./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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/chl-word-trans.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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:43:45,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:43:45,791 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:43:45,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:43:45,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:43:45,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:43:45,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:43:45,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:43:45,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:43:45,821 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:43:45,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:43:45,821 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:43:45,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:43:45,822 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:43:45,822 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:43:45,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:43:45,823 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:43:45,824 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:43:45,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:43:45,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:43:45,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:43:45,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:43:45,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:43:45,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:43:45,824 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:43:45,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:43:45,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:43:45,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:43:45,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:43:45,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:43:45,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:43:45,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:43:45,825 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 -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2025-03-13 21:43:46,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:43:46,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:43:46,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:43:46,044 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:43:46,044 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:43:46,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2025-03-13 21:43:47,177 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/717151c69/223458eacf8b42758fcec414d76ba31f/FLAG12dfd5828 [2025-03-13 21:43:47,432 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:43:47,435 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2025-03-13 21:43:47,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/717151c69/223458eacf8b42758fcec414d76ba31f/FLAG12dfd5828 [2025-03-13 21:43:47,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/717151c69/223458eacf8b42758fcec414d76ba31f [2025-03-13 21:43:47,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:43:47,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:43:47,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:43:47,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:43:47,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:43:47,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d12e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47, skipping insertion in model container [2025-03-13 21:43:47,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,488 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:43:47,625 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/chl-word-trans.wvr.c[3331,3344] [2025-03-13 21:43:47,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:43:47,642 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:43:47,660 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/chl-word-trans.wvr.c[3331,3344] [2025-03-13 21:43:47,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:43:47,679 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:43:47,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47 WrapperNode [2025-03-13 21:43:47,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:43:47,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:43:47,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:43:47,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:43:47,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,693 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,712 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 156 [2025-03-13 21:43:47,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:43:47,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:43:47,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:43:47,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:43:47,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,745 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-13 21:43:47,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,752 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:43:47,761 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:43:47,761 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:43:47,761 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:43:47,762 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (1/1) ... [2025-03-13 21:43:47,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:43:47,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:43:47,786 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) [2025-03-13 21:43:47,793 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 [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-13 21:43:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-13 21:43:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-13 21:43:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-13 21:43:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:43:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:43:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-13 21:43:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-13 21:43:47,810 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:43:47,885 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:43:47,887 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:43:48,236 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:43:48,237 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:43:48,237 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:43:48,572 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:43:48,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:43:48 BoogieIcfgContainer [2025-03-13 21:43:48,574 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:43:48,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:43:48,575 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:43:48,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:43:48,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:43:47" (1/3) ... [2025-03-13 21:43:48,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aff38cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:43:48, skipping insertion in model container [2025-03-13 21:43:48,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:43:47" (2/3) ... [2025-03-13 21:43:48,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aff38cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:43:48, skipping insertion in model container [2025-03-13 21:43:48,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:43:48" (3/3) ... [2025-03-13 21:43:48,583 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2025-03-13 21:43:48,597 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:43:48,598 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-trans.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-13 21:43:48,598 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:43:48,674 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-13 21:43:48,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2025-03-13 21:43:48,736 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2025-03-13 21:43:48,737 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-13 21:43:48,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-03-13 21:43:48,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2025-03-13 21:43:48,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2025-03-13 21:43:48,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:43:48,763 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;@4fa8b403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:43:48,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-13 21:43:48,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:43:48,782 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2025-03-13 21:43:48,782 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-13 21:43:48,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:48,783 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] [2025-03-13 21:43:48,783 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)] === [2025-03-13 21:43:48,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash 87460751, now seen corresponding path program 1 times [2025-03-13 21:43:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:48,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099247417] [2025-03-13 21:43:48,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:43:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:48,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:43:48,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:43:48,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:43:48,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:49,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:49,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099247417] [2025-03-13 21:43:49,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099247417] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:49,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:49,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:43:49,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836837412] [2025-03-13 21:43:49,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:49,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:43:49,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:49,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:43:49,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:43:49,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:49,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:49,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:49,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:49,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:43:50,051 INFO L124 PetriNetUnfolderBase]: 3667/5069 cut-off events. [2025-03-13 21:43:50,052 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2025-03-13 21:43:50,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10193 conditions, 5069 events. 3667/5069 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 22217 event pairs, 1182 based on Foata normal form. 1/4166 useless extension candidates. Maximal degree in co-relation 9455. Up to 2533 conditions per place. [2025-03-13 21:43:50,089 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 84 selfloop transitions, 13 changer transitions 1/102 dead transitions. [2025-03-13 21:43:50,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 102 transitions, 445 flow [2025-03-13 21:43:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:43:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:43:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-03-13 21:43:50,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2025-03-13 21:43:50,106 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 5 states and 134 transitions. [2025-03-13 21:43:50,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 102 transitions, 445 flow [2025-03-13 21:43:50,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 102 transitions, 415 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-13 21:43:50,125 INFO L231 Difference]: Finished difference. Result has 44 places, 55 transitions, 174 flow [2025-03-13 21:43:50,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=55} [2025-03-13 21:43:50,132 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2025-03-13 21:43:50,133 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 55 transitions, 174 flow [2025-03-13 21:43:50,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:50,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:50,134 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] [2025-03-13 21:43:50,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:43:50,135 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)] === [2025-03-13 21:43:50,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:50,135 INFO L85 PathProgramCache]: Analyzing trace with hash -94369939, now seen corresponding path program 2 times [2025-03-13 21:43:50,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:50,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269108102] [2025-03-13 21:43:50,135 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:43:50,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:50,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:43:50,167 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:43:50,167 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:43:50,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:50,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:50,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269108102] [2025-03-13 21:43:50,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269108102] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:50,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:50,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:43:50,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127383892] [2025-03-13 21:43:50,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:50,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:43:50,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:50,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:43:50,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:43:50,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:50,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:50,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:50,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:50,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:43:51,060 INFO L124 PetriNetUnfolderBase]: 4726/6637 cut-off events. [2025-03-13 21:43:51,060 INFO L125 PetriNetUnfolderBase]: For 1744/1744 co-relation queries the response was YES. [2025-03-13 21:43:51,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15681 conditions, 6637 events. 4726/6637 cut-off events. For 1744/1744 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32794 event pairs, 2307 based on Foata normal form. 1/6099 useless extension candidates. Maximal degree in co-relation 9470. Up to 4654 conditions per place. [2025-03-13 21:43:51,095 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 100 selfloop transitions, 7 changer transitions 3/114 dead transitions. [2025-03-13 21:43:51,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 114 transitions, 574 flow [2025-03-13 21:43:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:43:51,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:43:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-03-13 21:43:51,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-03-13 21:43:51,099 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 174 flow. Second operand 5 states and 131 transitions. [2025-03-13 21:43:51,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 114 transitions, 574 flow [2025-03-13 21:43:51,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 114 transitions, 574 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:43:51,108 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 239 flow [2025-03-13 21:43:51,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2025-03-13 21:43:51,110 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2025-03-13 21:43:51,110 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 239 flow [2025-03-13 21:43:51,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:51,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:51,110 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] [2025-03-13 21:43:51,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:43:51,111 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)] === [2025-03-13 21:43:51,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:51,112 INFO L85 PathProgramCache]: Analyzing trace with hash 79292223, now seen corresponding path program 3 times [2025-03-13 21:43:51,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:51,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770098612] [2025-03-13 21:43:51,112 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:43:51,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:51,125 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:43:51,133 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:43:51,133 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:43:51,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:51,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770098612] [2025-03-13 21:43:51,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770098612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:51,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:51,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:43:51,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328848292] [2025-03-13 21:43:51,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:51,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:43:51,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:51,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:43:51,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:43:51,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:51,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:51,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:51,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:51,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:43:52,022 INFO L124 PetriNetUnfolderBase]: 5714/8169 cut-off events. [2025-03-13 21:43:52,022 INFO L125 PetriNetUnfolderBase]: For 5116/5116 co-relation queries the response was YES. [2025-03-13 21:43:52,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20575 conditions, 8169 events. 5714/8169 cut-off events. For 5116/5116 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 43371 event pairs, 2897 based on Foata normal form. 1/7748 useless extension candidates. Maximal degree in co-relation 14685. Up to 5199 conditions per place. [2025-03-13 21:43:52,057 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 95 selfloop transitions, 17 changer transitions 1/117 dead transitions. [2025-03-13 21:43:52,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 117 transitions, 655 flow [2025-03-13 21:43:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:43:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:43:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2025-03-13 21:43:52,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2025-03-13 21:43:52,059 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 239 flow. Second operand 5 states and 135 transitions. [2025-03-13 21:43:52,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 117 transitions, 655 flow [2025-03-13 21:43:52,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 117 transitions, 645 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-13 21:43:52,075 INFO L231 Difference]: Finished difference. Result has 57 places, 70 transitions, 377 flow [2025-03-13 21:43:52,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=57, PETRI_TRANSITIONS=70} [2025-03-13 21:43:52,076 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2025-03-13 21:43:52,076 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 70 transitions, 377 flow [2025-03-13 21:43:52,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:52,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:52,077 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] [2025-03-13 21:43:52,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:43:52,077 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)] === [2025-03-13 21:43:52,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash -208998537, now seen corresponding path program 4 times [2025-03-13 21:43:52,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:52,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647096414] [2025-03-13 21:43:52,078 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:43:52,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:52,085 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-03-13 21:43:52,090 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 21 of 24 statements. [2025-03-13 21:43:52,090 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-13 21:43:52,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:52,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:52,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647096414] [2025-03-13 21:43:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647096414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:52,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:43:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125546128] [2025-03-13 21:43:52,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:52,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:43:52,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:52,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:43:52,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:43:52,216 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:52,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:43:52,933 INFO L124 PetriNetUnfolderBase]: 6294/9028 cut-off events. [2025-03-13 21:43:52,933 INFO L125 PetriNetUnfolderBase]: For 11483/11483 co-relation queries the response was YES. [2025-03-13 21:43:52,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25055 conditions, 9028 events. 6294/9028 cut-off events. For 11483/11483 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 49902 event pairs, 2995 based on Foata normal form. 1/8574 useless extension candidates. Maximal degree in co-relation 16767. Up to 5754 conditions per place. [2025-03-13 21:43:52,971 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 115 selfloop transitions, 22 changer transitions 1/142 dead transitions. [2025-03-13 21:43:52,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 142 transitions, 957 flow [2025-03-13 21:43:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:43:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:43:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-03-13 21:43:52,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2025-03-13 21:43:52,974 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 377 flow. Second operand 5 states and 137 transitions. [2025-03-13 21:43:52,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 142 transitions, 957 flow [2025-03-13 21:43:52,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 142 transitions, 917 flow, removed 20 selfloop flow, removed 0 redundant places. [2025-03-13 21:43:53,001 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 591 flow [2025-03-13 21:43:53,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2025-03-13 21:43:53,002 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2025-03-13 21:43:53,002 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 591 flow [2025-03-13 21:43:53,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:53,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:53,003 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] [2025-03-13 21:43:53,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:43:53,003 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)] === [2025-03-13 21:43:53,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1281801791, now seen corresponding path program 5 times [2025-03-13 21:43:53,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:53,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926129093] [2025-03-13 21:43:53,004 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:43:53,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:53,012 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:43:53,023 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:43:53,024 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:43:53,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:53,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:53,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926129093] [2025-03-13 21:43:53,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926129093] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:53,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:53,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:43:53,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727832515] [2025-03-13 21:43:53,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:53,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:43:53,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:53,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:43:53,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:43:53,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:53,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 86 transitions, 591 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:53,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:53,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:53,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:43:53,938 INFO L124 PetriNetUnfolderBase]: 6279/8990 cut-off events. [2025-03-13 21:43:53,938 INFO L125 PetriNetUnfolderBase]: For 16562/16592 co-relation queries the response was YES. [2025-03-13 21:43:53,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26954 conditions, 8990 events. 6279/8990 cut-off events. For 16562/16592 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 48987 event pairs, 3188 based on Foata normal form. 1/8761 useless extension candidates. Maximal degree in co-relation 25806. Up to 5855 conditions per place. [2025-03-13 21:43:53,995 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 116 selfloop transitions, 11 changer transitions 3/134 dead transitions. [2025-03-13 21:43:53,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 134 transitions, 1015 flow [2025-03-13 21:43:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:43:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:43:53,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-03-13 21:43:53,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2025-03-13 21:43:53,996 INFO L175 Difference]: Start difference. First operand has 64 places, 86 transitions, 591 flow. Second operand 5 states and 129 transitions. [2025-03-13 21:43:53,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 134 transitions, 1015 flow [2025-03-13 21:43:54,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 134 transitions, 1007 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-13 21:43:54,047 INFO L231 Difference]: Finished difference. Result has 69 places, 86 transitions, 616 flow [2025-03-13 21:43:54,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=69, PETRI_TRANSITIONS=86} [2025-03-13 21:43:54,048 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2025-03-13 21:43:54,048 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 86 transitions, 616 flow [2025-03-13 21:43:54,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:54,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:54,049 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] [2025-03-13 21:43:54,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:43:54,049 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)] === [2025-03-13 21:43:54,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:54,050 INFO L85 PathProgramCache]: Analyzing trace with hash -10481041, now seen corresponding path program 6 times [2025-03-13 21:43:54,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:54,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118466089] [2025-03-13 21:43:54,050 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:43:54,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:54,059 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:43:54,067 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:43:54,067 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-13 21:43:54,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118466089] [2025-03-13 21:43:54,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118466089] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:54,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:54,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:43:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042553266] [2025-03-13 21:43:54,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:54,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:43:54,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:54,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:43:54,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:43:54,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:54,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 86 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:54,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:54,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:54,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:43:54,789 INFO L124 PetriNetUnfolderBase]: 6377/9169 cut-off events. [2025-03-13 21:43:54,790 INFO L125 PetriNetUnfolderBase]: For 19238/19238 co-relation queries the response was YES. [2025-03-13 21:43:54,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27792 conditions, 9169 events. 6377/9169 cut-off events. For 19238/19238 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 50337 event pairs, 2145 based on Foata normal form. 1/8975 useless extension candidates. Maximal degree in co-relation 27243. Up to 4262 conditions per place. [2025-03-13 21:43:54,830 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 96 selfloop transitions, 45 changer transitions 1/146 dead transitions. [2025-03-13 21:43:54,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 146 transitions, 1149 flow [2025-03-13 21:43:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:43:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:43:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-03-13 21:43:54,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2025-03-13 21:43:54,832 INFO L175 Difference]: Start difference. First operand has 69 places, 86 transitions, 616 flow. Second operand 5 states and 134 transitions. [2025-03-13 21:43:54,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 146 transitions, 1149 flow [2025-03-13 21:43:54,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 146 transitions, 1126 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-13 21:43:54,871 INFO L231 Difference]: Finished difference. Result has 73 places, 100 transitions, 859 flow [2025-03-13 21:43:54,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=73, PETRI_TRANSITIONS=100} [2025-03-13 21:43:54,872 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2025-03-13 21:43:54,872 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 100 transitions, 859 flow [2025-03-13 21:43:54,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-13 21:43:54,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:54,873 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, 1, 1] [2025-03-13 21:43:54,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:43:54,873 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)] === [2025-03-13 21:43:54,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash 755775087, now seen corresponding path program 1 times [2025-03-13 21:43:54,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:54,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982470934] [2025-03-13 21:43:54,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:43:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:54,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-13 21:43:54,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 21:43:54,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:43:54,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:55,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:55,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982470934] [2025-03-13 21:43:55,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982470934] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:55,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:55,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:43:55,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483185607] [2025-03-13 21:43:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:55,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:43:55,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:55,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:43:55,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:43:55,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:55,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 100 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2025-03-13 21:43:55,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:55,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:55,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:43:55,852 INFO L124 PetriNetUnfolderBase]: 10557/14877 cut-off events. [2025-03-13 21:43:55,852 INFO L125 PetriNetUnfolderBase]: For 42689/42717 co-relation queries the response was YES. [2025-03-13 21:43:55,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50197 conditions, 14877 events. 10557/14877 cut-off events. For 42689/42717 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 84276 event pairs, 3649 based on Foata normal form. 5/14561 useless extension candidates. Maximal degree in co-relation 44558. Up to 6011 conditions per place. [2025-03-13 21:43:55,907 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 155 selfloop transitions, 25 changer transitions 34/218 dead transitions. [2025-03-13 21:43:55,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 218 transitions, 2162 flow [2025-03-13 21:43:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:43:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:43:55,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2025-03-13 21:43:55,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2025-03-13 21:43:55,909 INFO L175 Difference]: Start difference. First operand has 73 places, 100 transitions, 859 flow. Second operand 7 states and 171 transitions. [2025-03-13 21:43:55,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 218 transitions, 2162 flow [2025-03-13 21:43:56,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 218 transitions, 2038 flow, removed 26 selfloop flow, removed 1 redundant places. [2025-03-13 21:43:56,008 INFO L231 Difference]: Finished difference. Result has 83 places, 113 transitions, 998 flow [2025-03-13 21:43:56,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=998, PETRI_PLACES=83, PETRI_TRANSITIONS=113} [2025-03-13 21:43:56,009 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2025-03-13 21:43:56,009 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 113 transitions, 998 flow [2025-03-13 21:43:56,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2025-03-13 21:43:56,009 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:56,009 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:43:56,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 21:43:56,009 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)] === [2025-03-13 21:43:56,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:56,010 INFO L85 PathProgramCache]: Analyzing trace with hash -125580993, now seen corresponding path program 1 times [2025-03-13 21:43:56,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:56,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754403229] [2025-03-13 21:43:56,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:43:56,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:56,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-13 21:43:56,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 21:43:56,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:43:56,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:56,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:56,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754403229] [2025-03-13 21:43:56,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754403229] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:56,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:56,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:43:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082266683] [2025-03-13 21:43:56,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:56,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:43:56,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:56,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:43:56,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:43:56,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:56,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 113 transitions, 998 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:43:56,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:56,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:56,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:43:57,551 INFO L124 PetriNetUnfolderBase]: 15037/20864 cut-off events. [2025-03-13 21:43:57,552 INFO L125 PetriNetUnfolderBase]: For 66684/66718 co-relation queries the response was YES. [2025-03-13 21:43:57,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73480 conditions, 20864 events. 15037/20864 cut-off events. For 66684/66718 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 118945 event pairs, 4714 based on Foata normal form. 5/20409 useless extension candidates. Maximal degree in co-relation 73375. Up to 9059 conditions per place. [2025-03-13 21:43:57,693 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 183 selfloop transitions, 22 changer transitions 7/216 dead transitions. [2025-03-13 21:43:57,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 216 transitions, 2177 flow [2025-03-13 21:43:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:43:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:43:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2025-03-13 21:43:57,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2025-03-13 21:43:57,695 INFO L175 Difference]: Start difference. First operand has 83 places, 113 transitions, 998 flow. Second operand 5 states and 138 transitions. [2025-03-13 21:43:57,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 216 transitions, 2177 flow [2025-03-13 21:43:57,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 216 transitions, 2133 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-13 21:43:57,870 INFO L231 Difference]: Finished difference. Result has 87 places, 124 transitions, 1159 flow [2025-03-13 21:43:57,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1159, PETRI_PLACES=87, PETRI_TRANSITIONS=124} [2025-03-13 21:43:57,870 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2025-03-13 21:43:57,870 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 124 transitions, 1159 flow [2025-03-13 21:43:57,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:43:57,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:57,870 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:43:57,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 21:43:57,871 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)] === [2025-03-13 21:43:57,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash 193891013, now seen corresponding path program 1 times [2025-03-13 21:43:57,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:57,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844251911] [2025-03-13 21:43:57,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:43:57,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:57,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-13 21:43:57,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 21:43:57,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:43:57,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:57,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:57,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844251911] [2025-03-13 21:43:57,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844251911] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:57,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:57,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:43:57,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934516099] [2025-03-13 21:43:57,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:57,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:43:57,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:57,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:43:57,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:43:57,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:57,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 124 transitions, 1159 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:43:57,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:57,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:57,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:43:59,003 INFO L124 PetriNetUnfolderBase]: 13722/19343 cut-off events. [2025-03-13 21:43:59,003 INFO L125 PetriNetUnfolderBase]: For 66541/66541 co-relation queries the response was YES. [2025-03-13 21:43:59,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69055 conditions, 19343 events. 13722/19343 cut-off events. For 66541/66541 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 110867 event pairs, 4192 based on Foata normal form. 1/18953 useless extension candidates. Maximal degree in co-relation 59824. Up to 8756 conditions per place. [2025-03-13 21:43:59,137 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 176 selfloop transitions, 23 changer transitions 17/220 dead transitions. [2025-03-13 21:43:59,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 220 transitions, 2361 flow [2025-03-13 21:43:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:43:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:43:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-03-13 21:43:59,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-03-13 21:43:59,138 INFO L175 Difference]: Start difference. First operand has 87 places, 124 transitions, 1159 flow. Second operand 5 states and 133 transitions. [2025-03-13 21:43:59,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 220 transitions, 2361 flow [2025-03-13 21:43:59,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 220 transitions, 2314 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-13 21:43:59,404 INFO L231 Difference]: Finished difference. Result has 93 places, 134 transitions, 1358 flow [2025-03-13 21:43:59,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1358, PETRI_PLACES=93, PETRI_TRANSITIONS=134} [2025-03-13 21:43:59,404 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2025-03-13 21:43:59,405 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 134 transitions, 1358 flow [2025-03-13 21:43:59,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:43:59,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:43:59,405 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:43:59,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-13 21:43:59,405 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)] === [2025-03-13 21:43:59,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:43:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1324767437, now seen corresponding path program 2 times [2025-03-13 21:43:59,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:43:59,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616346085] [2025-03-13 21:43:59,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:43:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:43:59,415 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-03-13 21:43:59,425 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 21:43:59,425 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:43:59,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:43:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:43:59,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:43:59,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616346085] [2025-03-13 21:43:59,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616346085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:43:59,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:43:59,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:43:59,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168095375] [2025-03-13 21:43:59,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:43:59,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:43:59,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:43:59,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:43:59,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:43:59,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:43:59,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 1358 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:43:59,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:43:59,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:43:59,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:00,678 INFO L124 PetriNetUnfolderBase]: 13503/18965 cut-off events. [2025-03-13 21:44:00,678 INFO L125 PetriNetUnfolderBase]: For 86241/86285 co-relation queries the response was YES. [2025-03-13 21:44:00,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68975 conditions, 18965 events. 13503/18965 cut-off events. For 86241/86285 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 108164 event pairs, 6819 based on Foata normal form. 1/18916 useless extension candidates. Maximal degree in co-relation 62460. Up to 13045 conditions per place. [2025-03-13 21:44:00,789 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 142 selfloop transitions, 20 changer transitions 16/182 dead transitions. [2025-03-13 21:44:00,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 182 transitions, 1886 flow [2025-03-13 21:44:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-03-13 21:44:00,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-03-13 21:44:00,790 INFO L175 Difference]: Start difference. First operand has 93 places, 134 transitions, 1358 flow. Second operand 5 states and 130 transitions. [2025-03-13 21:44:00,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 182 transitions, 1886 flow [2025-03-13 21:44:00,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 182 transitions, 1845 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-13 21:44:00,971 INFO L231 Difference]: Finished difference. Result has 97 places, 131 transitions, 1319 flow [2025-03-13 21:44:00,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1319, PETRI_PLACES=97, PETRI_TRANSITIONS=131} [2025-03-13 21:44:00,971 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2025-03-13 21:44:00,972 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 131 transitions, 1319 flow [2025-03-13 21:44:00,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:00,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:00,972 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:00,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-13 21:44:00,972 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)] === [2025-03-13 21:44:00,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1199538707, now seen corresponding path program 3 times [2025-03-13 21:44:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:00,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772471720] [2025-03-13 21:44:00,973 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:44:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:00,980 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-03-13 21:44:00,990 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 21:44:00,991 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:44:00,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:44:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772471720] [2025-03-13 21:44:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772471720] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:01,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:01,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658078024] [2025-03-13 21:44:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:01,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:01,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:01,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:01,074 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:01,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 131 transitions, 1319 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:01,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:01,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:01,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:02,326 INFO L124 PetriNetUnfolderBase]: 13546/19012 cut-off events. [2025-03-13 21:44:02,326 INFO L125 PetriNetUnfolderBase]: For 87756/87800 co-relation queries the response was YES. [2025-03-13 21:44:02,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69456 conditions, 19012 events. 13546/19012 cut-off events. For 87756/87800 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 108234 event pairs, 6657 based on Foata normal form. 1/18963 useless extension candidates. Maximal degree in co-relation 69370. Up to 13045 conditions per place. [2025-03-13 21:44:02,457 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 154 selfloop transitions, 26 changer transitions 13/197 dead transitions. [2025-03-13 21:44:02,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 197 transitions, 2060 flow [2025-03-13 21:44:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-03-13 21:44:02,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2025-03-13 21:44:02,458 INFO L175 Difference]: Start difference. First operand has 97 places, 131 transitions, 1319 flow. Second operand 5 states and 137 transitions. [2025-03-13 21:44:02,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 197 transitions, 2060 flow [2025-03-13 21:44:02,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 197 transitions, 2014 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-03-13 21:44:02,791 INFO L231 Difference]: Finished difference. Result has 98 places, 133 transitions, 1335 flow [2025-03-13 21:44:02,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1335, PETRI_PLACES=98, PETRI_TRANSITIONS=133} [2025-03-13 21:44:02,791 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2025-03-13 21:44:02,791 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 133 transitions, 1335 flow [2025-03-13 21:44:02,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:02,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:02,792 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:02,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-13 21:44:02,792 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)] === [2025-03-13 21:44:02,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1796142559, now seen corresponding path program 4 times [2025-03-13 21:44:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:02,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786002273] [2025-03-13 21:44:02,792 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:44:02,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:02,799 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-13 21:44:02,803 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 26 statements. [2025-03-13 21:44:02,803 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-13 21:44:02,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:44:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786002273] [2025-03-13 21:44:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786002273] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:02,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:02,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:02,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678059] [2025-03-13 21:44:02,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:02,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:02,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:02,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:02,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:02,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:02,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 133 transitions, 1335 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:02,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:02,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:02,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:04,359 INFO L124 PetriNetUnfolderBase]: 13307/18648 cut-off events. [2025-03-13 21:44:04,360 INFO L125 PetriNetUnfolderBase]: For 91777/91821 co-relation queries the response was YES. [2025-03-13 21:44:04,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69545 conditions, 18648 events. 13307/18648 cut-off events. For 91777/91821 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 105459 event pairs, 7164 based on Foata normal form. 1/18593 useless extension candidates. Maximal degree in co-relation 65221. Up to 14470 conditions per place. [2025-03-13 21:44:04,714 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 147 selfloop transitions, 10 changer transitions 18/179 dead transitions. [2025-03-13 21:44:04,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 179 transitions, 1832 flow [2025-03-13 21:44:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:04,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2025-03-13 21:44:04,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2025-03-13 21:44:04,715 INFO L175 Difference]: Start difference. First operand has 98 places, 133 transitions, 1335 flow. Second operand 5 states and 128 transitions. [2025-03-13 21:44:04,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 179 transitions, 1832 flow [2025-03-13 21:44:04,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1780 flow, removed 18 selfloop flow, removed 2 redundant places. [2025-03-13 21:44:04,945 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1221 flow [2025-03-13 21:44:04,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1221, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2025-03-13 21:44:04,946 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2025-03-13 21:44:04,946 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1221 flow [2025-03-13 21:44:04,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:04,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:04,947 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:04,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-13 21:44:04,947 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)] === [2025-03-13 21:44:04,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash -43167035, now seen corresponding path program 5 times [2025-03-13 21:44:04,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:04,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087429061] [2025-03-13 21:44:04,948 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:44:04,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:04,957 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-03-13 21:44:04,961 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 21:44:04,962 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:44:04,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:44:05,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:05,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087429061] [2025-03-13 21:44:05,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087429061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:05,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:05,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:05,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832834047] [2025-03-13 21:44:05,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:05,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:05,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:05,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:05,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:05,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1221 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:05,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:05,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:05,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:06,223 INFO L124 PetriNetUnfolderBase]: 13582/19130 cut-off events. [2025-03-13 21:44:06,223 INFO L125 PetriNetUnfolderBase]: For 88842/88842 co-relation queries the response was YES. [2025-03-13 21:44:06,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70806 conditions, 19130 events. 13582/19130 cut-off events. For 88842/88842 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 108994 event pairs, 4195 based on Foata normal form. 1/19097 useless extension candidates. Maximal degree in co-relation 70730. Up to 9493 conditions per place. [2025-03-13 21:44:06,334 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 171 selfloop transitions, 15 changer transitions 10/200 dead transitions. [2025-03-13 21:44:06,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 200 transitions, 2038 flow [2025-03-13 21:44:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-03-13 21:44:06,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-03-13 21:44:06,335 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1221 flow. Second operand 5 states and 133 transitions. [2025-03-13 21:44:06,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 200 transitions, 2038 flow [2025-03-13 21:44:06,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 200 transitions, 1996 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-03-13 21:44:06,583 INFO L231 Difference]: Finished difference. Result has 101 places, 136 transitions, 1332 flow [2025-03-13 21:44:06,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1332, PETRI_PLACES=101, PETRI_TRANSITIONS=136} [2025-03-13 21:44:06,584 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2025-03-13 21:44:06,584 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 136 transitions, 1332 flow [2025-03-13 21:44:06,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:06,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:06,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:06,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-13 21:44:06,584 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)] === [2025-03-13 21:44:06,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash 302164297, now seen corresponding path program 6 times [2025-03-13 21:44:06,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:06,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159627130] [2025-03-13 21:44:06,585 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:44:06,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:06,590 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 1 equivalence classes. [2025-03-13 21:44:06,595 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 21:44:06,596 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-13 21:44:06,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:44:06,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:06,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159627130] [2025-03-13 21:44:06,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159627130] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:06,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:06,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:06,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076107308] [2025-03-13 21:44:06,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:06,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:06,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:06,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:06,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:06,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:06,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 136 transitions, 1332 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:06,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:06,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:06,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:07,967 INFO L124 PetriNetUnfolderBase]: 13567/19044 cut-off events. [2025-03-13 21:44:07,967 INFO L125 PetriNetUnfolderBase]: For 98370/98414 co-relation queries the response was YES. [2025-03-13 21:44:08,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72231 conditions, 19044 events. 13567/19044 cut-off events. For 98370/98414 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 108127 event pairs, 7209 based on Foata normal form. 1/18989 useless extension candidates. Maximal degree in co-relation 52110. Up to 14470 conditions per place. [2025-03-13 21:44:08,119 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 165 selfloop transitions, 17 changer transitions 10/196 dead transitions. [2025-03-13 21:44:08,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 196 transitions, 1978 flow [2025-03-13 21:44:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-03-13 21:44:08,120 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2025-03-13 21:44:08,120 INFO L175 Difference]: Start difference. First operand has 101 places, 136 transitions, 1332 flow. Second operand 5 states and 134 transitions. [2025-03-13 21:44:08,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 196 transitions, 1978 flow [2025-03-13 21:44:08,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 196 transitions, 1961 flow, removed 7 selfloop flow, removed 1 redundant places. [2025-03-13 21:44:08,288 INFO L231 Difference]: Finished difference. Result has 106 places, 138 transitions, 1338 flow [2025-03-13 21:44:08,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1338, PETRI_PLACES=106, PETRI_TRANSITIONS=138} [2025-03-13 21:44:08,288 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2025-03-13 21:44:08,289 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 138 transitions, 1338 flow [2025-03-13 21:44:08,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:08,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:08,289 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:08,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-13 21:44:08,289 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)] === [2025-03-13 21:44:08,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:08,289 INFO L85 PathProgramCache]: Analyzing trace with hash 541716368, now seen corresponding path program 1 times [2025-03-13 21:44:08,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:08,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456403714] [2025-03-13 21:44:08,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:44:08,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:08,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 21:44:08,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 21:44:08,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:44:08,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:08,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:08,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456403714] [2025-03-13 21:44:08,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456403714] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:08,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:08,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:08,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466941720] [2025-03-13 21:44:08,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:08,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:08,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:08,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:08,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:08,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:08,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 138 transitions, 1338 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:08,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:08,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:08,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:10,058 INFO L124 PetriNetUnfolderBase]: 14297/20480 cut-off events. [2025-03-13 21:44:10,058 INFO L125 PetriNetUnfolderBase]: For 110544/110564 co-relation queries the response was YES. [2025-03-13 21:44:10,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77916 conditions, 20480 events. 14297/20480 cut-off events. For 110544/110564 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 125307 event pairs, 4069 based on Foata normal form. 1/20455 useless extension candidates. Maximal degree in co-relation 57755. Up to 9305 conditions per place. [2025-03-13 21:44:10,242 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 196 selfloop transitions, 18 changer transitions 3/221 dead transitions. [2025-03-13 21:44:10,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 221 transitions, 2374 flow [2025-03-13 21:44:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-03-13 21:44:10,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5673469387755102 [2025-03-13 21:44:10,244 INFO L175 Difference]: Start difference. First operand has 106 places, 138 transitions, 1338 flow. Second operand 5 states and 139 transitions. [2025-03-13 21:44:10,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 221 transitions, 2374 flow [2025-03-13 21:44:10,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 221 transitions, 2316 flow, removed 21 selfloop flow, removed 1 redundant places. [2025-03-13 21:44:10,540 INFO L231 Difference]: Finished difference. Result has 110 places, 149 transitions, 1575 flow [2025-03-13 21:44:10,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1575, PETRI_PLACES=110, PETRI_TRANSITIONS=149} [2025-03-13 21:44:10,540 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2025-03-13 21:44:10,540 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 149 transitions, 1575 flow [2025-03-13 21:44:10,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:10,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:10,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:10,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-13 21:44:10,541 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)] === [2025-03-13 21:44:10,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:10,541 INFO L85 PathProgramCache]: Analyzing trace with hash -403905998, now seen corresponding path program 2 times [2025-03-13 21:44:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:10,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856376135] [2025-03-13 21:44:10,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:44:10,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:10,548 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:10,553 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-03-13 21:44:10,553 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:44:10,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:10,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:10,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856376135] [2025-03-13 21:44:10,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856376135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:10,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:10,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:10,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744915686] [2025-03-13 21:44:10,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:10,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:10,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:10,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:10,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:10,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 149 transitions, 1575 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:10,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:10,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:10,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:11,981 INFO L124 PetriNetUnfolderBase]: 14272/20175 cut-off events. [2025-03-13 21:44:11,981 INFO L125 PetriNetUnfolderBase]: For 117159/117203 co-relation queries the response was YES. [2025-03-13 21:44:12,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78769 conditions, 20175 events. 14272/20175 cut-off events. For 117159/117203 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 117296 event pairs, 7217 based on Foata normal form. 1/20120 useless extension candidates. Maximal degree in co-relation 74111. Up to 14470 conditions per place. [2025-03-13 21:44:12,111 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 181 selfloop transitions, 26 changer transitions 3/214 dead transitions. [2025-03-13 21:44:12,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 214 transitions, 2352 flow [2025-03-13 21:44:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2025-03-13 21:44:12,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5551020408163265 [2025-03-13 21:44:12,112 INFO L175 Difference]: Start difference. First operand has 110 places, 149 transitions, 1575 flow. Second operand 5 states and 136 transitions. [2025-03-13 21:44:12,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 214 transitions, 2352 flow [2025-03-13 21:44:12,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 214 transitions, 2322 flow, removed 11 selfloop flow, removed 1 redundant places. [2025-03-13 21:44:12,341 INFO L231 Difference]: Finished difference. Result has 116 places, 153 transitions, 1708 flow [2025-03-13 21:44:12,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1708, PETRI_PLACES=116, PETRI_TRANSITIONS=153} [2025-03-13 21:44:12,342 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2025-03-13 21:44:12,342 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 153 transitions, 1708 flow [2025-03-13 21:44:12,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:12,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:12,342 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] [2025-03-13 21:44:12,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-13 21:44:12,342 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)] === [2025-03-13 21:44:12,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:12,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1780616150, now seen corresponding path program 3 times [2025-03-13 21:44:12,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:12,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721615477] [2025-03-13 21:44:12,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:44:12,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:12,348 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:12,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-03-13 21:44:12,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:44:12,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:12,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:12,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721615477] [2025-03-13 21:44:12,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721615477] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:12,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:12,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:12,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070697154] [2025-03-13 21:44:12,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:12,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:12,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:12,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:12,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:12,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:12,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 153 transitions, 1708 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:12,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:12,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:12,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:14,745 INFO L124 PetriNetUnfolderBase]: 18182/26245 cut-off events. [2025-03-13 21:44:14,745 INFO L125 PetriNetUnfolderBase]: For 155952/155992 co-relation queries the response was YES. [2025-03-13 21:44:15,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101617 conditions, 26245 events. 18182/26245 cut-off events. For 155952/155992 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 168332 event pairs, 2716 based on Foata normal form. 1/26240 useless extension candidates. Maximal degree in co-relation 98017. Up to 8197 conditions per place. [2025-03-13 21:44:15,129 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 231 selfloop transitions, 45 changer transitions 4/284 dead transitions. [2025-03-13 21:44:15,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 284 transitions, 3299 flow [2025-03-13 21:44:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:44:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:44:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2025-03-13 21:44:15,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2025-03-13 21:44:15,130 INFO L175 Difference]: Start difference. First operand has 116 places, 153 transitions, 1708 flow. Second operand 6 states and 177 transitions. [2025-03-13 21:44:15,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 284 transitions, 3299 flow [2025-03-13 21:44:15,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 284 transitions, 3265 flow, removed 7 selfloop flow, removed 1 redundant places. [2025-03-13 21:44:15,549 INFO L231 Difference]: Finished difference. Result has 124 places, 174 transitions, 2124 flow [2025-03-13 21:44:15,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2124, PETRI_PLACES=124, PETRI_TRANSITIONS=174} [2025-03-13 21:44:15,550 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2025-03-13 21:44:15,550 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 174 transitions, 2124 flow [2025-03-13 21:44:15,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:15,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:15,550 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:15,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-13 21:44:15,550 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)] === [2025-03-13 21:44:15,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:15,551 INFO L85 PathProgramCache]: Analyzing trace with hash 201578646, now seen corresponding path program 4 times [2025-03-13 21:44:15,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:15,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789053299] [2025-03-13 21:44:15,551 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:44:15,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:15,559 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:15,567 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-03-13 21:44:15,567 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-13 21:44:15,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:15,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789053299] [2025-03-13 21:44:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789053299] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:15,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:15,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:15,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845987717] [2025-03-13 21:44:15,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:15,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:15,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:15,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:15,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:15,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:15,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 174 transitions, 2124 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:15,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:15,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:15,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:17,772 INFO L124 PetriNetUnfolderBase]: 18547/26703 cut-off events. [2025-03-13 21:44:17,772 INFO L125 PetriNetUnfolderBase]: For 188328/188328 co-relation queries the response was YES. [2025-03-13 21:44:17,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110121 conditions, 26703 events. 18547/26703 cut-off events. For 188328/188328 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 169199 event pairs, 3120 based on Foata normal form. 1/26696 useless extension candidates. Maximal degree in co-relation 106522. Up to 8990 conditions per place. [2025-03-13 21:44:18,066 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 206 selfloop transitions, 76 changer transitions 4/290 dead transitions. [2025-03-13 21:44:18,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 290 transitions, 3625 flow [2025-03-13 21:44:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:44:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:44:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2025-03-13 21:44:18,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5884353741496599 [2025-03-13 21:44:18,067 INFO L175 Difference]: Start difference. First operand has 124 places, 174 transitions, 2124 flow. Second operand 6 states and 173 transitions. [2025-03-13 21:44:18,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 290 transitions, 3625 flow [2025-03-13 21:44:18,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 290 transitions, 3569 flow, removed 28 selfloop flow, removed 0 redundant places. [2025-03-13 21:44:18,771 INFO L231 Difference]: Finished difference. Result has 132 places, 188 transitions, 2522 flow [2025-03-13 21:44:18,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2522, PETRI_PLACES=132, PETRI_TRANSITIONS=188} [2025-03-13 21:44:18,771 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2025-03-13 21:44:18,771 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 188 transitions, 2522 flow [2025-03-13 21:44:18,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:18,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:18,771 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:18,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-13 21:44:18,771 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)] === [2025-03-13 21:44:18,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1379663730, now seen corresponding path program 5 times [2025-03-13 21:44:18,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:18,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581769935] [2025-03-13 21:44:18,772 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:44:18,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:18,778 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:18,785 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 21:44:18,785 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:44:18,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:18,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:18,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581769935] [2025-03-13 21:44:18,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581769935] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:18,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811882785] [2025-03-13 21:44:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:18,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:18,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:18,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:18,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:18,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 188 transitions, 2522 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:18,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:18,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:18,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:20,821 INFO L124 PetriNetUnfolderBase]: 18382/26394 cut-off events. [2025-03-13 21:44:20,821 INFO L125 PetriNetUnfolderBase]: For 202612/202612 co-relation queries the response was YES. [2025-03-13 21:44:21,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111213 conditions, 26394 events. 18382/26394 cut-off events. For 202612/202612 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 166620 event pairs, 8923 based on Foata normal form. 1/26375 useless extension candidates. Maximal degree in co-relation 109148. Up to 20279 conditions per place. [2025-03-13 21:44:21,209 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 194 selfloop transitions, 30 changer transitions 8/236 dead transitions. [2025-03-13 21:44:21,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 236 transitions, 3183 flow [2025-03-13 21:44:21,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:21,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-03-13 21:44:21,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-03-13 21:44:21,210 INFO L175 Difference]: Start difference. First operand has 132 places, 188 transitions, 2522 flow. Second operand 5 states and 131 transitions. [2025-03-13 21:44:21,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 236 transitions, 3183 flow [2025-03-13 21:44:21,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 236 transitions, 3123 flow, removed 28 selfloop flow, removed 1 redundant places. [2025-03-13 21:44:21,912 INFO L231 Difference]: Finished difference. Result has 136 places, 183 transitions, 2462 flow [2025-03-13 21:44:21,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2464, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2462, PETRI_PLACES=136, PETRI_TRANSITIONS=183} [2025-03-13 21:44:21,912 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2025-03-13 21:44:21,912 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 183 transitions, 2462 flow [2025-03-13 21:44:21,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:21,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:21,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:21,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-13 21:44:21,912 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)] === [2025-03-13 21:44:21,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1893243434, now seen corresponding path program 6 times [2025-03-13 21:44:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:21,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771525718] [2025-03-13 21:44:21,913 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:44:21,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:21,918 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:21,921 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-03-13 21:44:21,922 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-13 21:44:21,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:21,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:21,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771525718] [2025-03-13 21:44:21,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771525718] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:21,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:21,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:21,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686254374] [2025-03-13 21:44:21,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:21,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:21,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:21,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:21,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:21,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 183 transitions, 2462 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:21,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:21,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:21,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:23,827 INFO L124 PetriNetUnfolderBase]: 18213/26121 cut-off events. [2025-03-13 21:44:23,827 INFO L125 PetriNetUnfolderBase]: For 200553/200553 co-relation queries the response was YES. [2025-03-13 21:44:24,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109417 conditions, 26121 events. 18213/26121 cut-off events. For 200553/200553 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 163078 event pairs, 6148 based on Foata normal form. 1/26102 useless extension candidates. Maximal degree in co-relation 107387. Up to 13773 conditions per place. [2025-03-13 21:44:24,216 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 157 selfloop transitions, 63 changer transitions 9/233 dead transitions. [2025-03-13 21:44:24,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 233 transitions, 3162 flow [2025-03-13 21:44:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:24,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-03-13 21:44:24,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-03-13 21:44:24,217 INFO L175 Difference]: Start difference. First operand has 136 places, 183 transitions, 2462 flow. Second operand 5 states and 131 transitions. [2025-03-13 21:44:24,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 233 transitions, 3162 flow [2025-03-13 21:44:24,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 233 transitions, 3079 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-03-13 21:44:24,863 INFO L231 Difference]: Finished difference. Result has 137 places, 177 transitions, 2422 flow [2025-03-13 21:44:24,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2422, PETRI_PLACES=137, PETRI_TRANSITIONS=177} [2025-03-13 21:44:24,863 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2025-03-13 21:44:24,863 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 177 transitions, 2422 flow [2025-03-13 21:44:24,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:24,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:24,863 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:24,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-13 21:44:24,863 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)] === [2025-03-13 21:44:24,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:24,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1594640865, now seen corresponding path program 1 times [2025-03-13 21:44:24,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:24,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592359091] [2025-03-13 21:44:24,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:44:24,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:24,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 21:44:24,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 21:44:24,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:44:24,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:24,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:24,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592359091] [2025-03-13 21:44:24,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592359091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:24,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:24,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:24,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186267986] [2025-03-13 21:44:24,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:24,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:24,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:24,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:24,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:24,928 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:24,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 177 transitions, 2422 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:24,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:24,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:24,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:27,091 INFO L124 PetriNetUnfolderBase]: 19171/27558 cut-off events. [2025-03-13 21:44:27,091 INFO L125 PetriNetUnfolderBase]: For 219349/219349 co-relation queries the response was YES. [2025-03-13 21:44:27,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115789 conditions, 27558 events. 19171/27558 cut-off events. For 219349/219349 co-relation queries the response was YES. Maximal size of possible extension queue 1400. Compared 175441 event pairs, 8345 based on Foata normal form. 1/27543 useless extension candidates. Maximal degree in co-relation 114032. Up to 18928 conditions per place. [2025-03-13 21:44:27,451 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 221 selfloop transitions, 18 changer transitions 3/246 dead transitions. [2025-03-13 21:44:27,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 246 transitions, 3343 flow [2025-03-13 21:44:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2025-03-13 21:44:27,452 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2025-03-13 21:44:27,452 INFO L175 Difference]: Start difference. First operand has 137 places, 177 transitions, 2422 flow. Second operand 5 states and 138 transitions. [2025-03-13 21:44:27,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 246 transitions, 3343 flow [2025-03-13 21:44:28,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 246 transitions, 3208 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-03-13 21:44:28,139 INFO L231 Difference]: Finished difference. Result has 141 places, 181 transitions, 2449 flow [2025-03-13 21:44:28,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2449, PETRI_PLACES=141, PETRI_TRANSITIONS=181} [2025-03-13 21:44:28,140 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2025-03-13 21:44:28,140 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 181 transitions, 2449 flow [2025-03-13 21:44:28,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:28,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:28,140 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:28,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-13 21:44:28,141 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)] === [2025-03-13 21:44:28,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1178492121, now seen corresponding path program 2 times [2025-03-13 21:44:28,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:28,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47564380] [2025-03-13 21:44:28,141 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:44:28,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:28,146 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:28,150 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-03-13 21:44:28,150 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:44:28,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:28,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:28,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47564380] [2025-03-13 21:44:28,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47564380] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:28,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:28,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:28,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392546722] [2025-03-13 21:44:28,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:28,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:28,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:28,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:28,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:28,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:28,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 181 transitions, 2449 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:28,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:28,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:28,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:30,192 INFO L124 PetriNetUnfolderBase]: 19009/27358 cut-off events. [2025-03-13 21:44:30,192 INFO L125 PetriNetUnfolderBase]: For 213984/213984 co-relation queries the response was YES. [2025-03-13 21:44:30,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113988 conditions, 27358 events. 19009/27358 cut-off events. For 213984/213984 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 173927 event pairs, 5445 based on Foata normal form. 1/27351 useless extension candidates. Maximal degree in co-relation 110718. Up to 13877 conditions per place. [2025-03-13 21:44:30,685 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 222 selfloop transitions, 23 changer transitions 3/252 dead transitions. [2025-03-13 21:44:30,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 252 transitions, 3505 flow [2025-03-13 21:44:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-03-13 21:44:30,686 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2025-03-13 21:44:30,686 INFO L175 Difference]: Start difference. First operand has 141 places, 181 transitions, 2449 flow. Second operand 5 states and 137 transitions. [2025-03-13 21:44:30,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 252 transitions, 3505 flow [2025-03-13 21:44:31,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 252 transitions, 3483 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-13 21:44:31,500 INFO L231 Difference]: Finished difference. Result has 146 places, 190 transitions, 2733 flow [2025-03-13 21:44:31,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2733, PETRI_PLACES=146, PETRI_TRANSITIONS=190} [2025-03-13 21:44:31,500 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2025-03-13 21:44:31,500 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 190 transitions, 2733 flow [2025-03-13 21:44:31,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:31,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:31,501 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] [2025-03-13 21:44:31,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-13 21:44:31,501 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)] === [2025-03-13 21:44:31,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2071735079, now seen corresponding path program 3 times [2025-03-13 21:44:31,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:31,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127963970] [2025-03-13 21:44:31,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:44:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:31,509 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:31,514 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-03-13 21:44:31,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:44:31,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:31,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:31,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127963970] [2025-03-13 21:44:31,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127963970] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:31,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:31,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:31,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899309900] [2025-03-13 21:44:31,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:31,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:31,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:31,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:31,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:31,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:31,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 190 transitions, 2733 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:31,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:31,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:31,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:33,653 INFO L124 PetriNetUnfolderBase]: 18847/27085 cut-off events. [2025-03-13 21:44:33,653 INFO L125 PetriNetUnfolderBase]: For 223208/223208 co-relation queries the response was YES. [2025-03-13 21:44:34,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114968 conditions, 27085 events. 18847/27085 cut-off events. For 223208/223208 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 171773 event pairs, 8655 based on Foata normal form. 1/27070 useless extension candidates. Maximal degree in co-relation 111696. Up to 18928 conditions per place. [2025-03-13 21:44:34,142 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 199 selfloop transitions, 30 changer transitions 8/241 dead transitions. [2025-03-13 21:44:34,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 241 transitions, 3417 flow [2025-03-13 21:44:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-03-13 21:44:34,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-03-13 21:44:34,143 INFO L175 Difference]: Start difference. First operand has 146 places, 190 transitions, 2733 flow. Second operand 5 states and 133 transitions. [2025-03-13 21:44:34,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 241 transitions, 3417 flow [2025-03-13 21:44:34,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 241 transitions, 3369 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-03-13 21:44:34,947 INFO L231 Difference]: Finished difference. Result has 149 places, 185 transitions, 2688 flow [2025-03-13 21:44:34,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2687, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2688, PETRI_PLACES=149, PETRI_TRANSITIONS=185} [2025-03-13 21:44:34,947 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 106 predicate places. [2025-03-13 21:44:34,947 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 185 transitions, 2688 flow [2025-03-13 21:44:34,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:34,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:34,947 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:34,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-13 21:44:34,947 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)] === [2025-03-13 21:44:34,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash 373692403, now seen corresponding path program 4 times [2025-03-13 21:44:34,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:34,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689255215] [2025-03-13 21:44:34,948 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:44:34,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:34,952 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:34,954 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-03-13 21:44:34,954 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-13 21:44:34,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:34,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:34,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689255215] [2025-03-13 21:44:34,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689255215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:34,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:34,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:34,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499908913] [2025-03-13 21:44:34,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:34,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:34,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:34,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:34,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:34,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:34,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 185 transitions, 2688 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:34,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:34,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:34,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:37,789 INFO L124 PetriNetUnfolderBase]: 22622/32641 cut-off events. [2025-03-13 21:44:37,789 INFO L125 PetriNetUnfolderBase]: For 247678/247678 co-relation queries the response was YES. [2025-03-13 21:44:38,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136466 conditions, 32641 events. 22622/32641 cut-off events. For 247678/247678 co-relation queries the response was YES. Maximal size of possible extension queue 1639. Compared 213770 event pairs, 3691 based on Foata normal form. 1/32636 useless extension candidates. Maximal degree in co-relation 133800. Up to 11200 conditions per place. [2025-03-13 21:44:38,150 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 224 selfloop transitions, 62 changer transitions 4/294 dead transitions. [2025-03-13 21:44:38,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 294 transitions, 4039 flow [2025-03-13 21:44:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:44:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:44:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2025-03-13 21:44:38,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2025-03-13 21:44:38,152 INFO L175 Difference]: Start difference. First operand has 149 places, 185 transitions, 2688 flow. Second operand 6 states and 177 transitions. [2025-03-13 21:44:38,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 294 transitions, 4039 flow [2025-03-13 21:44:38,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 294 transitions, 3926 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-13 21:44:38,882 INFO L231 Difference]: Finished difference. Result has 153 places, 200 transitions, 3096 flow [2025-03-13 21:44:38,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3096, PETRI_PLACES=153, PETRI_TRANSITIONS=200} [2025-03-13 21:44:38,883 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2025-03-13 21:44:38,883 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 200 transitions, 3096 flow [2025-03-13 21:44:38,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:38,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:38,883 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:38,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-13 21:44:38,883 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)] === [2025-03-13 21:44:38,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1672547207, now seen corresponding path program 5 times [2025-03-13 21:44:38,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:38,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821904636] [2025-03-13 21:44:38,883 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:44:38,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:38,888 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:38,892 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 21:44:38,892 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:44:38,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:38,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821904636] [2025-03-13 21:44:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821904636] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:38,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:38,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:38,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870111629] [2025-03-13 21:44:38,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:38,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:38,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:38,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:38,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:38,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:38,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 200 transitions, 3096 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:38,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:38,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:38,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:41,440 INFO L124 PetriNetUnfolderBase]: 22440/32237 cut-off events. [2025-03-13 21:44:41,440 INFO L125 PetriNetUnfolderBase]: For 287261/287261 co-relation queries the response was YES. [2025-03-13 21:44:41,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141370 conditions, 32237 events. 22440/32237 cut-off events. For 287261/287261 co-relation queries the response was YES. Maximal size of possible extension queue 1621. Compared 208101 event pairs, 8510 based on Foata normal form. 1/32222 useless extension candidates. Maximal degree in co-relation 136740. Up to 18752 conditions per place. [2025-03-13 21:44:41,916 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 167 selfloop transitions, 75 changer transitions 8/254 dead transitions. [2025-03-13 21:44:41,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 254 transitions, 3883 flow [2025-03-13 21:44:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-03-13 21:44:41,917 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-03-13 21:44:41,917 INFO L175 Difference]: Start difference. First operand has 153 places, 200 transitions, 3096 flow. Second operand 5 states and 133 transitions. [2025-03-13 21:44:41,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 254 transitions, 3883 flow [2025-03-13 21:44:43,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 254 transitions, 3845 flow, removed 19 selfloop flow, removed 0 redundant places. [2025-03-13 21:44:43,679 INFO L231 Difference]: Finished difference. Result has 158 places, 196 transitions, 3152 flow [2025-03-13 21:44:43,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3062, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3152, PETRI_PLACES=158, PETRI_TRANSITIONS=196} [2025-03-13 21:44:43,680 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 115 predicate places. [2025-03-13 21:44:43,680 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 196 transitions, 3152 flow [2025-03-13 21:44:43,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:43,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:43,680 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:44:43,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-13 21:44:43,680 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)] === [2025-03-13 21:44:43,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash -625225577, now seen corresponding path program 6 times [2025-03-13 21:44:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:43,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427919615] [2025-03-13 21:44:43,681 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:44:43,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:43,685 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 2 equivalence classes. [2025-03-13 21:44:43,688 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-03-13 21:44:43,688 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-13 21:44:43,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:43,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:43,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427919615] [2025-03-13 21:44:43,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427919615] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:43,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:43,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:43,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018172451] [2025-03-13 21:44:43,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:43,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:43,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:43,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:43,733 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:43,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 196 transitions, 3152 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:43,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:43,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:43,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:47,105 INFO L124 PetriNetUnfolderBase]: 22222/31968 cut-off events. [2025-03-13 21:44:47,105 INFO L125 PetriNetUnfolderBase]: For 299081/299081 co-relation queries the response was YES. [2025-03-13 21:44:47,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141395 conditions, 31968 events. 22222/31968 cut-off events. For 299081/299081 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 206987 event pairs, 4941 based on Foata normal form. 1/31955 useless extension candidates. Maximal degree in co-relation 138436. Up to 12541 conditions per place. [2025-03-13 21:44:47,389 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 198 selfloop transitions, 86 changer transitions 4/292 dead transitions. [2025-03-13 21:44:47,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 292 transitions, 4306 flow [2025-03-13 21:44:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:44:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:44:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2025-03-13 21:44:47,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2025-03-13 21:44:47,390 INFO L175 Difference]: Start difference. First operand has 158 places, 196 transitions, 3152 flow. Second operand 6 states and 175 transitions. [2025-03-13 21:44:47,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 292 transitions, 4306 flow [2025-03-13 21:44:48,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 292 transitions, 4159 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-13 21:44:48,253 INFO L231 Difference]: Finished difference. Result has 162 places, 195 transitions, 3224 flow [2025-03-13 21:44:48,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3011, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3224, PETRI_PLACES=162, PETRI_TRANSITIONS=195} [2025-03-13 21:44:48,253 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2025-03-13 21:44:48,253 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 195 transitions, 3224 flow [2025-03-13 21:44:48,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-13 21:44:48,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:48,253 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] [2025-03-13 21:44:48,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-13 21:44:48,254 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)] === [2025-03-13 21:44:48,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1682747250, now seen corresponding path program 1 times [2025-03-13 21:44:48,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:48,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182034862] [2025-03-13 21:44:48,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:44:48,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:48,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-13 21:44:48,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-13 21:44:48,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:44:48,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:48,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:48,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182034862] [2025-03-13 21:44:48,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182034862] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:48,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:48,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:44:48,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896843683] [2025-03-13 21:44:48,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:48,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:44:48,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:48,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:44:48,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:44:48,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:48,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 195 transitions, 3224 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-13 21:44:48,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:48,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:48,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:51,416 INFO L124 PetriNetUnfolderBase]: 22040/31734 cut-off events. [2025-03-13 21:44:51,416 INFO L125 PetriNetUnfolderBase]: For 316208/316208 co-relation queries the response was YES. [2025-03-13 21:44:51,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141999 conditions, 31734 events. 22040/31734 cut-off events. For 316208/316208 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 206205 event pairs, 7528 based on Foata normal form. 1/31721 useless extension candidates. Maximal degree in co-relation 139384. Up to 16944 conditions per place. [2025-03-13 21:44:51,906 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 209 selfloop transitions, 18 changer transitions 24/255 dead transitions. [2025-03-13 21:44:51,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 255 transitions, 4017 flow [2025-03-13 21:44:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:44:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:44:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2025-03-13 21:44:51,907 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2025-03-13 21:44:51,907 INFO L175 Difference]: Start difference. First operand has 162 places, 195 transitions, 3224 flow. Second operand 5 states and 138 transitions. [2025-03-13 21:44:51,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 255 transitions, 4017 flow [2025-03-13 21:44:53,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 255 transitions, 3900 flow, removed 22 selfloop flow, removed 7 redundant places. [2025-03-13 21:44:53,375 INFO L231 Difference]: Finished difference. Result has 160 places, 190 transitions, 3027 flow [2025-03-13 21:44:53,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3027, PETRI_PLACES=160, PETRI_TRANSITIONS=190} [2025-03-13 21:44:53,375 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2025-03-13 21:44:53,375 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 190 transitions, 3027 flow [2025-03-13 21:44:53,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-13 21:44:53,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:53,376 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] [2025-03-13 21:44:53,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-13 21:44:53,376 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)] === [2025-03-13 21:44:53,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2130565790, now seen corresponding path program 2 times [2025-03-13 21:44:53,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51207607] [2025-03-13 21:44:53,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:44:53,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:53,381 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-03-13 21:44:53,384 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 29 statements. [2025-03-13 21:44:53,384 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:44:53,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51207607] [2025-03-13 21:44:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51207607] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:53,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:53,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:44:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562512978] [2025-03-13 21:44:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:53,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:44:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:53,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:44:53,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:44:53,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:53,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 190 transitions, 3027 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:53,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:53,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:53,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:44:56,263 INFO L124 PetriNetUnfolderBase]: 21363/30647 cut-off events. [2025-03-13 21:44:56,263 INFO L125 PetriNetUnfolderBase]: For 300345/300345 co-relation queries the response was YES. [2025-03-13 21:44:56,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134668 conditions, 30647 events. 21363/30647 cut-off events. For 300345/300345 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 195633 event pairs, 4683 based on Foata normal form. 240/30879 useless extension candidates. Maximal degree in co-relation 134532. Up to 23082 conditions per place. [2025-03-13 21:44:56,813 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 200 selfloop transitions, 25 changer transitions 0/229 dead transitions. [2025-03-13 21:44:56,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 229 transitions, 3685 flow [2025-03-13 21:44:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:44:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:44:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-03-13 21:44:56,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-03-13 21:44:56,814 INFO L175 Difference]: Start difference. First operand has 160 places, 190 transitions, 3027 flow. Second operand 4 states and 112 transitions. [2025-03-13 21:44:56,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 229 transitions, 3685 flow [2025-03-13 21:44:58,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 229 transitions, 3612 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-13 21:44:58,057 INFO L231 Difference]: Finished difference. Result has 158 places, 193 transitions, 3112 flow [2025-03-13 21:44:58,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3112, PETRI_PLACES=158, PETRI_TRANSITIONS=193} [2025-03-13 21:44:58,062 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 115 predicate places. [2025-03-13 21:44:58,062 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 193 transitions, 3112 flow [2025-03-13 21:44:58,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:44:58,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:44:58,063 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] [2025-03-13 21:44:58,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-13 21:44:58,063 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)] === [2025-03-13 21:44:58,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:44:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1361801966, now seen corresponding path program 3 times [2025-03-13 21:44:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:44:58,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549734773] [2025-03-13 21:44:58,064 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:44:58,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:44:58,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 2 equivalence classes. [2025-03-13 21:44:58,076 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 29 statements. [2025-03-13 21:44:58,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:44:58,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:44:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 21:44:58,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:44:58,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549734773] [2025-03-13 21:44:58,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549734773] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:44:58,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:44:58,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:44:58,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800946223] [2025-03-13 21:44:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:44:58,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:44:58,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:44:58,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:44:58,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:44:58,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-13 21:44:58,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 193 transitions, 3112 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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) [2025-03-13 21:44:58,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:44:58,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-13 21:44:58,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand