./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:07:22,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:07:22,947 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:07:22,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:07:22,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:07:22,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:07:22,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:07:22,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:07:22,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:07:22,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:07:22,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:07:22,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:07:22,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:07:22,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:07:22,990 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:07:22,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:07:22,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:07:22,992 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:07:22,992 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:07:22,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:07:22,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:07:22,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:07:22,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:07:22,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:07:22,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:07:22,995 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:07:22,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:07:22,995 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:07:22,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:07:22,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:07:22,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:07:22,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:07:22,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:07:22,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:07:22,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:07:22,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:07:22,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:07:22,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:07:22,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:07:23,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:07:23,000 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:07:23,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:07:23,002 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-10-13 07:07:23,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:07:23,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:07:23,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:07:23,288 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:07:23,289 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:07:23,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-13 07:07:24,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:07:24,953 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:07:24,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-13 07:07:24,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1caf43875/8881b8df80944db8ae6b301732ad5bf4/FLAG9eef05496 [2024-10-13 07:07:24,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1caf43875/8881b8df80944db8ae6b301732ad5bf4 [2024-10-13 07:07:24,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:07:24,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:07:24,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:07:24,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:07:24,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:07:24,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:24" (1/1) ... [2024-10-13 07:07:24,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277c3ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:24, skipping insertion in model container [2024-10-13 07:07:24,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:24" (1/1) ... [2024-10-13 07:07:25,020 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:07:25,249 WARN L248 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-name-comparator-subst.wvr.c[4875,4888] [2024-10-13 07:07:25,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:07:25,273 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:07:25,300 WARN L248 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-name-comparator-subst.wvr.c[4875,4888] [2024-10-13 07:07:25,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:07:25,324 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:07:25,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25 WrapperNode [2024-10-13 07:07:25,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:07:25,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:07:25,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:07:25,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:07:25,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,381 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 304 [2024-10-13 07:07:25,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:07:25,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:07:25,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:07:25,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:07:25,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,421 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-13 07:07:25,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:07:25,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:07:25,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:07:25,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:07:25,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2024-10-13 07:07:25,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:07:25,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:25,481 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) [2024-10-13 07:07:25,484 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 [2024-10-13 07:07:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:07:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:07:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:07:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:07:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:07:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:07:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:07:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:07:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:07:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 07:07:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 07:07:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 07:07:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:07:25,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:07:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 07:07:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 07:07:25,531 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:07:25,636 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:07:25,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:07:26,094 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:07:26,095 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:07:26,558 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:07:26,558 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 07:07:26,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:26 BoogieIcfgContainer [2024-10-13 07:07:26,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:07:26,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:07:26,562 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:07:26,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:07:26,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:07:24" (1/3) ... [2024-10-13 07:07:26,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efa834c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:26, skipping insertion in model container [2024-10-13 07:07:26,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (2/3) ... [2024-10-13 07:07:26,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efa834c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:26, skipping insertion in model container [2024-10-13 07:07:26,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:26" (3/3) ... [2024-10-13 07:07:26,569 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-10-13 07:07:26,586 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:07:26,587 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:07:26,587 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:07:26,654 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 07:07:26,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 93 flow [2024-10-13 07:07:26,729 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2024-10-13 07:07:26,730 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:07:26,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 7/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-13 07:07:26,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 93 flow [2024-10-13 07:07:26,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 82 flow [2024-10-13 07:07:26,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:07:26,763 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;@7938bb3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:07:26,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 07:07:26,778 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:07:26,779 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2024-10-13 07:07:26,779 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:07:26,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:26,780 INFO L204 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] [2024-10-13 07:07:26,781 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)] === [2024-10-13 07:07:26,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash -447705035, now seen corresponding path program 1 times [2024-10-13 07:07:26,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:26,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939502520] [2024-10-13 07:07:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:26,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:07:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939502520] [2024-10-13 07:07:27,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939502520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:27,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:27,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:07:27,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613971567] [2024-10-13 07:07:27,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:27,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 07:07:27,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 07:07:27,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 07:07:27,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:27,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-13 07:07:27,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:27,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:27,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:27,515 INFO L124 PetriNetUnfolderBase]: 792/1137 cut-off events. [2024-10-13 07:07:27,515 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-10-13 07:07:27,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1137 events. 792/1137 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3706 event pairs, 608 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 2150. Up to 1137 conditions per place. [2024-10-13 07:07:27,528 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 28 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2024-10-13 07:07:27,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 132 flow [2024-10-13 07:07:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 07:07:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 07:07:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-10-13 07:07:27,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-13 07:07:27,545 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 82 flow. Second operand 2 states and 39 transitions. [2024-10-13 07:07:27,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 132 flow [2024-10-13 07:07:27,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 07:07:27,553 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 64 flow [2024-10-13 07:07:27,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2024-10-13 07:07:27,561 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2024-10-13 07:07:27,561 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 64 flow [2024-10-13 07:07:27,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-13 07:07:27,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:27,562 INFO L204 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] [2024-10-13 07:07:27,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:07:27,562 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)] === [2024-10-13 07:07:27,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1234612696, now seen corresponding path program 1 times [2024-10-13 07:07:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:27,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923997690] [2024-10-13 07:07:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:27,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:07:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:27,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923997690] [2024-10-13 07:07:27,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923997690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:07:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115593095] [2024-10-13 07:07:27,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:27,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:07:27,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:27,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:07:27,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:07:27,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:27,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-13 07:07:27,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:27,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:27,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:28,034 INFO L124 PetriNetUnfolderBase]: 792/1138 cut-off events. [2024-10-13 07:07:28,035 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 07:07:28,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1138 events. 792/1138 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3700 event pairs, 608 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 2306. Up to 1137 conditions per place. [2024-10-13 07:07:28,046 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-10-13 07:07:28,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 124 flow [2024-10-13 07:07:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:07:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:07:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-13 07:07:28,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-10-13 07:07:28,049 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 64 flow. Second operand 3 states and 42 transitions. [2024-10-13 07:07:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 124 flow [2024-10-13 07:07:28,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:07:28,053 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 76 flow [2024-10-13 07:07:28,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-10-13 07:07:28,055 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2024-10-13 07:07:28,055 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 76 flow [2024-10-13 07:07:28,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-13 07:07:28,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:28,056 INFO L204 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] [2024-10-13 07:07:28,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:07:28,056 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)] === [2024-10-13 07:07:28,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 321585607, now seen corresponding path program 1 times [2024-10-13 07:07:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:28,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438063632] [2024-10-13 07:07:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:28,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:07:28,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438063632] [2024-10-13 07:07:28,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438063632] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:28,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615798389] [2024-10-13 07:07:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:28,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:28,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:07:28,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:07:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:28,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 07:07:28,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:07:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:07:28,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:07:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:07:28,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615798389] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:07:28,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:07:28,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-13 07:07:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592901038] [2024-10-13 07:07:28,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:07:28,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:07:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:28,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:07:28,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:07:28,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:28,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-10-13 07:07:28,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:28,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:28,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:28,693 INFO L124 PetriNetUnfolderBase]: 792/1140 cut-off events. [2024-10-13 07:07:28,694 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 07:07:28,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1140 events. 792/1140 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3700 event pairs, 608 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 2317. Up to 1137 conditions per place. [2024-10-13 07:07:28,700 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-10-13 07:07:28,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 146 flow [2024-10-13 07:07:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:07:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:07:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2024-10-13 07:07:28,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-10-13 07:07:28,704 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 76 flow. Second operand 5 states and 53 transitions. [2024-10-13 07:07:28,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 146 flow [2024-10-13 07:07:28,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 07:07:28,708 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 98 flow [2024-10-13 07:07:28,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-10-13 07:07:28,708 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-10-13 07:07:28,709 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 98 flow [2024-10-13 07:07:28,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-10-13 07:07:28,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:28,709 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:28,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 07:07:28,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:28,910 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)] === [2024-10-13 07:07:28,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash 836812775, now seen corresponding path program 2 times [2024-10-13 07:07:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:28,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548000238] [2024-10-13 07:07:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:28,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:29,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:29,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548000238] [2024-10-13 07:07:29,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548000238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:29,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:29,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:07:29,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271714047] [2024-10-13 07:07:29,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:29,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:07:29,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:29,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:07:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:07:29,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:29,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-13 07:07:29,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:29,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:29,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:30,895 INFO L124 PetriNetUnfolderBase]: 2140/3125 cut-off events. [2024-10-13 07:07:30,895 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-10-13 07:07:30,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 3125 events. 2140/3125 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14134 event pairs, 608 based on Foata normal form. 1/2589 useless extension candidates. Maximal degree in co-relation 6334. Up to 1188 conditions per place. [2024-10-13 07:07:30,908 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 96 selfloop transitions, 13 changer transitions 2/112 dead transitions. [2024-10-13 07:07:30,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 112 transitions, 499 flow [2024-10-13 07:07:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:07:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:07:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-10-13 07:07:30,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5436507936507936 [2024-10-13 07:07:30,912 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 98 flow. Second operand 7 states and 137 transitions. [2024-10-13 07:07:30,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 112 transitions, 499 flow [2024-10-13 07:07:30,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 112 transitions, 489 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-13 07:07:30,915 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 183 flow [2024-10-13 07:07:30,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-13 07:07:30,916 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2024-10-13 07:07:30,916 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 183 flow [2024-10-13 07:07:30,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-13 07:07:30,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:30,917 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:30,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:07:30,917 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)] === [2024-10-13 07:07:30,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:30,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2145649563, now seen corresponding path program 3 times [2024-10-13 07:07:30,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:30,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928592313] [2024-10-13 07:07:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:30,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:31,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:31,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928592313] [2024-10-13 07:07:31,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928592313] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:31,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:31,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:07:31,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789300554] [2024-10-13 07:07:31,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:31,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:07:31,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:31,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:07:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:07:31,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:31,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:31,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:31,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:32,632 INFO L124 PetriNetUnfolderBase]: 4722/6948 cut-off events. [2024-10-13 07:07:32,632 INFO L125 PetriNetUnfolderBase]: For 3031/3031 co-relation queries the response was YES. [2024-10-13 07:07:32,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17616 conditions, 6948 events. 4722/6948 cut-off events. For 3031/3031 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 36106 event pairs, 1348 based on Foata normal form. 4/6952 useless extension candidates. Maximal degree in co-relation 17603. Up to 2519 conditions per place. [2024-10-13 07:07:32,742 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 87 selfloop transitions, 20 changer transitions 15/123 dead transitions. [2024-10-13 07:07:32,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 123 transitions, 705 flow [2024-10-13 07:07:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:07:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:07:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-10-13 07:07:32,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-10-13 07:07:32,747 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 183 flow. Second operand 6 states and 115 transitions. [2024-10-13 07:07:32,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 123 transitions, 705 flow [2024-10-13 07:07:32,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 123 transitions, 705 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:07:32,774 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 319 flow [2024-10-13 07:07:32,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-10-13 07:07:32,775 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2024-10-13 07:07:32,776 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 319 flow [2024-10-13 07:07:32,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:32,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:32,776 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:32,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:07:32,777 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)] === [2024-10-13 07:07:32,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash 194676001, now seen corresponding path program 4 times [2024-10-13 07:07:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:32,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271193950] [2024-10-13 07:07:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:32,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:33,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:33,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271193950] [2024-10-13 07:07:33,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271193950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:33,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:33,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:07:33,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440945910] [2024-10-13 07:07:33,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:33,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:07:33,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:07:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:07:33,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:33,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:33,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:33,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:33,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:34,953 INFO L124 PetriNetUnfolderBase]: 7067/10338 cut-off events. [2024-10-13 07:07:34,954 INFO L125 PetriNetUnfolderBase]: For 12024/12024 co-relation queries the response was YES. [2024-10-13 07:07:34,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30605 conditions, 10338 events. 7067/10338 cut-off events. For 12024/12024 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 56002 event pairs, 2936 based on Foata normal form. 4/10342 useless extension candidates. Maximal degree in co-relation 30587. Up to 4784 conditions per place. [2024-10-13 07:07:35,061 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 109 selfloop transitions, 16 changer transitions 14/140 dead transitions. [2024-10-13 07:07:35,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 140 transitions, 1010 flow [2024-10-13 07:07:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:07:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:07:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-10-13 07:07:35,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-10-13 07:07:35,063 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 319 flow. Second operand 6 states and 105 transitions. [2024-10-13 07:07:35,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 140 transitions, 1010 flow [2024-10-13 07:07:35,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 140 transitions, 1006 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 07:07:35,103 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 455 flow [2024-10-13 07:07:35,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-13 07:07:35,104 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-10-13 07:07:35,104 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 455 flow [2024-10-13 07:07:35,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:35,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:35,105 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:35,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:07:35,105 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)] === [2024-10-13 07:07:35,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:35,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1109558291, now seen corresponding path program 5 times [2024-10-13 07:07:35,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:35,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420885942] [2024-10-13 07:07:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:35,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:35,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:35,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420885942] [2024-10-13 07:07:35,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420885942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:35,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:35,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:07:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762978703] [2024-10-13 07:07:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:35,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:07:35,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:07:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:07:35,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:35,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 455 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-13 07:07:35,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:35,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:35,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:37,771 INFO L124 PetriNetUnfolderBase]: 7070/10381 cut-off events. [2024-10-13 07:07:37,772 INFO L125 PetriNetUnfolderBase]: For 22879/22879 co-relation queries the response was YES. [2024-10-13 07:07:37,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34161 conditions, 10381 events. 7070/10381 cut-off events. For 22879/22879 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 57919 event pairs, 2439 based on Foata normal form. 1/10382 useless extension candidates. Maximal degree in co-relation 34139. Up to 4721 conditions per place. [2024-10-13 07:07:37,855 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 119 selfloop transitions, 28 changer transitions 3/151 dead transitions. [2024-10-13 07:07:37,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 151 transitions, 1233 flow [2024-10-13 07:07:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:07:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:07:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-10-13 07:07:37,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-10-13 07:07:37,858 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 455 flow. Second operand 7 states and 130 transitions. [2024-10-13 07:07:37,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 151 transitions, 1233 flow [2024-10-13 07:07:37,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 151 transitions, 1204 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 07:07:37,909 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 629 flow [2024-10-13 07:07:37,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-10-13 07:07:37,910 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-10-13 07:07:37,910 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 629 flow [2024-10-13 07:07:37,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-13 07:07:37,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:37,911 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:37,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:07:37,911 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)] === [2024-10-13 07:07:37,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1522170939, now seen corresponding path program 6 times [2024-10-13 07:07:37,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:37,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242600799] [2024-10-13 07:07:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242600799] [2024-10-13 07:07:38,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242600799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:38,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:38,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:07:38,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100237539] [2024-10-13 07:07:38,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:38,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:07:38,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:38,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:07:38,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:07:38,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:38,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 629 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-13 07:07:38,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:38,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:38,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:39,924 INFO L124 PetriNetUnfolderBase]: 7356/10870 cut-off events. [2024-10-13 07:07:39,924 INFO L125 PetriNetUnfolderBase]: For 33856/33856 co-relation queries the response was YES. [2024-10-13 07:07:39,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38914 conditions, 10870 events. 7356/10870 cut-off events. For 33856/33856 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 62302 event pairs, 2682 based on Foata normal form. 1/10871 useless extension candidates. Maximal degree in co-relation 38888. Up to 4351 conditions per place. [2024-10-13 07:07:40,010 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 135 selfloop transitions, 25 changer transitions 3/164 dead transitions. [2024-10-13 07:07:40,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 164 transitions, 1551 flow [2024-10-13 07:07:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:07:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:07:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-10-13 07:07:40,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-10-13 07:07:40,013 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 629 flow. Second operand 7 states and 127 transitions. [2024-10-13 07:07:40,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 164 transitions, 1551 flow [2024-10-13 07:07:40,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 164 transitions, 1502 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-13 07:07:40,111 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 859 flow [2024-10-13 07:07:40,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=859, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-10-13 07:07:40,112 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 47 predicate places. [2024-10-13 07:07:40,113 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 859 flow [2024-10-13 07:07:40,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-13 07:07:40,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:40,113 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:40,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 07:07:40,113 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)] === [2024-10-13 07:07:40,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:40,113 INFO L85 PathProgramCache]: Analyzing trace with hash 283442431, now seen corresponding path program 7 times [2024-10-13 07:07:40,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:40,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68670544] [2024-10-13 07:07:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:40,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:40,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:40,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68670544] [2024-10-13 07:07:40,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68670544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:40,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:40,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:07:40,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142096479] [2024-10-13 07:07:40,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:40,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:07:40,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:40,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:07:40,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:07:40,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:40,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:40,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:40,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:40,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:41,883 INFO L124 PetriNetUnfolderBase]: 7366/10930 cut-off events. [2024-10-13 07:07:41,884 INFO L125 PetriNetUnfolderBase]: For 48559/48559 co-relation queries the response was YES. [2024-10-13 07:07:41,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42295 conditions, 10930 events. 7366/10930 cut-off events. For 48559/48559 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 61496 event pairs, 2808 based on Foata normal form. 5/10935 useless extension candidates. Maximal degree in co-relation 42264. Up to 4877 conditions per place. [2024-10-13 07:07:41,988 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 112 selfloop transitions, 40 changer transitions 15/168 dead transitions. [2024-10-13 07:07:41,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 168 transitions, 1752 flow [2024-10-13 07:07:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:07:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:07:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-13 07:07:41,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-10-13 07:07:41,990 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 859 flow. Second operand 6 states and 110 transitions. [2024-10-13 07:07:41,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 168 transitions, 1752 flow [2024-10-13 07:07:42,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 168 transitions, 1709 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-13 07:07:42,158 INFO L231 Difference]: Finished difference. Result has 90 places, 98 transitions, 1140 flow [2024-10-13 07:07:42,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=90, PETRI_TRANSITIONS=98} [2024-10-13 07:07:42,159 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 55 predicate places. [2024-10-13 07:07:42,159 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 98 transitions, 1140 flow [2024-10-13 07:07:42,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:42,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:42,160 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:42,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 07:07:42,160 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)] === [2024-10-13 07:07:42,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1919790835, now seen corresponding path program 8 times [2024-10-13 07:07:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:42,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375396728] [2024-10-13 07:07:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:42,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:42,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:42,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375396728] [2024-10-13 07:07:42,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375396728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:42,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:42,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:07:42,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930448513] [2024-10-13 07:07:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:42,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:07:42,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:07:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:07:42,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:42,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 98 transitions, 1140 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-13 07:07:42,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:42,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:42,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:44,554 INFO L124 PetriNetUnfolderBase]: 7312/10824 cut-off events. [2024-10-13 07:07:44,555 INFO L125 PetriNetUnfolderBase]: For 61063/61063 co-relation queries the response was YES. [2024-10-13 07:07:44,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44155 conditions, 10824 events. 7312/10824 cut-off events. For 61063/61063 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 62220 event pairs, 2628 based on Foata normal form. 1/10825 useless extension candidates. Maximal degree in co-relation 44120. Up to 4339 conditions per place. [2024-10-13 07:07:44,619 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 164 selfloop transitions, 25 changer transitions 3/193 dead transitions. [2024-10-13 07:07:44,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 193 transitions, 2356 flow [2024-10-13 07:07:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:07:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:07:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-10-13 07:07:44,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-10-13 07:07:44,621 INFO L175 Difference]: Start difference. First operand has 90 places, 98 transitions, 1140 flow. Second operand 7 states and 128 transitions. [2024-10-13 07:07:44,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 193 transitions, 2356 flow [2024-10-13 07:07:44,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 193 transitions, 2202 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-10-13 07:07:44,805 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 1383 flow [2024-10-13 07:07:44,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1383, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-10-13 07:07:44,805 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 62 predicate places. [2024-10-13 07:07:44,806 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 1383 flow [2024-10-13 07:07:44,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-13 07:07:44,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:44,806 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:44,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 07:07:44,806 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)] === [2024-10-13 07:07:44,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:44,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1212925769, now seen corresponding path program 9 times [2024-10-13 07:07:44,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:44,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15157365] [2024-10-13 07:07:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:44,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:45,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:45,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15157365] [2024-10-13 07:07:45,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15157365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:45,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:45,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:07:45,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980934332] [2024-10-13 07:07:45,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:45,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:07:45,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:45,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:07:45,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:07:45,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:45,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 1383 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:45,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:45,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:45,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:46,352 INFO L124 PetriNetUnfolderBase]: 7312/10816 cut-off events. [2024-10-13 07:07:46,352 INFO L125 PetriNetUnfolderBase]: For 64645/64645 co-relation queries the response was YES. [2024-10-13 07:07:46,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44348 conditions, 10816 events. 7312/10816 cut-off events. For 64645/64645 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 61168 event pairs, 2763 based on Foata normal form. 4/10820 useless extension candidates. Maximal degree in co-relation 44310. Up to 4684 conditions per place. [2024-10-13 07:07:46,438 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 104 selfloop transitions, 60 changer transitions 16/181 dead transitions. [2024-10-13 07:07:46,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 181 transitions, 2245 flow [2024-10-13 07:07:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:07:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:07:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-10-13 07:07:46,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-10-13 07:07:46,440 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 1383 flow. Second operand 6 states and 109 transitions. [2024-10-13 07:07:46,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 181 transitions, 2245 flow [2024-10-13 07:07:46,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 181 transitions, 2188 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-13 07:07:46,613 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 1691 flow [2024-10-13 07:07:46,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1691, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2024-10-13 07:07:46,614 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 69 predicate places. [2024-10-13 07:07:46,614 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 1691 flow [2024-10-13 07:07:46,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:46,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:46,615 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:46,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 07:07:46,615 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)] === [2024-10-13 07:07:46,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1207144633, now seen corresponding path program 10 times [2024-10-13 07:07:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:46,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045563347] [2024-10-13 07:07:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:46,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:47,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045563347] [2024-10-13 07:07:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045563347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:47,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:47,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:07:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334983415] [2024-10-13 07:07:47,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:47,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:07:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:47,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:07:47,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:07:47,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:47,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 1691 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:47,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:47,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:47,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:48,122 INFO L124 PetriNetUnfolderBase]: 7255/10690 cut-off events. [2024-10-13 07:07:48,122 INFO L125 PetriNetUnfolderBase]: For 77142/77142 co-relation queries the response was YES. [2024-10-13 07:07:48,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46220 conditions, 10690 events. 7255/10690 cut-off events. For 77142/77142 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 60020 event pairs, 2551 based on Foata normal form. 7/10697 useless extension candidates. Maximal degree in co-relation 46178. Up to 4630 conditions per place. [2024-10-13 07:07:48,202 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 66 changer transitions 18/187 dead transitions. [2024-10-13 07:07:48,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 187 transitions, 2522 flow [2024-10-13 07:07:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:07:48,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:07:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-13 07:07:48,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-10-13 07:07:48,204 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 1691 flow. Second operand 6 states and 110 transitions. [2024-10-13 07:07:48,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 187 transitions, 2522 flow [2024-10-13 07:07:48,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 187 transitions, 2447 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-13 07:07:48,415 INFO L231 Difference]: Finished difference. Result has 109 places, 123 transitions, 1883 flow [2024-10-13 07:07:48,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1883, PETRI_PLACES=109, PETRI_TRANSITIONS=123} [2024-10-13 07:07:48,416 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 74 predicate places. [2024-10-13 07:07:48,416 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 123 transitions, 1883 flow [2024-10-13 07:07:48,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:48,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:48,417 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:48,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 07:07:48,417 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)] === [2024-10-13 07:07:48,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash 976585551, now seen corresponding path program 11 times [2024-10-13 07:07:48,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:48,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314769083] [2024-10-13 07:07:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:48,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:48,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:48,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314769083] [2024-10-13 07:07:48,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314769083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:48,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:48,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:07:48,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390642806] [2024-10-13 07:07:48,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:48,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:07:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:07:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:07:48,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:48,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 123 transitions, 1883 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:48,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:48,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:48,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:50,128 INFO L124 PetriNetUnfolderBase]: 7208/10578 cut-off events. [2024-10-13 07:07:50,129 INFO L125 PetriNetUnfolderBase]: For 84426/84426 co-relation queries the response was YES. [2024-10-13 07:07:50,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46588 conditions, 10578 events. 7208/10578 cut-off events. For 84426/84426 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 58160 event pairs, 2720 based on Foata normal form. 5/10583 useless extension candidates. Maximal degree in co-relation 46544. Up to 4877 conditions per place. [2024-10-13 07:07:50,215 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 125 selfloop transitions, 57 changer transitions 18/201 dead transitions. [2024-10-13 07:07:50,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 201 transitions, 2909 flow [2024-10-13 07:07:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:07:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:07:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-10-13 07:07:50,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:07:50,216 INFO L175 Difference]: Start difference. First operand has 109 places, 123 transitions, 1883 flow. Second operand 6 states and 108 transitions. [2024-10-13 07:07:50,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 201 transitions, 2909 flow [2024-10-13 07:07:50,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 201 transitions, 2764 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-10-13 07:07:50,493 INFO L231 Difference]: Finished difference. Result has 113 places, 131 transitions, 2074 flow [2024-10-13 07:07:50,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2074, PETRI_PLACES=113, PETRI_TRANSITIONS=131} [2024-10-13 07:07:50,494 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 78 predicate places. [2024-10-13 07:07:50,494 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 131 transitions, 2074 flow [2024-10-13 07:07:50,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-13 07:07:50,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:50,494 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:50,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 07:07:50,495 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)] === [2024-10-13 07:07:50,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1580537744, now seen corresponding path program 1 times [2024-10-13 07:07:50,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:50,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369098375] [2024-10-13 07:07:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:50,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369098375] [2024-10-13 07:07:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369098375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:50,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:50,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:07:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841341473] [2024-10-13 07:07:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:50,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:07:50,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:07:50,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:07:50,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:50,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 131 transitions, 2074 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-10-13 07:07:50,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:50,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:50,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:52,331 INFO L124 PetriNetUnfolderBase]: 8091/11821 cut-off events. [2024-10-13 07:07:52,331 INFO L125 PetriNetUnfolderBase]: For 85322/85322 co-relation queries the response was YES. [2024-10-13 07:07:52,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50060 conditions, 11821 events. 8091/11821 cut-off events. For 85322/85322 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 66745 event pairs, 1725 based on Foata normal form. 13/11834 useless extension candidates. Maximal degree in co-relation 50014. Up to 6536 conditions per place. [2024-10-13 07:07:52,411 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 155 selfloop transitions, 57 changer transitions 1/214 dead transitions. [2024-10-13 07:07:52,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 214 transitions, 2976 flow [2024-10-13 07:07:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:07:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:07:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-10-13 07:07:52,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5317460317460317 [2024-10-13 07:07:52,412 INFO L175 Difference]: Start difference. First operand has 113 places, 131 transitions, 2074 flow. Second operand 7 states and 134 transitions. [2024-10-13 07:07:52,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 214 transitions, 2976 flow [2024-10-13 07:07:52,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 214 transitions, 2827 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-10-13 07:07:52,640 INFO L231 Difference]: Finished difference. Result has 118 places, 136 transitions, 2194 flow [2024-10-13 07:07:52,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2194, PETRI_PLACES=118, PETRI_TRANSITIONS=136} [2024-10-13 07:07:52,641 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 83 predicate places. [2024-10-13 07:07:52,641 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 136 transitions, 2194 flow [2024-10-13 07:07:52,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-10-13 07:07:52,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:52,641 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:52,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 07:07:52,642 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)] === [2024-10-13 07:07:52,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash 15090204, now seen corresponding path program 1 times [2024-10-13 07:07:52,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:52,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488867179] [2024-10-13 07:07:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:52,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488867179] [2024-10-13 07:07:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488867179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:53,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:53,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:07:53,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472173561] [2024-10-13 07:07:53,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:53,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:07:53,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:53,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:07:53,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:07:53,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:53,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 136 transitions, 2194 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:53,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:53,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:53,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:55,586 INFO L124 PetriNetUnfolderBase]: 11771/17161 cut-off events. [2024-10-13 07:07:55,587 INFO L125 PetriNetUnfolderBase]: For 129148/129148 co-relation queries the response was YES. [2024-10-13 07:07:55,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71849 conditions, 17161 events. 11771/17161 cut-off events. For 129148/129148 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 102728 event pairs, 3177 based on Foata normal form. 8/17169 useless extension candidates. Maximal degree in co-relation 71801. Up to 5932 conditions per place. [2024-10-13 07:07:55,905 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 227 selfloop transitions, 53 changer transitions 1/282 dead transitions. [2024-10-13 07:07:55,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 282 transitions, 4317 flow [2024-10-13 07:07:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:07:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:07:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-10-13 07:07:55,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-10-13 07:07:55,908 INFO L175 Difference]: Start difference. First operand has 118 places, 136 transitions, 2194 flow. Second operand 7 states and 142 transitions. [2024-10-13 07:07:55,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 282 transitions, 4317 flow [2024-10-13 07:07:56,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 282 transitions, 4187 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-10-13 07:07:56,356 INFO L231 Difference]: Finished difference. Result has 127 places, 162 transitions, 2705 flow [2024-10-13 07:07:56,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2705, PETRI_PLACES=127, PETRI_TRANSITIONS=162} [2024-10-13 07:07:56,356 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 92 predicate places. [2024-10-13 07:07:56,356 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 162 transitions, 2705 flow [2024-10-13 07:07:56,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:56,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:56,357 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:56,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 07:07:56,357 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)] === [2024-10-13 07:07:56,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:56,358 INFO L85 PathProgramCache]: Analyzing trace with hash 613927612, now seen corresponding path program 2 times [2024-10-13 07:07:56,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:56,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496644112] [2024-10-13 07:07:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:07:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496644112] [2024-10-13 07:07:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496644112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:56,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:56,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:07:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299806679] [2024-10-13 07:07:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:56,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:07:56,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:07:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:07:56,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:07:56,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 162 transitions, 2705 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-10-13 07:07:56,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:56,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:07:56,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:59,346 INFO L124 PetriNetUnfolderBase]: 13860/20258 cut-off events. [2024-10-13 07:07:59,346 INFO L125 PetriNetUnfolderBase]: For 155163/155163 co-relation queries the response was YES. [2024-10-13 07:07:59,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86920 conditions, 20258 events. 13860/20258 cut-off events. For 155163/155163 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 124829 event pairs, 4155 based on Foata normal form. 13/20271 useless extension candidates. Maximal degree in co-relation 86867. Up to 8023 conditions per place. [2024-10-13 07:07:59,640 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 217 selfloop transitions, 59 changer transitions 1/278 dead transitions. [2024-10-13 07:07:59,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 278 transitions, 4242 flow [2024-10-13 07:07:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:07:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:07:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-10-13 07:07:59,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-10-13 07:07:59,641 INFO L175 Difference]: Start difference. First operand has 127 places, 162 transitions, 2705 flow. Second operand 7 states and 146 transitions. [2024-10-13 07:07:59,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 278 transitions, 4242 flow [2024-10-13 07:08:00,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 278 transitions, 4188 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-10-13 07:08:00,196 INFO L231 Difference]: Finished difference. Result has 135 places, 168 transitions, 2914 flow [2024-10-13 07:08:00,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2914, PETRI_PLACES=135, PETRI_TRANSITIONS=168} [2024-10-13 07:08:00,197 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 100 predicate places. [2024-10-13 07:08:00,197 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 168 transitions, 2914 flow [2024-10-13 07:08:00,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-10-13 07:08:00,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:00,198 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:00,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 07:08:00,198 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)] === [2024-10-13 07:08:00,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash -586131088, now seen corresponding path program 2 times [2024-10-13 07:08:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:00,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548876881] [2024-10-13 07:08:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:00,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:08:00,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548876881] [2024-10-13 07:08:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548876881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:00,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:00,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:08:00,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174251504] [2024-10-13 07:08:00,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:00,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:08:00,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:00,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:08:00,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:08:00,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:08:00,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 168 transitions, 2914 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:00,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:00,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:08:00,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:03,495 INFO L124 PetriNetUnfolderBase]: 15896/23214 cut-off events. [2024-10-13 07:08:03,496 INFO L125 PetriNetUnfolderBase]: For 191170/191170 co-relation queries the response was YES. [2024-10-13 07:08:03,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99618 conditions, 23214 events. 15896/23214 cut-off events. For 191170/191170 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 143626 event pairs, 3235 based on Foata normal form. 12/23226 useless extension candidates. Maximal degree in co-relation 99562. Up to 9838 conditions per place. [2024-10-13 07:08:03,840 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 238 selfloop transitions, 54 changer transitions 1/294 dead transitions. [2024-10-13 07:08:03,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 294 transitions, 4692 flow [2024-10-13 07:08:03,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-10-13 07:08:03,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-10-13 07:08:03,842 INFO L175 Difference]: Start difference. First operand has 135 places, 168 transitions, 2914 flow. Second operand 7 states and 136 transitions. [2024-10-13 07:08:03,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 294 transitions, 4692 flow [2024-10-13 07:08:04,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 294 transitions, 4537 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:04,728 INFO L231 Difference]: Finished difference. Result has 143 places, 182 transitions, 3251 flow [2024-10-13 07:08:04,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3251, PETRI_PLACES=143, PETRI_TRANSITIONS=182} [2024-10-13 07:08:04,728 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 108 predicate places. [2024-10-13 07:08:04,728 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 182 transitions, 3251 flow [2024-10-13 07:08:04,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:04,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:04,729 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:04,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 07:08:04,729 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)] === [2024-10-13 07:08:04,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:04,730 INFO L85 PathProgramCache]: Analyzing trace with hash 391438696, now seen corresponding path program 3 times [2024-10-13 07:08:04,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:04,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697073449] [2024-10-13 07:08:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:04,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:08:05,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:05,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697073449] [2024-10-13 07:08:05,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697073449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:05,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:05,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:08:05,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049392998] [2024-10-13 07:08:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:05,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:08:05,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:08:05,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:08:05,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:08:05,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 182 transitions, 3251 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:05,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:05,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:08:05,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:09,284 INFO L124 PetriNetUnfolderBase]: 16328/23852 cut-off events. [2024-10-13 07:08:09,284 INFO L125 PetriNetUnfolderBase]: For 214889/214889 co-relation queries the response was YES. [2024-10-13 07:08:09,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103312 conditions, 23852 events. 16328/23852 cut-off events. For 214889/214889 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 149783 event pairs, 4855 based on Foata normal form. 8/23860 useless extension candidates. Maximal degree in co-relation 103252. Up to 9555 conditions per place. [2024-10-13 07:08:09,615 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 213 selfloop transitions, 78 changer transitions 1/293 dead transitions. [2024-10-13 07:08:09,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 293 transitions, 4823 flow [2024-10-13 07:08:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-10-13 07:08:09,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-13 07:08:09,631 INFO L175 Difference]: Start difference. First operand has 143 places, 182 transitions, 3251 flow. Second operand 7 states and 147 transitions. [2024-10-13 07:08:09,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 293 transitions, 4823 flow [2024-10-13 07:08:10,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 293 transitions, 4722 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:10,472 INFO L231 Difference]: Finished difference. Result has 150 places, 189 transitions, 3519 flow [2024-10-13 07:08:10,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3178, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3519, PETRI_PLACES=150, PETRI_TRANSITIONS=189} [2024-10-13 07:08:10,473 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 115 predicate places. [2024-10-13 07:08:10,473 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 189 transitions, 3519 flow [2024-10-13 07:08:10,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:10,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:10,473 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:10,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 07:08:10,473 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)] === [2024-10-13 07:08:10,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:10,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1494868392, now seen corresponding path program 3 times [2024-10-13 07:08:10,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:10,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544390303] [2024-10-13 07:08:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:10,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:08:10,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:10,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544390303] [2024-10-13 07:08:10,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544390303] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:10,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:10,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:08:10,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395007664] [2024-10-13 07:08:10,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:10,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:08:10,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:10,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:08:10,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:08:10,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:08:10,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 189 transitions, 3519 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:10,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:10,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:08:10,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:15,580 INFO L124 PetriNetUnfolderBase]: 19220/28076 cut-off events. [2024-10-13 07:08:15,580 INFO L125 PetriNetUnfolderBase]: For 270229/270229 co-relation queries the response was YES. [2024-10-13 07:08:15,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123321 conditions, 28076 events. 19220/28076 cut-off events. For 270229/270229 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 177742 event pairs, 2855 based on Foata normal form. 12/28088 useless extension candidates. Maximal degree in co-relation 123258. Up to 13311 conditions per place. [2024-10-13 07:08:15,955 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 295 selfloop transitions, 64 changer transitions 1/361 dead transitions. [2024-10-13 07:08:15,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 361 transitions, 6586 flow [2024-10-13 07:08:15,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-10-13 07:08:15,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-13 07:08:15,957 INFO L175 Difference]: Start difference. First operand has 150 places, 189 transitions, 3519 flow. Second operand 7 states and 135 transitions. [2024-10-13 07:08:15,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 361 transitions, 6586 flow [2024-10-13 07:08:17,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 361 transitions, 6368 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:17,305 INFO L231 Difference]: Finished difference. Result has 158 places, 228 transitions, 4393 flow [2024-10-13 07:08:17,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4393, PETRI_PLACES=158, PETRI_TRANSITIONS=228} [2024-10-13 07:08:17,305 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 123 predicate places. [2024-10-13 07:08:17,305 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 228 transitions, 4393 flow [2024-10-13 07:08:17,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:17,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:17,306 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:17,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 07:08:17,306 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)] === [2024-10-13 07:08:17,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:17,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1075770402, now seen corresponding path program 4 times [2024-10-13 07:08:17,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:17,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593186317] [2024-10-13 07:08:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:17,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:08:17,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:17,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593186317] [2024-10-13 07:08:17,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593186317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:17,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:17,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:08:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087805700] [2024-10-13 07:08:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:17,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:08:17,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:08:17,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:08:17,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:08:17,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 228 transitions, 4393 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:17,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:17,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:08:17,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:22,614 INFO L124 PetriNetUnfolderBase]: 19199/28039 cut-off events. [2024-10-13 07:08:22,615 INFO L125 PetriNetUnfolderBase]: For 287582/287582 co-relation queries the response was YES. [2024-10-13 07:08:22,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126408 conditions, 28039 events. 19199/28039 cut-off events. For 287582/287582 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 178602 event pairs, 5771 based on Foata normal form. 13/28052 useless extension candidates. Maximal degree in co-relation 126340. Up to 11087 conditions per place. [2024-10-13 07:08:22,992 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 218 selfloop transitions, 109 changer transitions 1/329 dead transitions. [2024-10-13 07:08:22,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 329 transitions, 5850 flow [2024-10-13 07:08:22,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-10-13 07:08:22,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-13 07:08:22,993 INFO L175 Difference]: Start difference. First operand has 158 places, 228 transitions, 4393 flow. Second operand 7 states and 147 transitions. [2024-10-13 07:08:22,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 329 transitions, 5850 flow [2024-10-13 07:08:24,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 329 transitions, 5814 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-10-13 07:08:24,587 INFO L231 Difference]: Finished difference. Result has 166 places, 230 transitions, 4632 flow [2024-10-13 07:08:24,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4632, PETRI_PLACES=166, PETRI_TRANSITIONS=230} [2024-10-13 07:08:24,588 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 131 predicate places. [2024-10-13 07:08:24,588 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 230 transitions, 4632 flow [2024-10-13 07:08:24,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:24,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:24,589 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:24,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 07:08:24,589 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)] === [2024-10-13 07:08:24,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:24,589 INFO L85 PathProgramCache]: Analyzing trace with hash 850115986, now seen corresponding path program 4 times [2024-10-13 07:08:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:24,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830625213] [2024-10-13 07:08:24,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:24,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:08:24,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:24,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830625213] [2024-10-13 07:08:24,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830625213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:24,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:24,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:08:24,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033056639] [2024-10-13 07:08:24,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:24,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:08:24,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:24,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:08:24,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:08:24,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:08:24,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 230 transitions, 4632 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:24,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:24,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:08:24,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:29,781 INFO L124 PetriNetUnfolderBase]: 19795/28951 cut-off events. [2024-10-13 07:08:29,781 INFO L125 PetriNetUnfolderBase]: For 322074/322074 co-relation queries the response was YES. [2024-10-13 07:08:30,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133011 conditions, 28951 events. 19795/28951 cut-off events. For 322074/322074 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 185748 event pairs, 6981 based on Foata normal form. 12/28963 useless extension candidates. Maximal degree in co-relation 132940. Up to 16448 conditions per place. [2024-10-13 07:08:30,148 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 215 selfloop transitions, 119 changer transitions 1/336 dead transitions. [2024-10-13 07:08:30,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 336 transitions, 6294 flow [2024-10-13 07:08:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-10-13 07:08:30,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-10-13 07:08:30,150 INFO L175 Difference]: Start difference. First operand has 166 places, 230 transitions, 4632 flow. Second operand 7 states and 142 transitions. [2024-10-13 07:08:30,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 336 transitions, 6294 flow [2024-10-13 07:08:31,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 336 transitions, 6069 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:31,312 INFO L231 Difference]: Finished difference. Result has 172 places, 245 transitions, 5106 flow [2024-10-13 07:08:31,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4421, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5106, PETRI_PLACES=172, PETRI_TRANSITIONS=245} [2024-10-13 07:08:31,312 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 137 predicate places. [2024-10-13 07:08:31,312 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 245 transitions, 5106 flow [2024-10-13 07:08:31,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:31,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:31,313 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:31,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 07:08:31,313 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)] === [2024-10-13 07:08:31,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1333852562, now seen corresponding path program 5 times [2024-10-13 07:08:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:31,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459716487] [2024-10-13 07:08:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:31,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:08:31,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459716487] [2024-10-13 07:08:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459716487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:31,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:31,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:08:31,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550093] [2024-10-13 07:08:31,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:31,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:08:31,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:08:31,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:08:31,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-13 07:08:31,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 245 transitions, 5106 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-10-13 07:08:31,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:31,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-13 07:08:31,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand