 126150/126150 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 42272 event pairs, 1525 based on Foata normal form. 1/6060 useless extension candidates. Maximal degree in co-relation 32628. Up to 5291 conditions per place. [2025-03-17 06:44:28,403 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 246 selfloop transitions, 35 changer transitions 3/289 dead transitions. [2025-03-17 06:44:28,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 289 transitions, 3674 flow [2025-03-17 06:44:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2025-03-17 06:44:28,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-03-17 06:44:28,405 INFO L175 Difference]: Start difference. First operand has 226 places, 226 transitions, 2454 flow. Second operand 11 states and 203 transitions. [2025-03-17 06:44:28,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 289 transitions, 3674 flow [2025-03-17 06:44:28,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 289 transitions, 3430 flow, removed 102 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:28,650 INFO L231 Difference]: Finished difference. Result has 233 places, 232 transitions, 2473 flow [2025-03-17 06:44:28,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2473, PETRI_PLACES=233, PETRI_TRANSITIONS=232} [2025-03-17 06:44:28,651 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2025-03-17 06:44:28,651 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 232 transitions, 2473 flow [2025-03-17 06:44:28,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:28,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:28,651 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] [2025-03-17 06:44:28,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-17 06:44:28,651 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:28,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1279134955, now seen corresponding path program 27 times [2025-03-17 06:44:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835497992] [2025-03-17 06:44:28,652 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:44:28,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:28,658 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:28,663 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:28,663 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:44:28,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:29,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:29,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835497992] [2025-03-17 06:44:29,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835497992] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:29,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:29,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:29,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190135041] [2025-03-17 06:44:29,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:29,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:29,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:29,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:29,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:29,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:29,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 232 transitions, 2473 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:29,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:29,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:29,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:30,017 INFO L124 PetriNetUnfolderBase]: 3708/6296 cut-off events. [2025-03-17 06:44:30,018 INFO L125 PetriNetUnfolderBase]: For 127151/127151 co-relation queries the response was YES. [2025-03-17 06:44:30,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32813 conditions, 6296 events. 3708/6296 cut-off events. For 127151/127151 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 43033 event pairs, 1557 based on Foata normal form. 1/6161 useless extension candidates. Maximal degree in co-relation 32711. Up to 5378 conditions per place. [2025-03-17 06:44:30,081 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 245 selfloop transitions, 37 changer transitions 4/291 dead transitions. [2025-03-17 06:44:30,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 291 transitions, 3635 flow [2025-03-17 06:44:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2025-03-17 06:44:30,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2025-03-17 06:44:30,082 INFO L175 Difference]: Start difference. First operand has 233 places, 232 transitions, 2473 flow. Second operand 11 states and 202 transitions. [2025-03-17 06:44:30,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 291 transitions, 3635 flow [2025-03-17 06:44:30,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 291 transitions, 3452 flow, removed 73 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:30,347 INFO L231 Difference]: Finished difference. Result has 239 places, 236 transitions, 2542 flow [2025-03-17 06:44:30,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2542, PETRI_PLACES=239, PETRI_TRANSITIONS=236} [2025-03-17 06:44:30,347 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2025-03-17 06:44:30,347 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 236 transitions, 2542 flow [2025-03-17 06:44:30,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:30,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:30,347 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] [2025-03-17 06:44:30,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-17 06:44:30,348 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:30,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:30,348 INFO L85 PathProgramCache]: Analyzing trace with hash 801135685, now seen corresponding path program 28 times [2025-03-17 06:44:30,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:30,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257572645] [2025-03-17 06:44:30,348 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:44:30,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:30,355 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:30,368 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:30,368 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:44:30,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:30,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:30,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257572645] [2025-03-17 06:44:30,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257572645] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:30,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:30,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:30,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794137554] [2025-03-17 06:44:30,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:30,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:30,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:30,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:30,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-03-17 06:44:30,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 236 transitions, 2542 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:30,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:30,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-03-17 06:44:30,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:31,682 INFO L124 PetriNetUnfolderBase]: 4002/6745 cut-off events. [2025-03-17 06:44:31,682 INFO L125 PetriNetUnfolderBase]: For 149088/149088 co-relation queries the response was YES. [2025-03-17 06:44:31,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35678 conditions, 6745 events. 4002/6745 cut-off events. For 149088/149088 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 46213 event pairs, 1730 based on Foata normal form. 1/6600 useless extension candidates. Maximal degree in co-relation 35573. Up to 5787 conditions per place. [2025-03-17 06:44:31,753 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 257 selfloop transitions, 36 changer transitions 3/300 dead transitions. [2025-03-17 06:44:31,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 300 transitions, 3829 flow [2025-03-17 06:44:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2025-03-17 06:44:31,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2025-03-17 06:44:31,754 INFO L175 Difference]: Start difference. First operand has 239 places, 236 transitions, 2542 flow. Second operand 11 states and 195 transitions. [2025-03-17 06:44:31,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 300 transitions, 3829 flow [2025-03-17 06:44:31,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 300 transitions, 3634 flow, removed 77 selfloop flow, removed 7 redundant places. [2025-03-17 06:44:31,951 INFO L231 Difference]: Finished difference. Result has 245 places, 242 transitions, 2628 flow [2025-03-17 06:44:31,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2628, PETRI_PLACES=245, PETRI_TRANSITIONS=242} [2025-03-17 06:44:31,952 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2025-03-17 06:44:31,952 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 242 transitions, 2628 flow [2025-03-17 06:44:31,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:31,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:31,952 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] [2025-03-17 06:44:31,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-17 06:44:31,953 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:31,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:31,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2145525361, now seen corresponding path program 29 times [2025-03-17 06:44:31,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:31,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401056108] [2025-03-17 06:44:31,953 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:44:31,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:31,958 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:31,964 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:31,964 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:44:31,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401056108] [2025-03-17 06:44:32,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401056108] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:32,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:32,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:32,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223881227] [2025-03-17 06:44:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:32,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:32,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:32,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:32,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:32,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:32,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 242 transitions, 2628 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:32,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:32,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:32,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:33,110 INFO L124 PetriNetUnfolderBase]: 3804/6476 cut-off events. [2025-03-17 06:44:33,110 INFO L125 PetriNetUnfolderBase]: For 141357/141357 co-relation queries the response was YES. [2025-03-17 06:44:33,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34103 conditions, 6476 events. 3804/6476 cut-off events. For 141357/141357 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 44701 event pairs, 1641 based on Foata normal form. 1/6337 useless extension candidates. Maximal degree in co-relation 33994. Up to 5583 conditions per place. [2025-03-17 06:44:33,175 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 252 selfloop transitions, 37 changer transitions 4/298 dead transitions. [2025-03-17 06:44:33,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 298 transitions, 3721 flow [2025-03-17 06:44:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2025-03-17 06:44:33,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2025-03-17 06:44:33,176 INFO L175 Difference]: Start difference. First operand has 245 places, 242 transitions, 2628 flow. Second operand 11 states and 200 transitions. [2025-03-17 06:44:33,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 298 transitions, 3721 flow [2025-03-17 06:44:33,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 298 transitions, 3521 flow, removed 81 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:33,397 INFO L231 Difference]: Finished difference. Result has 251 places, 246 transitions, 2577 flow [2025-03-17 06:44:33,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2577, PETRI_PLACES=251, PETRI_TRANSITIONS=246} [2025-03-17 06:44:33,398 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2025-03-17 06:44:33,398 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 246 transitions, 2577 flow [2025-03-17 06:44:33,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:33,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:33,398 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] [2025-03-17 06:44:33,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-17 06:44:33,398 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:33,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1548188703, now seen corresponding path program 30 times [2025-03-17 06:44:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068721614] [2025-03-17 06:44:33,399 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:44:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:33,403 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:33,408 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:33,408 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:44:33,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:33,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:33,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068721614] [2025-03-17 06:44:33,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068721614] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:33,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:33,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753583896] [2025-03-17 06:44:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:33,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:33,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:33,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:33,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:33,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 246 transitions, 2577 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:33,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:33,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:33,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:34,616 INFO L124 PetriNetUnfolderBase]: 3804/6486 cut-off events. [2025-03-17 06:44:34,616 INFO L125 PetriNetUnfolderBase]: For 132796/132804 co-relation queries the response was YES. [2025-03-17 06:44:34,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33604 conditions, 6486 events. 3804/6486 cut-off events. For 132796/132804 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 45104 event pairs, 1605 based on Foata normal form. 3/6343 useless extension candidates. Maximal degree in co-relation 33492. Up to 5579 conditions per place. [2025-03-17 06:44:34,663 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 250 selfloop transitions, 41 changer transitions 4/300 dead transitions. [2025-03-17 06:44:34,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 300 transitions, 3614 flow [2025-03-17 06:44:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2025-03-17 06:44:34,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43073593073593075 [2025-03-17 06:44:34,664 INFO L175 Difference]: Start difference. First operand has 251 places, 246 transitions, 2577 flow. Second operand 11 states and 199 transitions. [2025-03-17 06:44:34,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 300 transitions, 3614 flow [2025-03-17 06:44:34,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 300 transitions, 3478 flow, removed 33 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:34,832 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 2609 flow [2025-03-17 06:44:34,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2609, PETRI_PLACES=255, PETRI_TRANSITIONS=250} [2025-03-17 06:44:34,832 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2025-03-17 06:44:34,832 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 2609 flow [2025-03-17 06:44:34,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:34,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:34,832 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] [2025-03-17 06:44:34,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-17 06:44:34,833 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:34,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash 664372597, now seen corresponding path program 31 times [2025-03-17 06:44:34,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:34,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138167174] [2025-03-17 06:44:34,833 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:44:34,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:34,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:44:34,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:34,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:34,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:35,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138167174] [2025-03-17 06:44:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138167174] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:35,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:35,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:35,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290140766] [2025-03-17 06:44:35,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:35,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:35,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:35,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:35,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:35,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:35,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 250 transitions, 2609 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:35,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:35,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:35,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:36,074 INFO L124 PetriNetUnfolderBase]: 3840/6541 cut-off events. [2025-03-17 06:44:36,074 INFO L125 PetriNetUnfolderBase]: For 131515/131515 co-relation queries the response was YES. [2025-03-17 06:44:36,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33647 conditions, 6541 events. 3840/6541 cut-off events. For 131515/131515 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 45358 event pairs, 1699 based on Foata normal form. 1/6403 useless extension candidates. Maximal degree in co-relation 33533. Up to 5713 conditions per place. [2025-03-17 06:44:36,129 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 254 selfloop transitions, 37 changer transitions 3/299 dead transitions. [2025-03-17 06:44:36,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 299 transitions, 3617 flow [2025-03-17 06:44:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2025-03-17 06:44:36,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41774891774891776 [2025-03-17 06:44:36,130 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 2609 flow. Second operand 11 states and 193 transitions. [2025-03-17 06:44:36,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 299 transitions, 3617 flow [2025-03-17 06:44:36,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 299 transitions, 3463 flow, removed 38 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:36,333 INFO L231 Difference]: Finished difference. Result has 259 places, 253 transitions, 2603 flow [2025-03-17 06:44:36,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2603, PETRI_PLACES=259, PETRI_TRANSITIONS=253} [2025-03-17 06:44:36,333 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2025-03-17 06:44:36,333 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 253 transitions, 2603 flow [2025-03-17 06:44:36,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:36,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:36,333 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] [2025-03-17 06:44:36,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-17 06:44:36,334 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:36,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1867907277, now seen corresponding path program 32 times [2025-03-17 06:44:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:36,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315508873] [2025-03-17 06:44:36,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:44:36,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:36,340 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:36,347 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:36,347 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:44:36,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:36,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:36,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315508873] [2025-03-17 06:44:36,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315508873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:36,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:36,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:36,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077373414] [2025-03-17 06:44:36,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:36,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:36,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:36,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:36,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:36,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:36,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 253 transitions, 2603 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:36,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:36,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:36,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:37,767 INFO L124 PetriNetUnfolderBase]: 3840/6549 cut-off events. [2025-03-17 06:44:37,767 INFO L125 PetriNetUnfolderBase]: For 129070/129070 co-relation queries the response was YES. [2025-03-17 06:44:37,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33383 conditions, 6549 events. 3840/6549 cut-off events. For 129070/129070 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 45482 event pairs, 1706 based on Foata normal form. 1/6406 useless extension candidates. Maximal degree in co-relation 33267. Up to 5726 conditions per place. [2025-03-17 06:44:37,834 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 256 selfloop transitions, 35 changer transitions 3/299 dead transitions. [2025-03-17 06:44:37,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 299 transitions, 3561 flow [2025-03-17 06:44:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2025-03-17 06:44:37,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2025-03-17 06:44:37,835 INFO L175 Difference]: Start difference. First operand has 259 places, 253 transitions, 2603 flow. Second operand 11 states and 190 transitions. [2025-03-17 06:44:37,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 299 transitions, 3561 flow [2025-03-17 06:44:38,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 299 transitions, 3421 flow, removed 34 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:38,033 INFO L231 Difference]: Finished difference. Result has 263 places, 255 transitions, 2559 flow [2025-03-17 06:44:38,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2559, PETRI_PLACES=263, PETRI_TRANSITIONS=255} [2025-03-17 06:44:38,034 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2025-03-17 06:44:38,034 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 255 transitions, 2559 flow [2025-03-17 06:44:38,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:38,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:38,034 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] [2025-03-17 06:44:38,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-03-17 06:44:38,034 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:38,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1526701283, now seen corresponding path program 33 times [2025-03-17 06:44:38,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:38,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558466450] [2025-03-17 06:44:38,035 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:44:38,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:38,040 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:38,049 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:38,049 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:44:38,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:38,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:38,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558466450] [2025-03-17 06:44:38,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558466450] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:38,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:38,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442255885] [2025-03-17 06:44:38,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:38,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:38,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:38,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:38,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:38,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:38,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 255 transitions, 2559 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:38,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:38,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:38,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:39,307 INFO L124 PetriNetUnfolderBase]: 3971/6772 cut-off events. [2025-03-17 06:44:39,308 INFO L125 PetriNetUnfolderBase]: For 145221/145221 co-relation queries the response was YES. [2025-03-17 06:44:39,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35306 conditions, 6772 events. 3971/6772 cut-off events. For 145221/145221 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 47411 event pairs, 1744 based on Foata normal form. 1/6621 useless extension candidates. Maximal degree in co-relation 35188. Up to 5839 conditions per place. [2025-03-17 06:44:39,380 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 272 selfloop transitions, 35 changer transitions 3/315 dead transitions. [2025-03-17 06:44:39,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 315 transitions, 4044 flow [2025-03-17 06:44:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2025-03-17 06:44:39,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2025-03-17 06:44:39,381 INFO L175 Difference]: Start difference. First operand has 263 places, 255 transitions, 2559 flow. Second operand 11 states and 200 transitions. [2025-03-17 06:44:39,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 315 transitions, 4044 flow [2025-03-17 06:44:39,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 315 transitions, 3976 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:39,611 INFO L231 Difference]: Finished difference. Result has 269 places, 264 transitions, 2976 flow [2025-03-17 06:44:39,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2976, PETRI_PLACES=269, PETRI_TRANSITIONS=264} [2025-03-17 06:44:39,612 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2025-03-17 06:44:39,612 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 264 transitions, 2976 flow [2025-03-17 06:44:39,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:39,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:39,612 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] [2025-03-17 06:44:39,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-17 06:44:39,612 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:39,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:39,613 INFO L85 PathProgramCache]: Analyzing trace with hash -932065101, now seen corresponding path program 34 times [2025-03-17 06:44:39,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:39,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111799532] [2025-03-17 06:44:39,613 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:44:39,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:39,618 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:39,624 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:39,625 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:44:39,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:39,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:39,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111799532] [2025-03-17 06:44:39,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111799532] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:39,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:39,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:39,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962875992] [2025-03-17 06:44:39,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:39,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:39,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:39,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:39,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:39,933 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-03-17 06:44:39,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 264 transitions, 2976 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:39,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:39,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-03-17 06:44:39,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:40,910 INFO L124 PetriNetUnfolderBase]: 4381/7427 cut-off events. [2025-03-17 06:44:40,910 INFO L125 PetriNetUnfolderBase]: For 209074/209074 co-relation queries the response was YES. [2025-03-17 06:44:40,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41146 conditions, 7427 events. 4381/7427 cut-off events. For 209074/209074 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 52061 event pairs, 1891 based on Foata normal form. 1/7253 useless extension candidates. Maximal degree in co-relation 41024. Up to 6270 conditions per place. [2025-03-17 06:44:41,094 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 299 selfloop transitions, 39 changer transitions 3/345 dead transitions. [2025-03-17 06:44:41,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 345 transitions, 4712 flow [2025-03-17 06:44:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2025-03-17 06:44:41,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45670995670995673 [2025-03-17 06:44:41,095 INFO L175 Difference]: Start difference. First operand has 269 places, 264 transitions, 2976 flow. Second operand 11 states and 211 transitions. [2025-03-17 06:44:41,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 345 transitions, 4712 flow [2025-03-17 06:44:41,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 345 transitions, 4378 flow, removed 151 selfloop flow, removed 5 redundant places. [2025-03-17 06:44:41,447 INFO L231 Difference]: Finished difference. Result has 279 places, 276 transitions, 3184 flow [2025-03-17 06:44:41,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3184, PETRI_PLACES=279, PETRI_TRANSITIONS=276} [2025-03-17 06:44:41,447 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2025-03-17 06:44:41,447 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 276 transitions, 3184 flow [2025-03-17 06:44:41,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:41,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:41,447 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] [2025-03-17 06:44:41,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-17 06:44:41,448 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:41,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash 981867877, now seen corresponding path program 35 times [2025-03-17 06:44:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:41,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820373390] [2025-03-17 06:44:41,448 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:44:41,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:41,453 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:41,458 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:41,459 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:44:41,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:41,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:41,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820373390] [2025-03-17 06:44:41,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820373390] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:41,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379929519] [2025-03-17 06:44:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:41,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:41,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:41,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:41,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:41,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:41,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 276 transitions, 3184 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:41,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:41,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:41,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:42,733 INFO L124 PetriNetUnfolderBase]: 4244/7255 cut-off events. [2025-03-17 06:44:42,733 INFO L125 PetriNetUnfolderBase]: For 206970/206970 co-relation queries the response was YES. [2025-03-17 06:44:42,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40118 conditions, 7255 events. 4244/7255 cut-off events. For 206970/206970 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 51511 event pairs, 1916 based on Foata normal form. 1/7088 useless extension candidates. Maximal degree in co-relation 39990. Up to 6355 conditions per place. [2025-03-17 06:44:42,835 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 281 selfloop transitions, 35 changer transitions 4/325 dead transitions. [2025-03-17 06:44:42,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 325 transitions, 4322 flow [2025-03-17 06:44:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2025-03-17 06:44:42,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2025-03-17 06:44:42,836 INFO L175 Difference]: Start difference. First operand has 279 places, 276 transitions, 3184 flow. Second operand 11 states and 192 transitions. [2025-03-17 06:44:42,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 325 transitions, 4322 flow [2025-03-17 06:44:43,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 325 transitions, 3998 flow, removed 147 selfloop flow, removed 4 redundant places. [2025-03-17 06:44:43,308 INFO L231 Difference]: Finished difference. Result has 288 places, 282 transitions, 3115 flow [2025-03-17 06:44:43,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3115, PETRI_PLACES=288, PETRI_TRANSITIONS=282} [2025-03-17 06:44:43,309 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2025-03-17 06:44:43,309 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 282 transitions, 3115 flow [2025-03-17 06:44:43,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:43,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:43,309 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] [2025-03-17 06:44:43,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-17 06:44:43,309 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:43,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:43,310 INFO L85 PathProgramCache]: Analyzing trace with hash 266145759, now seen corresponding path program 36 times [2025-03-17 06:44:43,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:43,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389440313] [2025-03-17 06:44:43,310 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:44:43,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:43,314 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:43,319 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:43,319 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:44:43,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389440313] [2025-03-17 06:44:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389440313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:43,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:43,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:43,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199200026] [2025-03-17 06:44:43,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:43,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:43,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:43,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:43,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:43,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:43,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 282 transitions, 3115 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:43,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:43,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:43,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:44,646 INFO L124 PetriNetUnfolderBase]: 4395/7499 cut-off events. [2025-03-17 06:44:44,646 INFO L125 PetriNetUnfolderBase]: For 208634/208634 co-relation queries the response was YES. [2025-03-17 06:44:44,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41009 conditions, 7499 events. 4395/7499 cut-off events. For 208634/208634 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 53572 event pairs, 1948 based on Foata normal form. 1/7336 useless extension candidates. Maximal degree in co-relation 40877. Up to 6379 conditions per place. [2025-03-17 06:44:44,739 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 292 selfloop transitions, 41 changer transitions 3/341 dead transitions. [2025-03-17 06:44:44,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 341 transitions, 4607 flow [2025-03-17 06:44:44,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2025-03-17 06:44:44,740 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-03-17 06:44:44,740 INFO L175 Difference]: Start difference. First operand has 288 places, 282 transitions, 3115 flow. Second operand 11 states and 203 transitions. [2025-03-17 06:44:44,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 341 transitions, 4607 flow [2025-03-17 06:44:45,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 341 transitions, 4389 flow, removed 90 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:45,269 INFO L231 Difference]: Finished difference. Result has 295 places, 289 transitions, 3350 flow [2025-03-17 06:44:45,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3350, PETRI_PLACES=295, PETRI_TRANSITIONS=289} [2025-03-17 06:44:45,269 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2025-03-17 06:44:45,269 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 289 transitions, 3350 flow [2025-03-17 06:44:45,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:45,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:45,269 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] [2025-03-17 06:44:45,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-17 06:44:45,269 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:45,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash 112898887, now seen corresponding path program 37 times [2025-03-17 06:44:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:45,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601598230] [2025-03-17 06:44:45,270 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:44:45,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:45,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:44:45,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:45,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:45,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:45,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:45,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601598230] [2025-03-17 06:44:45,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601598230] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:45,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:45,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:45,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875524533] [2025-03-17 06:44:45,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:45,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:45,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:45,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:45,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:45,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:45,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 289 transitions, 3350 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:45,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:45,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:45,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:46,676 INFO L124 PetriNetUnfolderBase]: 4458/7614 cut-off events. [2025-03-17 06:44:46,677 INFO L125 PetriNetUnfolderBase]: For 241409/241409 co-relation queries the response was YES. [2025-03-17 06:44:46,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42838 conditions, 7614 events. 4458/7614 cut-off events. For 241409/241409 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 54686 event pairs, 2030 based on Foata normal form. 1/7450 useless extension candidates. Maximal degree in co-relation 42702. Up to 6612 conditions per place. [2025-03-17 06:44:46,773 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 306 selfloop transitions, 34 changer transitions 3/348 dead transitions. [2025-03-17 06:44:46,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 348 transitions, 4787 flow [2025-03-17 06:44:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:46,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2025-03-17 06:44:46,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2025-03-17 06:44:46,776 INFO L175 Difference]: Start difference. First operand has 295 places, 289 transitions, 3350 flow. Second operand 11 states and 202 transitions. [2025-03-17 06:44:46,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 348 transitions, 4787 flow [2025-03-17 06:44:47,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 348 transitions, 4461 flow, removed 144 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:47,276 INFO L231 Difference]: Finished difference. Result has 302 places, 294 transitions, 3338 flow [2025-03-17 06:44:47,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3338, PETRI_PLACES=302, PETRI_TRANSITIONS=294} [2025-03-17 06:44:47,277 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2025-03-17 06:44:47,277 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 294 transitions, 3338 flow [2025-03-17 06:44:47,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:47,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:47,277 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] [2025-03-17 06:44:47,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-17 06:44:47,278 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:47,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:47,278 INFO L85 PathProgramCache]: Analyzing trace with hash -610226707, now seen corresponding path program 38 times [2025-03-17 06:44:47,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:47,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798617408] [2025-03-17 06:44:47,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:44:47,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:47,283 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:47,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:47,289 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:44:47,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:47,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798617408] [2025-03-17 06:44:47,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798617408] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:47,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:47,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955973647] [2025-03-17 06:44:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:47,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:47,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:47,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:47,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:47,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 294 transitions, 3338 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:47,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:47,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:47,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:48,754 INFO L124 PetriNetUnfolderBase]: 4458/7606 cut-off events. [2025-03-17 06:44:48,754 INFO L125 PetriNetUnfolderBase]: For 230027/230027 co-relation queries the response was YES. [2025-03-17 06:44:48,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41705 conditions, 7606 events. 4458/7606 cut-off events. For 230027/230027 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 54504 event pairs, 2054 based on Foata normal form. 1/7446 useless extension candidates. Maximal degree in co-relation 41565. Up to 6689 conditions per place. [2025-03-17 06:44:48,852 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 302 selfloop transitions, 33 changer transitions 3/343 dead transitions. [2025-03-17 06:44:48,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 343 transitions, 4517 flow [2025-03-17 06:44:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2025-03-17 06:44:48,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41774891774891776 [2025-03-17 06:44:48,853 INFO L175 Difference]: Start difference. First operand has 302 places, 294 transitions, 3338 flow. Second operand 11 states and 193 transitions. [2025-03-17 06:44:48,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 343 transitions, 4517 flow [2025-03-17 06:44:49,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 343 transitions, 4272 flow, removed 105 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:49,430 INFO L231 Difference]: Finished difference. Result has 308 places, 297 transitions, 3244 flow [2025-03-17 06:44:49,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3244, PETRI_PLACES=308, PETRI_TRANSITIONS=297} [2025-03-17 06:44:49,431 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2025-03-17 06:44:49,431 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 297 transitions, 3244 flow [2025-03-17 06:44:49,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:49,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:49,431 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] [2025-03-17 06:44:49,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-03-17 06:44:49,431 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:49,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1204824381, now seen corresponding path program 39 times [2025-03-17 06:44:49,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:49,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265776384] [2025-03-17 06:44:49,432 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:44:49,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:49,439 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:49,445 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:49,445 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:44:49,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:49,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:49,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265776384] [2025-03-17 06:44:49,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265776384] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:49,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:49,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:49,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424707353] [2025-03-17 06:44:49,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:49,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:49,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:49,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:49,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:49,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:49,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 297 transitions, 3244 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:49,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:49,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:49,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:50,984 INFO L124 PetriNetUnfolderBase]: 4521/7722 cut-off events. [2025-03-17 06:44:50,984 INFO L125 PetriNetUnfolderBase]: For 232723/232723 co-relation queries the response was YES. [2025-03-17 06:44:51,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42221 conditions, 7722 events. 4521/7722 cut-off events. For 232723/232723 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 55529 event pairs, 2100 based on Foata normal form. 1/7559 useless extension candidates. Maximal degree in co-relation 42078. Up to 6704 conditions per place. [2025-03-17 06:44:51,085 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 312 selfloop transitions, 35 changer transitions 3/355 dead transitions. [2025-03-17 06:44:51,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 355 transitions, 4712 flow [2025-03-17 06:44:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2025-03-17 06:44:51,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2025-03-17 06:44:51,086 INFO L175 Difference]: Start difference. First operand has 308 places, 297 transitions, 3244 flow. Second operand 11 states and 202 transitions. [2025-03-17 06:44:51,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 355 transitions, 4712 flow [2025-03-17 06:44:51,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 355 transitions, 4586 flow, removed 32 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:51,682 INFO L231 Difference]: Finished difference. Result has 313 places, 302 transitions, 3442 flow [2025-03-17 06:44:51,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3442, PETRI_PLACES=313, PETRI_TRANSITIONS=302} [2025-03-17 06:44:51,683 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2025-03-17 06:44:51,683 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 302 transitions, 3442 flow [2025-03-17 06:44:51,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:51,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:51,683 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] [2025-03-17 06:44:51,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-17 06:44:51,683 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:51,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash 143481869, now seen corresponding path program 40 times [2025-03-17 06:44:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:51,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788140118] [2025-03-17 06:44:51,684 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:44:51,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:51,689 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:51,695 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:51,695 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:44:51,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:51,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:51,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788140118] [2025-03-17 06:44:51,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788140118] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:51,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:51,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:51,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757106979] [2025-03-17 06:44:51,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:51,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:51,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:51,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:51,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:51,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-03-17 06:44:51,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 302 transitions, 3442 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:51,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:51,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-03-17 06:44:51,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:53,137 INFO L124 PetriNetUnfolderBase]: 4748/8067 cut-off events. [2025-03-17 06:44:53,137 INFO L125 PetriNetUnfolderBase]: For 259442/259442 co-relation queries the response was YES. [2025-03-17 06:44:53,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44512 conditions, 8067 events. 4748/8067 cut-off events. For 259442/259442 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 57629 event pairs, 2165 based on Foata normal form. 1/7897 useless extension candidates. Maximal degree in co-relation 44366. Up to 6864 conditions per place. [2025-03-17 06:44:53,239 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 322 selfloop transitions, 41 changer transitions 5/372 dead transitions. [2025-03-17 06:44:53,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 372 transitions, 4873 flow [2025-03-17 06:44:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2025-03-17 06:44:53,240 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2025-03-17 06:44:53,240 INFO L175 Difference]: Start difference. First operand has 313 places, 302 transitions, 3442 flow. Second operand 11 states and 209 transitions. [2025-03-17 06:44:53,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 372 transitions, 4873 flow [2025-03-17 06:44:53,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 372 transitions, 4617 flow, removed 112 selfloop flow, removed 5 redundant places. [2025-03-17 06:44:53,760 INFO L231 Difference]: Finished difference. Result has 321 places, 307 transitions, 3413 flow [2025-03-17 06:44:53,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3413, PETRI_PLACES=321, PETRI_TRANSITIONS=307} [2025-03-17 06:44:53,761 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2025-03-17 06:44:53,761 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 307 transitions, 3413 flow [2025-03-17 06:44:53,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2025-03-17 06:44:53,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:53,761 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] [2025-03-17 06:44:53,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2025-03-17 06:44:53,761 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:53,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash 740818527, now seen corresponding path program 41 times [2025-03-17 06:44:53,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:53,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071570429] [2025-03-17 06:44:53,762 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:44:53,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:53,767 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:53,772 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:53,772 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:44:53,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:53,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:53,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071570429] [2025-03-17 06:44:53,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071570429] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:53,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:53,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:53,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960405420] [2025-03-17 06:44:53,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:53,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:53,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:53,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:53,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:54,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:54,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 307 transitions, 3413 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:54,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:54,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:54,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:55,287 INFO L124 PetriNetUnfolderBase]: 4550/7793 cut-off events. [2025-03-17 06:44:55,287 INFO L125 PetriNetUnfolderBase]: For 230988/230988 co-relation queries the response was YES. [2025-03-17 06:44:55,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42187 conditions, 7793 events. 4550/7793 cut-off events. For 230988/230988 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 56110 event pairs, 2116 based on Foata normal form. 1/7624 useless extension candidates. Maximal degree in co-relation 42037. Up to 6795 conditions per place. [2025-03-17 06:44:55,368 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 309 selfloop transitions, 40 changer transitions 4/358 dead transitions. [2025-03-17 06:44:55,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 358 transitions, 4578 flow [2025-03-17 06:44:55,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2025-03-17 06:44:55,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-03-17 06:44:55,369 INFO L175 Difference]: Start difference. First operand has 321 places, 307 transitions, 3413 flow. Second operand 11 states and 198 transitions. [2025-03-17 06:44:55,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 358 transitions, 4578 flow [2025-03-17 06:44:55,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 358 transitions, 4383 flow, removed 65 selfloop flow, removed 6 redundant places. [2025-03-17 06:44:55,775 INFO L231 Difference]: Finished difference. Result has 327 places, 311 transitions, 3404 flow [2025-03-17 06:44:55,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3404, PETRI_PLACES=327, PETRI_TRANSITIONS=311} [2025-03-17 06:44:55,776 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2025-03-17 06:44:55,776 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 311 transitions, 3404 flow [2025-03-17 06:44:55,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:55,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:55,776 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] [2025-03-17 06:44:55,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-03-17 06:44:55,776 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:55,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1341587469, now seen corresponding path program 42 times [2025-03-17 06:44:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401126392] [2025-03-17 06:44:55,777 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:44:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:55,782 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:44:55,786 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 29 of 31 statements. [2025-03-17 06:44:55,786 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:44:55,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:56,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401126392] [2025-03-17 06:44:56,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401126392] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:56,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:56,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:56,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085193985] [2025-03-17 06:44:56,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:56,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:56,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:56,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:56,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:56,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:56,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 311 transitions, 3404 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:56,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:56,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:56,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:57,195 INFO L124 PetriNetUnfolderBase]: 4586/7860 cut-off events. [2025-03-17 06:44:57,195 INFO L125 PetriNetUnfolderBase]: For 226316/226316 co-relation queries the response was YES. [2025-03-17 06:44:57,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42004 conditions, 7860 events. 4586/7860 cut-off events. For 226316/226316 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 56868 event pairs, 2178 based on Foata normal form. 1/7692 useless extension candidates. Maximal degree in co-relation 41852. Up to 6929 conditions per place. [2025-03-17 06:44:57,303 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 313 selfloop transitions, 36 changer transitions 3/357 dead transitions. [2025-03-17 06:44:57,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 357 transitions, 4540 flow [2025-03-17 06:44:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2025-03-17 06:44:57,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2025-03-17 06:44:57,303 INFO L175 Difference]: Start difference. First operand has 327 places, 311 transitions, 3404 flow. Second operand 11 states and 192 transitions. [2025-03-17 06:44:57,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 357 transitions, 4540 flow [2025-03-17 06:44:57,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 357 transitions, 4356 flow, removed 54 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:57,753 INFO L231 Difference]: Finished difference. Result has 331 places, 314 transitions, 3386 flow [2025-03-17 06:44:57,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3220, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3386, PETRI_PLACES=331, PETRI_TRANSITIONS=314} [2025-03-17 06:44:57,754 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2025-03-17 06:44:57,754 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 314 transitions, 3386 flow [2025-03-17 06:44:57,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:57,754 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:57,754 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] [2025-03-17 06:44:57,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2025-03-17 06:44:57,754 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:57,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash -138052789, now seen corresponding path program 43 times [2025-03-17 06:44:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:57,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564005477] [2025-03-17 06:44:57,755 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:44:57,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:57,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:44:57,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:44:57,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:57,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:44:58,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:58,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564005477] [2025-03-17 06:44:58,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564005477] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:44:58,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:44:58,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:44:58,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582225888] [2025-03-17 06:44:58,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:44:58,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:44:58,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:58,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:44:58,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:44:58,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-03-17 06:44:58,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 314 transitions, 3386 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:58,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:58,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-03-17 06:44:58,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:44:59,120 INFO L124 PetriNetUnfolderBase]: 4586/7868 cut-off events. [2025-03-17 06:44:59,120 INFO L125 PetriNetUnfolderBase]: For 220768/220768 co-relation queries the response was YES. [2025-03-17 06:44:59,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41599 conditions, 7868 events. 4586/7868 cut-off events. For 220768/220768 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 56982 event pairs, 2185 based on Foata normal form. 1/7695 useless extension candidates. Maximal degree in co-relation 41445. Up to 6942 conditions per place. [2025-03-17 06:44:59,215 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 315 selfloop transitions, 34 changer transitions 3/357 dead transitions. [2025-03-17 06:44:59,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 357 transitions, 4452 flow [2025-03-17 06:44:59,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:44:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 06:44:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2025-03-17 06:44:59,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-03-17 06:44:59,216 INFO L175 Difference]: Start difference. First operand has 331 places, 314 transitions, 3386 flow. Second operand 11 states and 189 transitions. [2025-03-17 06:44:59,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 357 transitions, 4452 flow [2025-03-17 06:44:59,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 357 transitions, 4282 flow, removed 50 selfloop flow, removed 8 redundant places. [2025-03-17 06:44:59,650 INFO L231 Difference]: Finished difference. Result has 335 places, 316 transitions, 3310 flow [2025-03-17 06:44:59,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3310, PETRI_PLACES=335, PETRI_TRANSITIONS=316} [2025-03-17 06:44:59,651 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2025-03-17 06:44:59,651 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 316 transitions, 3310 flow [2025-03-17 06:44:59,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2025-03-17 06:44:59,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:44:59,651 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] [2025-03-17 06:44:59,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2025-03-17 06:44:59,651 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:44:59,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:44:59,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1172990540, now seen corresponding path program 1 times [2025-03-17 06:44:59,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:44:59,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754245824] [2025-03-17 06:44:59,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:44:59,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:44:59,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 06:44:59,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 06:44:59,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:59,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:44:59,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:44:59,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754245824] [2025-03-17 06:44:59,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754245824] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:44:59,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435171073] [2025-03-17 06:44:59,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:44:59,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:44:59,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:44:59,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:44:59,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:44:59,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 06:44:59,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 06:44:59,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:44:59,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:44:59,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 06:44:59,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:44:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:44:59,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:44:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:44:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435171073] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:44:59,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:44:59,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 06:44:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881868213] [2025-03-17 06:44:59,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:44:59,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 06:44:59,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:44:59,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 06:44:59,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:44:59,962 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2025-03-17 06:44:59,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 316 transitions, 3310 flow. Second operand has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 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) [2025-03-17 06:44:59,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:44:59,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2025-03-17 06:44:59,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:45:01,939 INFO L124 PetriNetUnfolderBase]: 7743/13966 cut-off events. [2025-03-17 06:45:01,940 INFO L125 PetriNetUnfolderBase]: For 473746/474030 co-relation queries the response was YES. [2025-03-17 06:45:02,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75827 conditions, 13966 events. 7743/13966 cut-off events. For 473746/474030 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 117788 event pairs, 4670 based on Foata normal form. 292/13813 useless extension candidates. Maximal degree in co-relation 75671. Up to 6301 conditions per place. [2025-03-17 06:45:02,184 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 531 selfloop transitions, 5 changer transitions 12/592 dead transitions. [2025-03-17 06:45:02,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 592 transitions, 7392 flow [2025-03-17 06:45:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:45:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:45:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2025-03-17 06:45:02,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2025-03-17 06:45:02,186 INFO L175 Difference]: Start difference. First operand has 335 places, 316 transitions, 3310 flow. Second operand 6 states and 124 transitions. [2025-03-17 06:45:02,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 592 transitions, 7392 flow [2025-03-17 06:45:02,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 592 transitions, 7260 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-03-17 06:45:02,885 INFO L231 Difference]: Finished difference. Result has 335 places, 319 transitions, 3286 flow [2025-03-17 06:45:02,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3286, PETRI_PLACES=335, PETRI_TRANSITIONS=319} [2025-03-17 06:45:02,886 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2025-03-17 06:45:02,886 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 319 transitions, 3286 flow [2025-03-17 06:45:02,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 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) [2025-03-17 06:45:02,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:45:02,886 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:45:02,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:45:03,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-03-17 06:45:03,087 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:45:03,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:45:03,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1131756304, now seen corresponding path program 1 times [2025-03-17 06:45:03,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:45:03,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389203228] [2025-03-17 06:45:03,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:45:03,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:45:03,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 06:45:03,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 06:45:03,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:45:03,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:45:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:45:03,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:45:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389203228] [2025-03-17 06:45:03,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389203228] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:45:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49416662] [2025-03-17 06:45:03,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:45:03,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:45:03,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:45:03,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:45:03,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:45:03,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 06:45:03,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 06:45:03,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:45:03,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:45:03,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 06:45:03,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:45:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:45:03,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:45:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:45:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49416662] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:45:03,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:45:03,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2025-03-17 06:45:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568397750] [2025-03-17 06:45:03,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:45:03,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:45:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:45:03,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:45:03,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:45:03,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2025-03-17 06:45:03,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 319 transitions, 3286 flow. Second operand has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 13 states have internal predecessors, (162), 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) [2025-03-17 06:45:03,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:45:03,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2025-03-17 06:45:03,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:45:07,607 INFO L124 PetriNetUnfolderBase]: 12519/24000 cut-off events. [2025-03-17 06:45:07,607 INFO L125 PetriNetUnfolderBase]: For 887221/887499 co-relation queries the response was YES. [2025-03-17 06:45:07,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127614 conditions, 24000 events. 12519/24000 cut-off events. For 887221/887499 co-relation queries the response was YES. Maximal size of possible extension queue 2209. Compared 236329 event pairs, 4970 based on Foata normal form. 1706/24936 useless extension candidates. Maximal degree in co-relation 127455. Up to 10722 conditions per place. [2025-03-17 06:45:08,011 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 481 selfloop transitions, 9 changer transitions 52/586 dead transitions. [2025-03-17 06:45:08,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 586 transitions, 7847 flow [2025-03-17 06:45:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:45:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 06:45:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2025-03-17 06:45:08,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2025-03-17 06:45:08,012 INFO L175 Difference]: Start difference. First operand has 335 places, 319 transitions, 3286 flow. Second operand 8 states and 167 transitions. [2025-03-17 06:45:08,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 586 transitions, 7847 flow [2025-03-17 06:45:09,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 586 transitions, 7815 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-03-17 06:45:09,246 INFO L231 Difference]: Finished difference. Result has 342 places, 323 transitions, 3477 flow [2025-03-17 06:45:09,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3477, PETRI_PLACES=342, PETRI_TRANSITIONS=323} [2025-03-17 06:45:09,246 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2025-03-17 06:45:09,246 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 323 transitions, 3477 flow [2025-03-17 06:45:09,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 13 states have internal predecessors, (162), 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) [2025-03-17 06:45:09,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:45:09,247 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:45:09,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:45:09,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-03-17 06:45:09,447 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:45:09,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:45:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash 208772560, now seen corresponding path program 2 times [2025-03-17 06:45:09,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:45:09,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312944147] [2025-03-17 06:45:09,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:45:09,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:45:09,453 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-17 06:45:09,457 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 32 of 35 statements. [2025-03-17 06:45:09,457 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:45:09,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:45:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 06:45:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:45:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312944147] [2025-03-17 06:45:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312944147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:45:09,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:45:09,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:45:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343423522] [2025-03-17 06:45:09,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:45:09,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:45:09,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:45:09,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:45:09,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:45:09,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-03-17 06:45:09,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 323 transitions, 3477 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-03-17 06:45:09,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:45:09,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-03-17 06:45:09,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:45:14,831 INFO L124 PetriNetUnfolderBase]: 18679/33035 cut-off events. [2025-03-17 06:45:14,831 INFO L125 PetriNetUnfolderBase]: For 1279244/1279438 co-relation queries the response was YES. [2025-03-17 06:45:15,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180574 conditions, 33035 events. 18679/33035 cut-off events. For 1279244/1279438 co-relation queries the response was YES. Maximal size of possible extension queue 2539. Compared 304980 event pairs, 7534 based on Foata normal form. 176/31173 useless extension candidates. Maximal degree in co-relation 180413. Up to 24088 conditions per place. [2025-03-17 06:45:15,725 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 385 selfloop transitions, 9 changer transitions 0/436 dead transitions. [2025-03-17 06:45:15,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 436 transitions, 5552 flow [2025-03-17 06:45:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:45:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:45:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2025-03-17 06:45:15,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2025-03-17 06:45:15,726 INFO L175 Difference]: Start difference. First operand has 342 places, 323 transitions, 3477 flow. Second operand 6 states and 116 transitions. [2025-03-17 06:45:15,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 436 transitions, 5552 flow [2025-03-17 06:45:18,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 436 transitions, 5305 flow, removed 118 selfloop flow, removed 4 redundant places. [2025-03-17 06:45:18,453 INFO L231 Difference]: Finished difference. Result has 345 places, 326 transitions, 3389 flow [2025-03-17 06:45:18,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3389, PETRI_PLACES=345, PETRI_TRANSITIONS=326} [2025-03-17 06:45:18,453 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2025-03-17 06:45:18,453 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 326 transitions, 3389 flow [2025-03-17 06:45:18,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-03-17 06:45:18,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:45:18,454 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:45:18,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2025-03-17 06:45:18,454 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 06:45:18,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:45:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1696154334, now seen corresponding path program 2 times [2025-03-17 06:45:18,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:45:18,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378733715] [2025-03-17 06:45:18,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:45:18,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:45:18,462 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-17 06:45:18,471 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 06:45:18,472 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:45:18,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:45:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 06:45:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:45:18,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378733715] [2025-03-17 06:45:18,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378733715] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:45:18,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:45:18,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:45:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522493474] [2025-03-17 06:45:18,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:45:18,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:45:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:45:18,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:45:18,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:45:18,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2025-03-17 06:45:18,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 326 transitions, 3389 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2025-03-17 06:45:18,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:45:18,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2025-03-17 06:45:18,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand