./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-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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-nzb-file-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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:28:17,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:28:18,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:28:18,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:28:18,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:28:18,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:28:18,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:28:18,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:28:18,092 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:28:18,092 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:28:18,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:28:18,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:28:18,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:28:18,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:28:18,093 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:28:18,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:28:18,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:28:18,094 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:28:18,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:28:18,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:28:18,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:28:18,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:28:18,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:28:18,099 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:28:18,099 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:28:18,099 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:28:18,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:28:18,100 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:28:18,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:28:18,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:28:18,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:28:18,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:28:18,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:28:18,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:28:18,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:28:18,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:28:18,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:28:18,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:28:18,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:28:18,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:28:18,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:28:18,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:28:18,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-10-24 12:28:18,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:28:18,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:28:18,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:28:18,335 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:28:18,335 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:28:18,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-10-24 12:28:19,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:28:20,130 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:28:20,131 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-10-24 12:28:20,146 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca16fd71d/d28703aef1a648a1b167193f54b8acb1/FLAGbdda2ba63 [2024-10-24 12:28:20,435 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca16fd71d/d28703aef1a648a1b167193f54b8acb1 [2024-10-24 12:28:20,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:28:20,438 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:28:20,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:28:20,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:28:20,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:28:20,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a21888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20, skipping insertion in model container [2024-10-24 12:28:20,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,472 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:28:20,692 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-nzb-file-subst.wvr.c[6540,6553] [2024-10-24 12:28:20,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:28:20,718 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:28:20,750 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-nzb-file-subst.wvr.c[6540,6553] [2024-10-24 12:28:20,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:28:20,770 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:28:20,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20 WrapperNode [2024-10-24 12:28:20,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:28:20,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:28:20,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:28:20,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:28:20,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,834 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2024-10-24 12:28:20,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:28:20,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:28:20,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:28:20,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:28:20,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,866 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-24 12:28:20,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,878 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:28:20,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:28:20,914 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:28:20,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:28:20,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (1/1) ... [2024-10-24 12:28:20,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:28:20,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:20,958 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) [2024-10-24 12:28:20,969 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 [2024-10-24 12:28:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:28:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:28:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:28:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:28:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:28:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 12:28:21,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 12:28:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:28:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:28:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:28:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:28:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:28:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:28:21,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:28:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:28:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:28:21,014 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:28:21,119 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:28:21,121 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:28:21,785 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:28:21,785 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:28:22,637 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:28:22,637 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 12:28:22,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:28:22 BoogieIcfgContainer [2024-10-24 12:28:22,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:28:22,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:28:22,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:28:22,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:28:22,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:28:20" (1/3) ... [2024-10-24 12:28:22,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccdd79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:28:22, skipping insertion in model container [2024-10-24 12:28:22,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:20" (2/3) ... [2024-10-24 12:28:22,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccdd79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:28:22, skipping insertion in model container [2024-10-24 12:28:22,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:28:22" (3/3) ... [2024-10-24 12:28:22,644 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-10-24 12:28:22,659 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:28:22,660 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:28:22,660 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:28:22,820 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 12:28:22,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-10-24 12:28:22,878 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-10-24 12:28:22,879 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:28:22,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-24 12:28:22,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-10-24 12:28:22,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-10-24 12:28:22,892 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:28:22,897 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;@2fd1342, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:28:22,898 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:28:22,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:28:22,916 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-10-24 12:28:22,916 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:28:22,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:22,917 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] [2024-10-24 12:28:22,918 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)] === [2024-10-24 12:28:22,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash 46384734, now seen corresponding path program 1 times [2024-10-24 12:28:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246315064] [2024-10-24 12:28:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:22,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:28:23,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:23,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246315064] [2024-10-24 12:28:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246315064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:23,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:23,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:28:23,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545139208] [2024-10-24 12:28:23,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:23,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:28:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:28:23,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:28:23,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:23,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-24 12:28:23,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:23,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:23,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:23,991 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2024-10-24 12:28:23,991 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-10-24 12:28:23,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12261 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2024-10-24 12:28:24,018 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-10-24 12:28:24,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2024-10-24 12:28:24,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:28:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:28:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-10-24 12:28:24,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-10-24 12:28:24,031 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2024-10-24 12:28:24,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2024-10-24 12:28:24,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 12:28:24,045 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2024-10-24 12:28:24,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-10-24 12:28:24,052 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-10-24 12:28:24,053 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2024-10-24 12:28:24,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-24 12:28:24,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:24,053 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, 1] [2024-10-24 12:28:24,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:28:24,054 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)] === [2024-10-24 12:28:24,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:24,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2050377923, now seen corresponding path program 1 times [2024-10-24 12:28:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:24,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581466027] [2024-10-24 12:28:24,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:24,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:28:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581466027] [2024-10-24 12:28:24,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581466027] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:28:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386814688] [2024-10-24 12:28:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:24,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:24,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:24,273 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) [2024-10-24 12:28:24,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:28:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:24,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 12:28:24,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:28:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:28:24,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:28:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:28:24,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386814688] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:28:24,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:28:24,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-24 12:28:24,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928434891] [2024-10-24 12:28:24,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:28:24,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:28:24,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:24,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:28:24,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:28:24,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:24,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-10-24 12:28:24,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:24,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:24,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:25,171 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2024-10-24 12:28:25,173 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-10-24 12:28:25,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12260 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2024-10-24 12:28:25,184 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-10-24 12:28:25,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2024-10-24 12:28:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:28:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:28:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-10-24 12:28:25,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2024-10-24 12:28:25,188 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2024-10-24 12:28:25,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2024-10-24 12:28:25,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:28:25,190 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2024-10-24 12:28:25,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2024-10-24 12:28:25,192 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-10-24 12:28:25,193 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2024-10-24 12:28:25,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-10-24 12:28:25,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:25,193 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:25,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 12:28:25,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:25,395 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)] === [2024-10-24 12:28:25,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash 154946276, now seen corresponding path program 2 times [2024-10-24 12:28:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:25,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481978327] [2024-10-24 12:28:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:25,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:25,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:25,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481978327] [2024-10-24 12:28:25,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481978327] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:28:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255816403] [2024-10-24 12:28:25,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:28:25,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:25,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:25,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:28:25,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:28:25,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 12:28:25,757 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:28:25,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:28:25,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:28:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 12:28:27,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:28:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255816403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:27,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:28:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-10-24 12:28:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461584541] [2024-10-24 12:28:27,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:27,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:27,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:27,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:27,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:28:27,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:27,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:27,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:27,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:27,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:28,396 INFO L124 PetriNetUnfolderBase]: 3141/4412 cut-off events. [2024-10-24 12:28:28,397 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-24 12:28:28,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 4412 events. 3141/4412 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19275 event pairs, 1692 based on Foata normal form. 1/3561 useless extension candidates. Maximal degree in co-relation 8866. Up to 3132 conditions per place. [2024-10-24 12:28:28,424 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 93 selfloop transitions, 2 changer transitions 8/104 dead transitions. [2024-10-24 12:28:28,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 530 flow [2024-10-24 12:28:28,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-10-24 12:28:28,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-10-24 12:28:28,428 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 112 transitions. [2024-10-24 12:28:28,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 530 flow [2024-10-24 12:28:28,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 506 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-24 12:28:28,431 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 203 flow [2024-10-24 12:28:28,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-10-24 12:28:28,432 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-10-24 12:28:28,432 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 203 flow [2024-10-24 12:28:28,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:28,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:28,433 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:28,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:28:28,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 12:28:28,634 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)] === [2024-10-24 12:28:28,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:28,635 INFO L85 PathProgramCache]: Analyzing trace with hash -507933382, now seen corresponding path program 3 times [2024-10-24 12:28:28,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:28,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039476837] [2024-10-24 12:28:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:28,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:28,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039476837] [2024-10-24 12:28:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039476837] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:28:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679167540] [2024-10-24 12:28:28,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:28:28,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:28,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:28,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:28:28,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:28:29,013 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-24 12:28:29,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:28:29,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 12:28:29,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:28:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 12:28:30,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:28:30,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679167540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:30,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:28:30,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-10-24 12:28:30,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424587518] [2024-10-24 12:28:30,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:30,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:30,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:30,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:30,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:28:30,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:30,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:30,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:30,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:30,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:31,564 INFO L124 PetriNetUnfolderBase]: 3904/5601 cut-off events. [2024-10-24 12:28:31,564 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-10-24 12:28:31,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 5601 events. 3904/5601 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26283 event pairs, 2311 based on Foata normal form. 1/5093 useless extension candidates. Maximal degree in co-relation 11841. Up to 3990 conditions per place. [2024-10-24 12:28:31,613 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 89 selfloop transitions, 3 changer transitions 8/101 dead transitions. [2024-10-24 12:28:31,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 517 flow [2024-10-24 12:28:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-24 12:28:31,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44081632653061226 [2024-10-24 12:28:31,619 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 203 flow. Second operand 5 states and 108 transitions. [2024-10-24 12:28:31,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 517 flow [2024-10-24 12:28:31,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 508 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:31,629 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 220 flow [2024-10-24 12:28:31,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-10-24 12:28:31,634 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-10-24 12:28:31,634 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 220 flow [2024-10-24 12:28:31,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:31,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:31,634 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:31,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 12:28:31,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:31,835 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)] === [2024-10-24 12:28:31,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:31,837 INFO L85 PathProgramCache]: Analyzing trace with hash -105214844, now seen corresponding path program 4 times [2024-10-24 12:28:31,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:31,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640888524] [2024-10-24 12:28:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:31,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640888524] [2024-10-24 12:28:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640888524] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:28:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768424880] [2024-10-24 12:28:31,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 12:28:32,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:32,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:32,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:28:32,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:28:32,169 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 12:28:32,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:28:32,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 12:28:32,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:28:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:32,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:28:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768424880] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:28:32,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:28:32,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-24 12:28:32,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542053441] [2024-10-24 12:28:32,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:28:32,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:28:32,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:32,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:28:32,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:28:32,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:32,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-10-24 12:28:32,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:32,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:32,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:33,242 INFO L124 PetriNetUnfolderBase]: 3875/5552 cut-off events. [2024-10-24 12:28:33,243 INFO L125 PetriNetUnfolderBase]: For 2123/2123 co-relation queries the response was YES. [2024-10-24 12:28:33,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12312 conditions, 5552 events. 3875/5552 cut-off events. For 2123/2123 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25529 event pairs, 3170 based on Foata normal form. 1/5044 useless extension candidates. Maximal degree in co-relation 12271. Up to 5531 conditions per place. [2024-10-24 12:28:33,275 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 40 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-10-24 12:28:33,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 354 flow [2024-10-24 12:28:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:28:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:28:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-10-24 12:28:33,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2024-10-24 12:28:33,279 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 220 flow. Second operand 7 states and 87 transitions. [2024-10-24 12:28:33,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 354 flow [2024-10-24 12:28:33,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 348 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:33,288 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 282 flow [2024-10-24 12:28:33,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-10-24 12:28:33,290 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-10-24 12:28:33,290 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 282 flow [2024-10-24 12:28:33,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-10-24 12:28:33,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:33,291 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:33,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:28:33,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:33,493 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)] === [2024-10-24 12:28:33,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1674624371, now seen corresponding path program 5 times [2024-10-24 12:28:33,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:33,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149892496] [2024-10-24 12:28:33,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:33,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:35,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:35,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149892496] [2024-10-24 12:28:35,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149892496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:35,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:35,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:35,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307797885] [2024-10-24 12:28:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:35,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:35,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:35,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:35,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:35,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:35,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:35,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:36,612 INFO L124 PetriNetUnfolderBase]: 4646/6750 cut-off events. [2024-10-24 12:28:36,613 INFO L125 PetriNetUnfolderBase]: For 1699/1699 co-relation queries the response was YES. [2024-10-24 12:28:36,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14742 conditions, 6750 events. 4646/6750 cut-off events. For 1699/1699 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 32655 event pairs, 3079 based on Foata normal form. 1/6160 useless extension candidates. Maximal degree in co-relation 14629. Up to 5164 conditions per place. [2024-10-24 12:28:36,651 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 95 selfloop transitions, 7 changer transitions 5/108 dead transitions. [2024-10-24 12:28:36,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 621 flow [2024-10-24 12:28:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-10-24 12:28:36,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-10-24 12:28:36,653 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 282 flow. Second operand 5 states and 110 transitions. [2024-10-24 12:28:36,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 621 flow [2024-10-24 12:28:36,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 108 transitions, 585 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-24 12:28:36,661 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 306 flow [2024-10-24 12:28:36,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-24 12:28:36,662 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-10-24 12:28:36,662 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 306 flow [2024-10-24 12:28:36,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:36,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:36,663 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:36,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:28:36,663 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)] === [2024-10-24 12:28:36,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash -763439597, now seen corresponding path program 6 times [2024-10-24 12:28:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:36,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994960580] [2024-10-24 12:28:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:38,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:38,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994960580] [2024-10-24 12:28:38,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994960580] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:38,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:38,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:38,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71154002] [2024-10-24 12:28:38,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:38,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:38,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:38,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:38,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:38,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:38,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:38,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:39,899 INFO L124 PetriNetUnfolderBase]: 7243/10404 cut-off events. [2024-10-24 12:28:39,899 INFO L125 PetriNetUnfolderBase]: For 5609/5609 co-relation queries the response was YES. [2024-10-24 12:28:39,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23916 conditions, 10404 events. 7243/10404 cut-off events. For 5609/5609 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 55810 event pairs, 2645 based on Foata normal form. 1/9616 useless extension candidates. Maximal degree in co-relation 23817. Up to 4983 conditions per place. [2024-10-24 12:28:39,955 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 115 selfloop transitions, 17 changer transitions 2/135 dead transitions. [2024-10-24 12:28:39,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 135 transitions, 777 flow [2024-10-24 12:28:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:39,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-24 12:28:39,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-10-24 12:28:39,957 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 306 flow. Second operand 5 states and 131 transitions. [2024-10-24 12:28:39,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 135 transitions, 777 flow [2024-10-24 12:28:39,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 135 transitions, 766 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-24 12:28:39,972 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 452 flow [2024-10-24 12:28:39,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2024-10-24 12:28:39,972 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-10-24 12:28:39,973 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 452 flow [2024-10-24 12:28:39,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:39,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:39,973 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:39,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:28:39,973 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)] === [2024-10-24 12:28:39,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1901130979, now seen corresponding path program 7 times [2024-10-24 12:28:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:39,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271709281] [2024-10-24 12:28:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:41,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:41,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271709281] [2024-10-24 12:28:41,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271709281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:41,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:41,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:41,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911343432] [2024-10-24 12:28:41,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:41,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:41,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:41,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:41,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:41,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:41,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:41,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:42,846 INFO L124 PetriNetUnfolderBase]: 8259/11916 cut-off events. [2024-10-24 12:28:42,846 INFO L125 PetriNetUnfolderBase]: For 12329/12329 co-relation queries the response was YES. [2024-10-24 12:28:42,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31690 conditions, 11916 events. 8259/11916 cut-off events. For 12329/12329 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 64690 event pairs, 4207 based on Foata normal form. 1/11917 useless extension candidates. Maximal degree in co-relation 31588. Up to 7243 conditions per place. [2024-10-24 12:28:42,919 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 133 selfloop transitions, 21 changer transitions 2/157 dead transitions. [2024-10-24 12:28:42,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 157 transitions, 1047 flow [2024-10-24 12:28:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-10-24 12:28:42,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-10-24 12:28:42,921 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 452 flow. Second operand 5 states and 135 transitions. [2024-10-24 12:28:42,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 157 transitions, 1047 flow [2024-10-24 12:28:42,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 157 transitions, 1035 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-24 12:28:42,961 INFO L231 Difference]: Finished difference. Result has 78 places, 94 transitions, 636 flow [2024-10-24 12:28:42,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=636, PETRI_PLACES=78, PETRI_TRANSITIONS=94} [2024-10-24 12:28:42,961 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-10-24 12:28:42,961 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 94 transitions, 636 flow [2024-10-24 12:28:42,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:42,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:42,962 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:42,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:28:42,962 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)] === [2024-10-24 12:28:42,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash 186084019, now seen corresponding path program 8 times [2024-10-24 12:28:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:42,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926888181] [2024-10-24 12:28:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:42,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:44,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:44,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926888181] [2024-10-24 12:28:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926888181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:44,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:44,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763371367] [2024-10-24 12:28:44,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:44,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:44,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:44,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 94 transitions, 636 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:44,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:44,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:44,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:45,965 INFO L124 PetriNetUnfolderBase]: 8359/12076 cut-off events. [2024-10-24 12:28:45,969 INFO L125 PetriNetUnfolderBase]: For 21820/21820 co-relation queries the response was YES. [2024-10-24 12:28:46,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35871 conditions, 12076 events. 8359/12076 cut-off events. For 21820/21820 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 64873 event pairs, 5131 based on Foata normal form. 1/12077 useless extension candidates. Maximal degree in co-relation 35765. Up to 9400 conditions per place. [2024-10-24 12:28:46,047 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 135 selfloop transitions, 9 changer transitions 4/149 dead transitions. [2024-10-24 12:28:46,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 149 transitions, 1173 flow [2024-10-24 12:28:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:46,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-10-24 12:28:46,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-10-24 12:28:46,049 INFO L175 Difference]: Start difference. First operand has 78 places, 94 transitions, 636 flow. Second operand 5 states and 110 transitions. [2024-10-24 12:28:46,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 149 transitions, 1173 flow [2024-10-24 12:28:46,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 149 transitions, 1163 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-24 12:28:46,095 INFO L231 Difference]: Finished difference. Result has 84 places, 98 transitions, 710 flow [2024-10-24 12:28:46,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=84, PETRI_TRANSITIONS=98} [2024-10-24 12:28:46,096 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-10-24 12:28:46,096 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 98 transitions, 710 flow [2024-10-24 12:28:46,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-10-24 12:28:46,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:46,096 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:46,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:28:46,097 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)] === [2024-10-24 12:28:46,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:46,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1829421042, now seen corresponding path program 1 times [2024-10-24 12:28:46,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:46,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044199279] [2024-10-24 12:28:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:46,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:46,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044199279] [2024-10-24 12:28:46,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044199279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:46,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:46,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:28:46,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17923412] [2024-10-24 12:28:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:46,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:28:46,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:46,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:28:46,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:28:46,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:46,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 98 transitions, 710 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-24 12:28:46,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:46,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:46,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:48,235 INFO L124 PetriNetUnfolderBase]: 9017/13049 cut-off events. [2024-10-24 12:28:48,235 INFO L125 PetriNetUnfolderBase]: For 26451/26451 co-relation queries the response was YES. [2024-10-24 12:28:48,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39266 conditions, 13049 events. 9017/13049 cut-off events. For 26451/26451 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 73902 event pairs, 2508 based on Foata normal form. 3/13052 useless extension candidates. Maximal degree in co-relation 39157. Up to 9163 conditions per place. [2024-10-24 12:28:48,318 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 108 selfloop transitions, 7 changer transitions 40/156 dead transitions. [2024-10-24 12:28:48,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 156 transitions, 1340 flow [2024-10-24 12:28:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:28:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:28:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-10-24 12:28:48,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-10-24 12:28:48,320 INFO L175 Difference]: Start difference. First operand has 84 places, 98 transitions, 710 flow. Second operand 4 states and 103 transitions. [2024-10-24 12:28:48,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 156 transitions, 1340 flow [2024-10-24 12:28:48,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 156 transitions, 1325 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-24 12:28:48,365 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 672 flow [2024-10-24 12:28:48,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=672, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-10-24 12:28:48,366 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-10-24 12:28:48,366 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 672 flow [2024-10-24 12:28:48,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-24 12:28:48,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:48,366 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:48,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:28:48,367 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)] === [2024-10-24 12:28:48,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash 856509064, now seen corresponding path program 2 times [2024-10-24 12:28:48,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000969186] [2024-10-24 12:28:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:48,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:48,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:48,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000969186] [2024-10-24 12:28:48,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000969186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:48,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:48,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:48,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929407588] [2024-10-24 12:28:48,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:48,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:48,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:48,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:48,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 672 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-10-24 12:28:48,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:48,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:48,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:51,181 INFO L124 PetriNetUnfolderBase]: 11865/17039 cut-off events. [2024-10-24 12:28:51,182 INFO L125 PetriNetUnfolderBase]: For 30504/30504 co-relation queries the response was YES. [2024-10-24 12:28:51,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50398 conditions, 17039 events. 11865/17039 cut-off events. For 30504/30504 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 96789 event pairs, 3489 based on Foata normal form. 1/17040 useless extension candidates. Maximal degree in co-relation 50297. Up to 7451 conditions per place. [2024-10-24 12:28:51,334 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 152 selfloop transitions, 27 changer transitions 6/186 dead transitions. [2024-10-24 12:28:51,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 186 transitions, 1536 flow [2024-10-24 12:28:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:51,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-10-24 12:28:51,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2024-10-24 12:28:51,336 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 672 flow. Second operand 5 states and 138 transitions. [2024-10-24 12:28:51,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 186 transitions, 1536 flow [2024-10-24 12:28:51,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 186 transitions, 1513 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-24 12:28:51,427 INFO L231 Difference]: Finished difference. Result has 93 places, 109 transitions, 921 flow [2024-10-24 12:28:51,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=921, PETRI_PLACES=93, PETRI_TRANSITIONS=109} [2024-10-24 12:28:51,429 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-10-24 12:28:51,429 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 109 transitions, 921 flow [2024-10-24 12:28:51,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-10-24 12:28:51,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:51,429 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:51,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:28:51,429 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)] === [2024-10-24 12:28:51,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:51,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1750016208, now seen corresponding path program 1 times [2024-10-24 12:28:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:51,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222222750] [2024-10-24 12:28:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:51,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:51,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222222750] [2024-10-24 12:28:51,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222222750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:51,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:51,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:28:51,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310615358] [2024-10-24 12:28:51,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:51,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:28:51,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:51,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:28:51,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:28:51,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:51,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 109 transitions, 921 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-24 12:28:51,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:51,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:51,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:54,549 INFO L124 PetriNetUnfolderBase]: 12725/18307 cut-off events. [2024-10-24 12:28:54,550 INFO L125 PetriNetUnfolderBase]: For 44466/44466 co-relation queries the response was YES. [2024-10-24 12:28:54,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58167 conditions, 18307 events. 12725/18307 cut-off events. For 44466/44466 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 105177 event pairs, 7669 based on Foata normal form. 4/18311 useless extension candidates. Maximal degree in co-relation 58055. Up to 12847 conditions per place. [2024-10-24 12:28:54,668 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 119 selfloop transitions, 4 changer transitions 37/161 dead transitions. [2024-10-24 12:28:54,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 161 transitions, 1504 flow [2024-10-24 12:28:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:28:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:28:54,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-24 12:28:54,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-10-24 12:28:54,671 INFO L175 Difference]: Start difference. First operand has 93 places, 109 transitions, 921 flow. Second operand 4 states and 102 transitions. [2024-10-24 12:28:54,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 161 transitions, 1504 flow [2024-10-24 12:28:54,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 161 transitions, 1480 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-24 12:28:54,852 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 814 flow [2024-10-24 12:28:54,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=814, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2024-10-24 12:28:54,854 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-10-24 12:28:54,855 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 814 flow [2024-10-24 12:28:54,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-24 12:28:54,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:54,858 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:54,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 12:28:54,859 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)] === [2024-10-24 12:28:54,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:54,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1115814632, now seen corresponding path program 1 times [2024-10-24 12:28:54,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:54,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201846779] [2024-10-24 12:28:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:54,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:55,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:55,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201846779] [2024-10-24 12:28:55,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201846779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:55,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:55,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:28:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013191910] [2024-10-24 12:28:55,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:55,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:28:55,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:28:55,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:28:55,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:55,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:55,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:55,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:55,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:58,070 INFO L124 PetriNetUnfolderBase]: 11864/17088 cut-off events. [2024-10-24 12:28:58,070 INFO L125 PetriNetUnfolderBase]: For 37922/37922 co-relation queries the response was YES. [2024-10-24 12:28:58,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51651 conditions, 17088 events. 11864/17088 cut-off events. For 37922/37922 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 96297 event pairs, 7843 based on Foata normal form. 410/17498 useless extension candidates. Maximal degree in co-relation 51538. Up to 13057 conditions per place. [2024-10-24 12:28:58,478 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 109 selfloop transitions, 13 changer transitions 2/125 dead transitions. [2024-10-24 12:28:58,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 125 transitions, 1187 flow [2024-10-24 12:28:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:28:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:28:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-24 12:28:58,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-10-24 12:28:58,479 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 814 flow. Second operand 3 states and 78 transitions. [2024-10-24 12:28:58,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 125 transitions, 1187 flow [2024-10-24 12:28:58,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 125 transitions, 1156 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-10-24 12:28:58,519 INFO L231 Difference]: Finished difference. Result has 95 places, 98 transitions, 814 flow [2024-10-24 12:28:58,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=95, PETRI_TRANSITIONS=98} [2024-10-24 12:28:58,520 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-10-24 12:28:58,520 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 98 transitions, 814 flow [2024-10-24 12:28:58,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:58,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:58,520 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:58,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 12:28:58,521 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)] === [2024-10-24 12:28:58,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:58,522 INFO L85 PathProgramCache]: Analyzing trace with hash -805292702, now seen corresponding path program 3 times [2024-10-24 12:28:58,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:58,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275975456] [2024-10-24 12:28:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:58,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:58,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:58,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275975456] [2024-10-24 12:28:58,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275975456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:58,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:58,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:58,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259352046] [2024-10-24 12:28:58,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:58,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:58,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:58,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:58,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:58,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:58,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 98 transitions, 814 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-10-24 12:28:58,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:58,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:58,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:01,360 INFO L124 PetriNetUnfolderBase]: 13079/18935 cut-off events. [2024-10-24 12:29:01,360 INFO L125 PetriNetUnfolderBase]: For 38584/38584 co-relation queries the response was YES. [2024-10-24 12:29:01,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57243 conditions, 18935 events. 13079/18935 cut-off events. For 38584/38584 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 110248 event pairs, 3965 based on Foata normal form. 4/18939 useless extension candidates. Maximal degree in co-relation 57130. Up to 6637 conditions per place. [2024-10-24 12:29:01,493 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 151 selfloop transitions, 31 changer transitions 29/212 dead transitions. [2024-10-24 12:29:01,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 212 transitions, 1734 flow [2024-10-24 12:29:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:29:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:29:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-10-24 12:29:01,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-10-24 12:29:01,495 INFO L175 Difference]: Start difference. First operand has 95 places, 98 transitions, 814 flow. Second operand 6 states and 177 transitions. [2024-10-24 12:29:01,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 212 transitions, 1734 flow [2024-10-24 12:29:01,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 212 transitions, 1718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:29:01,550 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 859 flow [2024-10-24 12:29:01,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=859, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-10-24 12:29:01,551 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-10-24 12:29:01,551 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 859 flow [2024-10-24 12:29:01,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-10-24 12:29:01,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:01,551 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:29:01,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 12:29:01,552 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)] === [2024-10-24 12:29:01,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash 755111324, now seen corresponding path program 2 times [2024-10-24 12:29:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:01,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535440614] [2024-10-24 12:29:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:01,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:29:01,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:01,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535440614] [2024-10-24 12:29:01,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535440614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:01,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:01,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:29:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168279362] [2024-10-24 12:29:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:01,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:29:01,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:29:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:29:01,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:01,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 859 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-24 12:29:01,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:01,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:01,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:04,367 INFO L124 PetriNetUnfolderBase]: 11398/16373 cut-off events. [2024-10-24 12:29:04,368 INFO L125 PetriNetUnfolderBase]: For 44400/44400 co-relation queries the response was YES. [2024-10-24 12:29:04,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52690 conditions, 16373 events. 11398/16373 cut-off events. For 44400/44400 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 90703 event pairs, 4750 based on Foata normal form. 2/16375 useless extension candidates. Maximal degree in co-relation 52655. Up to 15168 conditions per place. [2024-10-24 12:29:04,479 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 108 selfloop transitions, 7 changer transitions 15/131 dead transitions. [2024-10-24 12:29:04,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 1273 flow [2024-10-24 12:29:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:29:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:29:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-10-24 12:29:04,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-10-24 12:29:04,480 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 859 flow. Second operand 4 states and 90 transitions. [2024-10-24 12:29:04,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 1273 flow [2024-10-24 12:29:04,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 131 transitions, 1226 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-10-24 12:29:04,572 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 816 flow [2024-10-24 12:29:04,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=816, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2024-10-24 12:29:04,573 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-10-24 12:29:04,573 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 816 flow [2024-10-24 12:29:04,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-24 12:29:04,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:04,574 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:29:04,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 12:29:04,574 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)] === [2024-10-24 12:29:04,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 938409400, now seen corresponding path program 1 times [2024-10-24 12:29:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:04,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921265940] [2024-10-24 12:29:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:04,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-24 12:29:05,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:05,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921265940] [2024-10-24 12:29:05,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921265940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:05,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:05,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399185714] [2024-10-24 12:29:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:05,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:05,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:05,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:05,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 816 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:29:05,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:05,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:05,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:08,214 INFO L124 PetriNetUnfolderBase]: 11732/16963 cut-off events. [2024-10-24 12:29:08,214 INFO L125 PetriNetUnfolderBase]: For 42246/42246 co-relation queries the response was YES. [2024-10-24 12:29:08,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53407 conditions, 16963 events. 11732/16963 cut-off events. For 42246/42246 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 95367 event pairs, 6728 based on Foata normal form. 36/16999 useless extension candidates. Maximal degree in co-relation 53374. Up to 11970 conditions per place. [2024-10-24 12:29:08,350 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 135 selfloop transitions, 8 changer transitions 18/162 dead transitions. [2024-10-24 12:29:08,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 162 transitions, 1498 flow [2024-10-24 12:29:08,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-10-24 12:29:08,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-10-24 12:29:08,352 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 816 flow. Second operand 5 states and 112 transitions. [2024-10-24 12:29:08,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 162 transitions, 1498 flow [2024-10-24 12:29:08,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 162 transitions, 1452 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-24 12:29:08,424 INFO L231 Difference]: Finished difference. Result has 97 places, 99 transitions, 876 flow [2024-10-24 12:29:08,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=97, PETRI_TRANSITIONS=99} [2024-10-24 12:29:08,425 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-10-24 12:29:08,425 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 99 transitions, 876 flow [2024-10-24 12:29:08,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:29:08,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:08,426 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:29:08,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 12:29:08,426 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)] === [2024-10-24 12:29:08,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:08,426 INFO L85 PathProgramCache]: Analyzing trace with hash -224367562, now seen corresponding path program 2 times [2024-10-24 12:29:08,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:08,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415981396] [2024-10-24 12:29:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:08,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-24 12:29:08,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415981396] [2024-10-24 12:29:08,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415981396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:08,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:08,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:08,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770774198] [2024-10-24 12:29:08,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:08,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:08,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:08,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:08,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:08,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:08,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 99 transitions, 876 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:29:08,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:08,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:08,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:11,731 INFO L124 PetriNetUnfolderBase]: 12026/17420 cut-off events. [2024-10-24 12:29:11,732 INFO L125 PetriNetUnfolderBase]: For 43566/43566 co-relation queries the response was YES. [2024-10-24 12:29:11,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54235 conditions, 17420 events. 12026/17420 cut-off events. For 43566/43566 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 99301 event pairs, 4729 based on Foata normal form. 60/17480 useless extension candidates. Maximal degree in co-relation 54201. Up to 13430 conditions per place. [2024-10-24 12:29:11,894 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 120 selfloop transitions, 16 changer transitions 18/155 dead transitions. [2024-10-24 12:29:11,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 155 transitions, 1412 flow [2024-10-24 12:29:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-10-24 12:29:11,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-10-24 12:29:11,896 INFO L175 Difference]: Start difference. First operand has 97 places, 99 transitions, 876 flow. Second operand 5 states and 114 transitions. [2024-10-24 12:29:11,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 155 transitions, 1412 flow [2024-10-24 12:29:11,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 155 transitions, 1391 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-24 12:29:11,953 INFO L231 Difference]: Finished difference. Result has 99 places, 98 transitions, 890 flow [2024-10-24 12:29:11,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=890, PETRI_PLACES=99, PETRI_TRANSITIONS=98} [2024-10-24 12:29:11,954 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-10-24 12:29:11,954 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 98 transitions, 890 flow [2024-10-24 12:29:11,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:29:11,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:11,955 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:29:11,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 12:29:11,955 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)] === [2024-10-24 12:29:11,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1528361558, now seen corresponding path program 3 times [2024-10-24 12:29:11,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:11,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878807236] [2024-10-24 12:29:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:11,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-24 12:29:12,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878807236] [2024-10-24 12:29:12,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878807236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:12,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:12,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:12,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284533608] [2024-10-24 12:29:12,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:12,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:12,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:12,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:12,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 890 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:29:12,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:12,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:12,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:15,643 INFO L124 PetriNetUnfolderBase]: 11564/16740 cut-off events. [2024-10-24 12:29:15,644 INFO L125 PetriNetUnfolderBase]: For 44058/44058 co-relation queries the response was YES. [2024-10-24 12:29:15,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52661 conditions, 16740 events. 11564/16740 cut-off events. For 44058/44058 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 94166 event pairs, 4423 based on Foata normal form. 36/16776 useless extension candidates. Maximal degree in co-relation 52627. Up to 12939 conditions per place. [2024-10-24 12:29:15,742 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 117 selfloop transitions, 16 changer transitions 17/151 dead transitions. [2024-10-24 12:29:15,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 151 transitions, 1396 flow [2024-10-24 12:29:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-10-24 12:29:15,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-10-24 12:29:15,744 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 890 flow. Second operand 5 states and 112 transitions. [2024-10-24 12:29:15,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 151 transitions, 1396 flow [2024-10-24 12:29:15,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 151 transitions, 1380 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-24 12:29:15,807 INFO L231 Difference]: Finished difference. Result has 102 places, 96 transitions, 911 flow [2024-10-24 12:29:15,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2024-10-24 12:29:15,808 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-10-24 12:29:15,808 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 911 flow [2024-10-24 12:29:15,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:29:15,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:15,808 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:29:15,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 12:29:15,808 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)] === [2024-10-24 12:29:15,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1735169550, now seen corresponding path program 4 times [2024-10-24 12:29:15,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:15,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126359258] [2024-10-24 12:29:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-24 12:29:16,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:16,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126359258] [2024-10-24 12:29:16,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126359258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:16,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:16,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:16,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151213940] [2024-10-24 12:29:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:16,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:16,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:16,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:16,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:16,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:29:16,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:16,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:16,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:20,029 INFO L124 PetriNetUnfolderBase]: 15841/22702 cut-off events. [2024-10-24 12:29:20,029 INFO L125 PetriNetUnfolderBase]: For 63061/63061 co-relation queries the response was YES. [2024-10-24 12:29:20,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71720 conditions, 22702 events. 15841/22702 cut-off events. For 63061/63061 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 132540 event pairs, 5764 based on Foata normal form. 1/22703 useless extension candidates. Maximal degree in co-relation 71684. Up to 10492 conditions per place. [2024-10-24 12:29:20,263 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 148 selfloop transitions, 32 changer transitions 7/188 dead transitions. [2024-10-24 12:29:20,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 188 transitions, 1864 flow [2024-10-24 12:29:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-10-24 12:29:20,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-10-24 12:29:20,265 INFO L175 Difference]: Start difference. First operand has 102 places, 96 transitions, 911 flow. Second operand 5 states and 133 transitions. [2024-10-24 12:29:20,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 188 transitions, 1864 flow [2024-10-24 12:29:20,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 188 transitions, 1836 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-10-24 12:29:20,370 INFO L231 Difference]: Finished difference. Result has 107 places, 113 transitions, 1216 flow [2024-10-24 12:29:20,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1216, PETRI_PLACES=107, PETRI_TRANSITIONS=113} [2024-10-24 12:29:20,372 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-10-24 12:29:20,372 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 113 transitions, 1216 flow [2024-10-24 12:29:20,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:29:20,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:20,373 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:29:20,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 12:29:20,374 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)] === [2024-10-24 12:29:20,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:20,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1994734980, now seen corresponding path program 5 times [2024-10-24 12:29:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:20,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062262330] [2024-10-24 12:29:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:20,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-24 12:29:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062262330] [2024-10-24 12:29:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062262330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:21,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:21,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326099679] [2024-10-24 12:29:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:21,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:21,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:21,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:21,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 113 transitions, 1216 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:29:21,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:21,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:21,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand