./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:40:06,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:40:06,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:40:06,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:40:06,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:40:06,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:40:06,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:40:06,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:40:06,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:40:06,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:40:06,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:40:06,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:40:06,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:40:06,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:40:06,759 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:40:06,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:40:06,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:40:06,760 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:40:06,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:40:06,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:40:06,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:40:06,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:40:06,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:40:06,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:40:06,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:40:06,762 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:40:06,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:40:06,762 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:40:06,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:40:06,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:40:06,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:40:06,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:40:06,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:40:06,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:40:06,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:40:06,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:40:06,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:40:06,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:40:06,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:40:06,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:40:06,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:40:06,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:40:06,766 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-11-09 02:40:06,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:40:06,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:40:06,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:40:06,958 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:40:06,958 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:40:06,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-11-09 02:40:08,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:40:08,481 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:40:08,482 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-11-09 02:40:08,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7138c08/02ee24354eda4cd28f273ecbd9e94a3f/FLAG4a6793517 [2024-11-09 02:40:08,499 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7138c08/02ee24354eda4cd28f273ecbd9e94a3f [2024-11-09 02:40:08,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:40:08,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:40:08,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:40:08,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:40:08,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:40:08,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a53216a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08, skipping insertion in model container [2024-11-09 02:40:08,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:40:08,697 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2767,2780] [2024-11-09 02:40:08,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:40:08,724 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:40:08,749 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2767,2780] [2024-11-09 02:40:08,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:40:08,773 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:40:08,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08 WrapperNode [2024-11-09 02:40:08,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:40:08,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:40:08,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:40:08,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:40:08,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,830 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 270 [2024-11-09 02:40:08,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:40:08,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:40:08,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:40:08,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:40:08,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,875 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [15, 2]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 3 writes are split as follows [3, 0]. [2024-11-09 02:40:08,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:40:08,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:40:08,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:40:08,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:40:08,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (1/1) ... [2024-11-09 02:40:08,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:40:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:08,948 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) [2024-11-09 02:40:08,951 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 [2024-11-09 02:40:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:40:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:40:09,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:40:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:40:09,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:40:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:40:09,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:40:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:40:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:40:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:40:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:40:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:40:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:40:09,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:40:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:40:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:40:09,052 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:40:09,167 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:40:09,170 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:40:09,529 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:40:09,530 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:40:09,762 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:40:09,763 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:40:09,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:40:09 BoogieIcfgContainer [2024-11-09 02:40:09,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:40:09,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:40:09,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:40:09,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:40:09,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:40:08" (1/3) ... [2024-11-09 02:40:09,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e3bbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:40:09, skipping insertion in model container [2024-11-09 02:40:09,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:08" (2/3) ... [2024-11-09 02:40:09,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e3bbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:40:09, skipping insertion in model container [2024-11-09 02:40:09,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:40:09" (3/3) ... [2024-11-09 02:40:09,774 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-11-09 02:40:09,788 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:40:09,789 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:40:09,789 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:40:09,832 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:40:09,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-11-09 02:40:09,891 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-11-09 02:40:09,891 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:40:09,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-09 02:40:09,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-11-09 02:40:09,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-11-09 02:40:09,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:40:09,918 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;@964dad2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:40:09,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:40:09,936 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:40:09,936 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-11-09 02:40:09,936 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:40:09,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:09,937 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] [2024-11-09 02:40:09,938 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)] === [2024-11-09 02:40:09,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1791323821, now seen corresponding path program 1 times [2024-11-09 02:40:09,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:09,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322721186] [2024-11-09 02:40:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:09,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:10,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:10,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322721186] [2024-11-09 02:40:10,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322721186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:10,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:10,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:40:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912849848] [2024-11-09 02:40:10,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:10,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:40:10,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:10,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:40:10,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:40:10,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:10,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:10,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:10,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:10,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:11,271 INFO L124 PetriNetUnfolderBase]: 2897/3947 cut-off events. [2024-11-09 02:40:11,271 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-11-09 02:40:11,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8176 conditions, 3947 events. 2897/3947 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16746 event pairs, 254 based on Foata normal form. 1/2840 useless extension candidates. Maximal degree in co-relation 5265. Up to 1295 conditions per place. [2024-11-09 02:40:11,293 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 122 selfloop transitions, 13 changer transitions 2/138 dead transitions. [2024-11-09 02:40:11,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 138 transitions, 622 flow [2024-11-09 02:40:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:40:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:40:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-11-09 02:40:11,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-09 02:40:11,304 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 9 states and 174 transitions. [2024-11-09 02:40:11,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 138 transitions, 622 flow [2024-11-09 02:40:11,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 138 transitions, 574 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:40:11,319 INFO L231 Difference]: Finished difference. Result has 42 places, 49 transitions, 156 flow [2024-11-09 02:40:11,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=49} [2024-11-09 02:40:11,323 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-11-09 02:40:11,323 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 49 transitions, 156 flow [2024-11-09 02:40:11,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:11,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:11,324 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] [2024-11-09 02:40:11,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:40:11,324 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)] === [2024-11-09 02:40:11,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:11,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1504680807, now seen corresponding path program 2 times [2024-11-09 02:40:11,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273092254] [2024-11-09 02:40:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:11,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:11,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:11,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273092254] [2024-11-09 02:40:11,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273092254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:11,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:11,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:40:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973524383] [2024-11-09 02:40:11,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:11,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:40:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:11,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:40:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:40:11,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:11,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:11,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:11,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:11,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:11,997 INFO L124 PetriNetUnfolderBase]: 3338/4609 cut-off events. [2024-11-09 02:40:11,997 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-11-09 02:40:12,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10154 conditions, 4609 events. 3338/4609 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20971 event pairs, 339 based on Foata normal form. 1/3781 useless extension candidates. Maximal degree in co-relation 7203. Up to 1443 conditions per place. [2024-11-09 02:40:12,015 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 124 selfloop transitions, 15 changer transitions 2/142 dead transitions. [2024-11-09 02:40:12,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 142 transitions, 655 flow [2024-11-09 02:40:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:40:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:40:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-11-09 02:40:12,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-09 02:40:12,017 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 156 flow. Second operand 9 states and 176 transitions. [2024-11-09 02:40:12,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 142 transitions, 655 flow [2024-11-09 02:40:12,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 142 transitions, 653 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 02:40:12,021 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 218 flow [2024-11-09 02:40:12,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-11-09 02:40:12,022 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-11-09 02:40:12,022 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 218 flow [2024-11-09 02:40:12,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:12,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:12,022 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:12,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:40:12,022 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)] === [2024-11-09 02:40:12,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:12,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1891129723, now seen corresponding path program 1 times [2024-11-09 02:40:12,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:12,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24716757] [2024-11-09 02:40:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:12,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:12,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:12,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24716757] [2024-11-09 02:40:12,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24716757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:12,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054548083] [2024-11-09 02:40:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:12,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:12,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:12,168 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) [2024-11-09 02:40:12,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:40:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:12,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:40:12,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:12,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:12,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054548083] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:12,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:40:12,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2024-11-09 02:40:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108879324] [2024-11-09 02:40:12,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:12,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:40:12,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:40:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:40:12,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:12,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:12,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:12,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:12,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:13,249 INFO L124 PetriNetUnfolderBase]: 4570/6299 cut-off events. [2024-11-09 02:40:13,249 INFO L125 PetriNetUnfolderBase]: For 2968/2968 co-relation queries the response was YES. [2024-11-09 02:40:13,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14766 conditions, 6299 events. 4570/6299 cut-off events. For 2968/2968 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 27897 event pairs, 2476 based on Foata normal form. 1/5189 useless extension candidates. Maximal degree in co-relation 10928. Up to 3282 conditions per place. [2024-11-09 02:40:13,267 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 119 selfloop transitions, 8 changer transitions 3/131 dead transitions. [2024-11-09 02:40:13,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 131 transitions, 693 flow [2024-11-09 02:40:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:40:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:40:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-11-09 02:40:13,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-11-09 02:40:13,269 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 218 flow. Second operand 7 states and 145 transitions. [2024-11-09 02:40:13,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 131 transitions, 693 flow [2024-11-09 02:40:13,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 676 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 02:40:13,276 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 247 flow [2024-11-09 02:40:13,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-11-09 02:40:13,277 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-11-09 02:40:13,277 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 247 flow [2024-11-09 02:40:13,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:13,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:13,277 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:13,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:40:13,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:13,482 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)] === [2024-11-09 02:40:13,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash 421060979, now seen corresponding path program 1 times [2024-11-09 02:40:13,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:13,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147352750] [2024-11-09 02:40:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:13,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147352750] [2024-11-09 02:40:13,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147352750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:13,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:13,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:13,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948170042] [2024-11-09 02:40:13,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:13,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:13,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:13,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:13,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:13,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:13,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:13,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:14,139 INFO L124 PetriNetUnfolderBase]: 5454/7667 cut-off events. [2024-11-09 02:40:14,140 INFO L125 PetriNetUnfolderBase]: For 4057/4057 co-relation queries the response was YES. [2024-11-09 02:40:14,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18768 conditions, 7667 events. 5454/7667 cut-off events. For 4057/4057 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37517 event pairs, 2454 based on Foata normal form. 0/6755 useless extension candidates. Maximal degree in co-relation 15490. Up to 4606 conditions per place. [2024-11-09 02:40:14,168 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 99 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-11-09 02:40:14,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 111 transitions, 664 flow [2024-11-09 02:40:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-11-09 02:40:14,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-11-09 02:40:14,169 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 247 flow. Second operand 5 states and 99 transitions. [2024-11-09 02:40:14,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 111 transitions, 664 flow [2024-11-09 02:40:14,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 653 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 02:40:14,180 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 328 flow [2024-11-09 02:40:14,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-09 02:40:14,181 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2024-11-09 02:40:14,181 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 328 flow [2024-11-09 02:40:14,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:14,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:14,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:14,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:40:14,181 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)] === [2024-11-09 02:40:14,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:14,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1385803279, now seen corresponding path program 1 times [2024-11-09 02:40:14,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:14,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702647199] [2024-11-09 02:40:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:14,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:14,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:14,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702647199] [2024-11-09 02:40:14,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702647199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:14,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:14,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:40:14,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861122212] [2024-11-09 02:40:14,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:14,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:14,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:14,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:14,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:14,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:14,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:14,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:14,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:14,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:14,939 INFO L124 PetriNetUnfolderBase]: 3800/5442 cut-off events. [2024-11-09 02:40:14,939 INFO L125 PetriNetUnfolderBase]: For 4113/4113 co-relation queries the response was YES. [2024-11-09 02:40:14,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13680 conditions, 5442 events. 3800/5442 cut-off events. For 4113/4113 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 26355 event pairs, 1572 based on Foata normal form. 0/5057 useless extension candidates. Maximal degree in co-relation 10643. Up to 2570 conditions per place. [2024-11-09 02:40:14,966 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 6 changer transitions 5/99 dead transitions. [2024-11-09 02:40:14,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 600 flow [2024-11-09 02:40:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-11-09 02:40:14,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-11-09 02:40:14,970 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 328 flow. Second operand 5 states and 104 transitions. [2024-11-09 02:40:14,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 600 flow [2024-11-09 02:40:14,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 572 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-09 02:40:14,982 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 255 flow [2024-11-09 02:40:14,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-09 02:40:14,986 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-11-09 02:40:14,986 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 255 flow [2024-11-09 02:40:14,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:14,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:14,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:14,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:40:14,989 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)] === [2024-11-09 02:40:14,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash -139095454, now seen corresponding path program 1 times [2024-11-09 02:40:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245580010] [2024-11-09 02:40:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:40:15,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:15,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245580010] [2024-11-09 02:40:15,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245580010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:15,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:15,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 02:40:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793661541] [2024-11-09 02:40:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:15,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:40:15,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:40:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:40:15,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:15,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:15,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:15,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:15,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:15,659 INFO L124 PetriNetUnfolderBase]: 3820/5452 cut-off events. [2024-11-09 02:40:15,660 INFO L125 PetriNetUnfolderBase]: For 3238/3238 co-relation queries the response was YES. [2024-11-09 02:40:15,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 5452 events. 3820/5452 cut-off events. For 3238/3238 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26046 event pairs, 1320 based on Foata normal form. 2/5069 useless extension candidates. Maximal degree in co-relation 11209. Up to 2527 conditions per place. [2024-11-09 02:40:15,678 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 83 selfloop transitions, 5 changer transitions 59/148 dead transitions. [2024-11-09 02:40:15,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 148 transitions, 796 flow [2024-11-09 02:40:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:40:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:40:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-11-09 02:40:15,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-09 02:40:15,679 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 255 flow. Second operand 8 states and 170 transitions. [2024-11-09 02:40:15,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 148 transitions, 796 flow [2024-11-09 02:40:15,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 148 transitions, 783 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 02:40:15,687 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 239 flow [2024-11-09 02:40:15,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-11-09 02:40:15,689 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-11-09 02:40:15,689 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 239 flow [2024-11-09 02:40:15,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:15,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:15,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:15,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:40:15,691 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)] === [2024-11-09 02:40:15,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash 49833286, now seen corresponding path program 2 times [2024-11-09 02:40:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:15,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339987498] [2024-11-09 02:40:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:40:15,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:15,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339987498] [2024-11-09 02:40:15,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339987498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:15,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:15,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 02:40:15,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994008552] [2024-11-09 02:40:15,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:15,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:40:15,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:40:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:40:15,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:15,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:15,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:15,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:15,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:16,448 INFO L124 PetriNetUnfolderBase]: 4178/5966 cut-off events. [2024-11-09 02:40:16,448 INFO L125 PetriNetUnfolderBase]: For 4106/4106 co-relation queries the response was YES. [2024-11-09 02:40:16,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15142 conditions, 5966 events. 4178/5966 cut-off events. For 4106/4106 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 28721 event pairs, 1704 based on Foata normal form. 2/5556 useless extension candidates. Maximal degree in co-relation 15093. Up to 2527 conditions per place. [2024-11-09 02:40:16,471 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 102 selfloop transitions, 6 changer transitions 44/153 dead transitions. [2024-11-09 02:40:16,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 153 transitions, 868 flow [2024-11-09 02:40:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:40:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:40:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-11-09 02:40:16,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540625 [2024-11-09 02:40:16,472 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 239 flow. Second operand 8 states and 173 transitions. [2024-11-09 02:40:16,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 153 transitions, 868 flow [2024-11-09 02:40:16,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 817 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-11-09 02:40:16,483 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 255 flow [2024-11-09 02:40:16,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-09 02:40:16,483 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-11-09 02:40:16,484 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 255 flow [2024-11-09 02:40:16,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:16,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:16,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:16,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:40:16,484 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)] === [2024-11-09 02:40:16,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -808810084, now seen corresponding path program 3 times [2024-11-09 02:40:16,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169802936] [2024-11-09 02:40:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:16,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:40:16,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:16,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169802936] [2024-11-09 02:40:16,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169802936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:16,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:16,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 02:40:16,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516279549] [2024-11-09 02:40:16,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:16,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:40:16,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:16,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:40:16,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:40:16,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:16,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:16,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:16,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:16,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:17,169 INFO L124 PetriNetUnfolderBase]: 3860/5517 cut-off events. [2024-11-09 02:40:17,169 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2024-11-09 02:40:17,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14278 conditions, 5517 events. 3860/5517 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25817 event pairs, 1745 based on Foata normal form. 2/5129 useless extension candidates. Maximal degree in co-relation 14240. Up to 2527 conditions per place. [2024-11-09 02:40:17,186 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 82 selfloop transitions, 5 changer transitions 58/146 dead transitions. [2024-11-09 02:40:17,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 821 flow [2024-11-09 02:40:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:40:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:40:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-11-09 02:40:17,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-09 02:40:17,188 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 255 flow. Second operand 8 states and 168 transitions. [2024-11-09 02:40:17,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 821 flow [2024-11-09 02:40:17,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 146 transitions, 794 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-09 02:40:17,199 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 259 flow [2024-11-09 02:40:17,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=259, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-11-09 02:40:17,199 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-11-09 02:40:17,199 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 259 flow [2024-11-09 02:40:17,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:17,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:17,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:17,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:40:17,200 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)] === [2024-11-09 02:40:17,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1596420867, now seen corresponding path program 1 times [2024-11-09 02:40:17,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:17,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551142318] [2024-11-09 02:40:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:17,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:40:17,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:17,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551142318] [2024-11-09 02:40:17,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551142318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:17,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:17,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 02:40:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922249574] [2024-11-09 02:40:17,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:17,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:40:17,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:17,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:40:17,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:40:17,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:17,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:17,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:17,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:17,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:18,417 INFO L124 PetriNetUnfolderBase]: 9020/12758 cut-off events. [2024-11-09 02:40:18,418 INFO L125 PetriNetUnfolderBase]: For 9668/9668 co-relation queries the response was YES. [2024-11-09 02:40:18,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32257 conditions, 12758 events. 9020/12758 cut-off events. For 9668/9668 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 68410 event pairs, 2572 based on Foata normal form. 4/11712 useless extension candidates. Maximal degree in co-relation 32182. Up to 3835 conditions per place. [2024-11-09 02:40:18,453 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 160 selfloop transitions, 28 changer transitions 11/200 dead transitions. [2024-11-09 02:40:18,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 200 transitions, 1255 flow [2024-11-09 02:40:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:40:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:40:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-09 02:40:18,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-09 02:40:18,454 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 259 flow. Second operand 9 states and 184 transitions. [2024-11-09 02:40:18,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 200 transitions, 1255 flow [2024-11-09 02:40:18,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 200 transitions, 1209 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-09 02:40:18,473 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 522 flow [2024-11-09 02:40:18,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=522, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-11-09 02:40:18,474 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-11-09 02:40:18,474 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 522 flow [2024-11-09 02:40:18,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:18,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:18,474 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:18,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:40:18,475 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)] === [2024-11-09 02:40:18,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 89447332, now seen corresponding path program 1 times [2024-11-09 02:40:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945372123] [2024-11-09 02:40:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:18,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:40:18,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945372123] [2024-11-09 02:40:18,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945372123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794966047] [2024-11-09 02:40:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:18,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:18,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:18,582 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) [2024-11-09 02:40:18,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:40:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:18,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:40:18,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:40:18,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:40:18,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794966047] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:18,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:40:18,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2024-11-09 02:40:18,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053858873] [2024-11-09 02:40:18,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:18,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:40:18,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:40:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:40:18,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:18,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:18,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:18,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:18,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:19,779 INFO L124 PetriNetUnfolderBase]: 8062/11384 cut-off events. [2024-11-09 02:40:19,779 INFO L125 PetriNetUnfolderBase]: For 14152/14152 co-relation queries the response was YES. [2024-11-09 02:40:19,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32080 conditions, 11384 events. 8062/11384 cut-off events. For 14152/14152 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 60124 event pairs, 3041 based on Foata normal form. 2/11022 useless extension candidates. Maximal degree in co-relation 27805. Up to 5226 conditions per place. [2024-11-09 02:40:19,836 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 152 selfloop transitions, 28 changer transitions 8/189 dead transitions. [2024-11-09 02:40:19,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 189 transitions, 1270 flow [2024-11-09 02:40:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:40:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:40:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-11-09 02:40:19,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553125 [2024-11-09 02:40:19,838 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 522 flow. Second operand 8 states and 177 transitions. [2024-11-09 02:40:19,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 189 transitions, 1270 flow [2024-11-09 02:40:19,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 189 transitions, 1268 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 02:40:19,887 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 592 flow [2024-11-09 02:40:19,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=592, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-09 02:40:19,888 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-11-09 02:40:19,888 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 592 flow [2024-11-09 02:40:19,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:19,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:19,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:19,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:40:20,089 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,SelfDestructingSolverStorable9 [2024-11-09 02:40:20,090 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)] === [2024-11-09 02:40:20,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1253818341, now seen corresponding path program 2 times [2024-11-09 02:40:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:20,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829545235] [2024-11-09 02:40:20,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:20,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:40:20,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:20,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829545235] [2024-11-09 02:40:20,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829545235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:20,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:20,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 02:40:20,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898432436] [2024-11-09 02:40:20,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:20,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:40:20,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:40:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:40:20,235 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:20,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:20,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:20,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:20,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:21,838 INFO L124 PetriNetUnfolderBase]: 13193/18642 cut-off events. [2024-11-09 02:40:21,838 INFO L125 PetriNetUnfolderBase]: For 25472/25472 co-relation queries the response was YES. [2024-11-09 02:40:21,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53251 conditions, 18642 events. 13193/18642 cut-off events. For 25472/25472 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 105917 event pairs, 2626 based on Foata normal form. 2/18038 useless extension candidates. Maximal degree in co-relation 48752. Up to 4686 conditions per place. [2024-11-09 02:40:21,959 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 209 selfloop transitions, 28 changer transitions 17/255 dead transitions. [2024-11-09 02:40:21,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 255 transitions, 2058 flow [2024-11-09 02:40:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:40:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:40:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-11-09 02:40:21,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-09 02:40:21,961 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 592 flow. Second operand 10 states and 204 transitions. [2024-11-09 02:40:21,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 255 transitions, 2058 flow [2024-11-09 02:40:22,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 255 transitions, 1975 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-09 02:40:22,071 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 836 flow [2024-11-09 02:40:22,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=836, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-11-09 02:40:22,071 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 61 predicate places. [2024-11-09 02:40:22,071 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 836 flow [2024-11-09 02:40:22,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:22,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:22,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:22,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:40:22,072 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)] === [2024-11-09 02:40:22,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash -138598625, now seen corresponding path program 3 times [2024-11-09 02:40:22,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431745853] [2024-11-09 02:40:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:40:22,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:22,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431745853] [2024-11-09 02:40:22,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431745853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:22,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:22,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 02:40:22,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585651544] [2024-11-09 02:40:22,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:22,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:40:22,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:22,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:40:22,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:40:22,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:22,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 836 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:22,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:22,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:22,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:23,909 INFO L124 PetriNetUnfolderBase]: 12401/17537 cut-off events. [2024-11-09 02:40:23,910 INFO L125 PetriNetUnfolderBase]: For 31675/31675 co-relation queries the response was YES. [2024-11-09 02:40:23,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54180 conditions, 17537 events. 12401/17537 cut-off events. For 31675/31675 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 98554 event pairs, 4094 based on Foata normal form. 2/16987 useless extension candidates. Maximal degree in co-relation 42041. Up to 5047 conditions per place. [2024-11-09 02:40:23,997 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 177 selfloop transitions, 32 changer transitions 24/234 dead transitions. [2024-11-09 02:40:23,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 234 transitions, 2021 flow [2024-11-09 02:40:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:40:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:40:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-11-09 02:40:23,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2024-11-09 02:40:23,998 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 836 flow. Second operand 9 states and 187 transitions. [2024-11-09 02:40:23,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 234 transitions, 2021 flow [2024-11-09 02:40:24,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 234 transitions, 1994 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-09 02:40:24,109 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 1065 flow [2024-11-09 02:40:24,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1065, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-11-09 02:40:24,110 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 70 predicate places. [2024-11-09 02:40:24,110 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 1065 flow [2024-11-09 02:40:24,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:24,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:24,111 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] [2024-11-09 02:40:24,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:40:24,111 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)] === [2024-11-09 02:40:24,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash -625530116, now seen corresponding path program 1 times [2024-11-09 02:40:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111421327] [2024-11-09 02:40:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:24,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111421327] [2024-11-09 02:40:24,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111421327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:24,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:24,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506598845] [2024-11-09 02:40:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:24,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:24,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:24,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 1065 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) [2024-11-09 02:40:24,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:24,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:24,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:26,680 INFO L124 PetriNetUnfolderBase]: 19330/27117 cut-off events. [2024-11-09 02:40:26,680 INFO L125 PetriNetUnfolderBase]: For 57225/57225 co-relation queries the response was YES. [2024-11-09 02:40:27,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84749 conditions, 27117 events. 19330/27117 cut-off events. For 57225/57225 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 162437 event pairs, 2695 based on Foata normal form. 1/26336 useless extension candidates. Maximal degree in co-relation 76128. Up to 12299 conditions per place. [2024-11-09 02:40:27,061 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 194 selfloop transitions, 36 changer transitions 1/232 dead transitions. [2024-11-09 02:40:27,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 232 transitions, 2460 flow [2024-11-09 02:40:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:40:27,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:40:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-09 02:40:27,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-09 02:40:27,064 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 1065 flow. Second operand 6 states and 130 transitions. [2024-11-09 02:40:27,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 232 transitions, 2460 flow [2024-11-09 02:40:27,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 232 transitions, 2249 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-11-09 02:40:27,425 INFO L231 Difference]: Finished difference. Result has 108 places, 136 transitions, 1369 flow [2024-11-09 02:40:27,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1369, PETRI_PLACES=108, PETRI_TRANSITIONS=136} [2024-11-09 02:40:27,426 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 71 predicate places. [2024-11-09 02:40:27,427 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 136 transitions, 1369 flow [2024-11-09 02:40:27,427 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) [2024-11-09 02:40:27,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:27,427 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] [2024-11-09 02:40:27,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:40:27,428 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)] === [2024-11-09 02:40:27,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1016759300, now seen corresponding path program 2 times [2024-11-09 02:40:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:27,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667305086] [2024-11-09 02:40:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:27,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:27,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667305086] [2024-11-09 02:40:27,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667305086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:27,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:27,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:27,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250138315] [2024-11-09 02:40:27,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:27,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:27,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:27,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:27,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:27,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:27,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 136 transitions, 1369 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) [2024-11-09 02:40:27,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:27,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:27,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:30,780 INFO L124 PetriNetUnfolderBase]: 24550/34194 cut-off events. [2024-11-09 02:40:30,781 INFO L125 PetriNetUnfolderBase]: For 77719/77719 co-relation queries the response was YES. [2024-11-09 02:40:31,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112626 conditions, 34194 events. 24550/34194 cut-off events. For 77719/77719 co-relation queries the response was YES. Maximal size of possible extension queue 1607. Compared 209269 event pairs, 3653 based on Foata normal form. 1/34191 useless extension candidates. Maximal degree in co-relation 94597. Up to 17017 conditions per place. [2024-11-09 02:40:31,093 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 190 selfloop transitions, 54 changer transitions 1/246 dead transitions. [2024-11-09 02:40:31,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 246 transitions, 2640 flow [2024-11-09 02:40:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:40:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:40:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-09 02:40:31,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-09 02:40:31,094 INFO L175 Difference]: Start difference. First operand has 108 places, 136 transitions, 1369 flow. Second operand 6 states and 132 transitions. [2024-11-09 02:40:31,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 246 transitions, 2640 flow [2024-11-09 02:40:31,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 246 transitions, 2612 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-11-09 02:40:31,660 INFO L231 Difference]: Finished difference. Result has 116 places, 162 transitions, 1878 flow [2024-11-09 02:40:31,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1878, PETRI_PLACES=116, PETRI_TRANSITIONS=162} [2024-11-09 02:40:31,663 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 79 predicate places. [2024-11-09 02:40:31,663 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 162 transitions, 1878 flow [2024-11-09 02:40:31,664 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) [2024-11-09 02:40:31,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:31,664 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] [2024-11-09 02:40:31,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 02:40:31,664 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)] === [2024-11-09 02:40:31,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1955319854, now seen corresponding path program 3 times [2024-11-09 02:40:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:31,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489970062] [2024-11-09 02:40:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:31,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:31,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:31,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489970062] [2024-11-09 02:40:31,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489970062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:31,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:31,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:31,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918611708] [2024-11-09 02:40:31,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:31,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:31,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:31,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:31,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 162 transitions, 1878 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) [2024-11-09 02:40:31,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:31,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:31,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:35,131 INFO L124 PetriNetUnfolderBase]: 27255/38058 cut-off events. [2024-11-09 02:40:35,131 INFO L125 PetriNetUnfolderBase]: For 116117/116117 co-relation queries the response was YES. [2024-11-09 02:40:35,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131495 conditions, 38058 events. 27255/38058 cut-off events. For 116117/116117 co-relation queries the response was YES. Maximal size of possible extension queue 1760. Compared 235397 event pairs, 4855 based on Foata normal form. 1/38055 useless extension candidates. Maximal degree in co-relation 111883. Up to 20061 conditions per place. [2024-11-09 02:40:35,411 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 131 selfloop transitions, 122 changer transitions 1/255 dead transitions. [2024-11-09 02:40:35,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 255 transitions, 2963 flow [2024-11-09 02:40:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:40:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:40:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-11-09 02:40:35,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-09 02:40:35,413 INFO L175 Difference]: Start difference. First operand has 116 places, 162 transitions, 1878 flow. Second operand 6 states and 128 transitions. [2024-11-09 02:40:35,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 255 transitions, 2963 flow [2024-11-09 02:40:36,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 255 transitions, 2901 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:36,058 INFO L231 Difference]: Finished difference. Result has 122 places, 192 transitions, 2538 flow [2024-11-09 02:40:36,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2538, PETRI_PLACES=122, PETRI_TRANSITIONS=192} [2024-11-09 02:40:36,060 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 85 predicate places. [2024-11-09 02:40:36,060 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 192 transitions, 2538 flow [2024-11-09 02:40:36,060 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) [2024-11-09 02:40:36,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:36,061 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] [2024-11-09 02:40:36,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 02:40:36,061 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)] === [2024-11-09 02:40:36,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:36,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1195890472, now seen corresponding path program 4 times [2024-11-09 02:40:36,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:36,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553956266] [2024-11-09 02:40:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:36,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:36,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:36,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553956266] [2024-11-09 02:40:36,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553956266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:36,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:36,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:36,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596249121] [2024-11-09 02:40:36,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:36,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:36,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:36,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:36,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 192 transitions, 2538 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) [2024-11-09 02:40:36,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:36,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:36,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:40,844 INFO L124 PetriNetUnfolderBase]: 29533/41558 cut-off events. [2024-11-09 02:40:40,844 INFO L125 PetriNetUnfolderBase]: For 168362/168362 co-relation queries the response was YES. [2024-11-09 02:40:41,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151802 conditions, 41558 events. 29533/41558 cut-off events. For 168362/168362 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 261907 event pairs, 4763 based on Foata normal form. 1/41555 useless extension candidates. Maximal degree in co-relation 127118. Up to 16230 conditions per place. [2024-11-09 02:40:41,343 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 242 selfloop transitions, 63 changer transitions 1/307 dead transitions. [2024-11-09 02:40:41,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 307 transitions, 4299 flow [2024-11-09 02:40:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:40:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:40:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-09 02:40:41,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-09 02:40:41,345 INFO L175 Difference]: Start difference. First operand has 122 places, 192 transitions, 2538 flow. Second operand 6 states and 126 transitions. [2024-11-09 02:40:41,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 307 transitions, 4299 flow [2024-11-09 02:40:42,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 307 transitions, 4237 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:42,655 INFO L231 Difference]: Finished difference. Result has 128 places, 211 transitions, 3015 flow [2024-11-09 02:40:42,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3015, PETRI_PLACES=128, PETRI_TRANSITIONS=211} [2024-11-09 02:40:42,656 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 91 predicate places. [2024-11-09 02:40:42,656 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 211 transitions, 3015 flow [2024-11-09 02:40:42,656 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) [2024-11-09 02:40:42,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:42,656 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] [2024-11-09 02:40:42,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 02:40:42,657 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)] === [2024-11-09 02:40:42,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1671834696, now seen corresponding path program 5 times [2024-11-09 02:40:42,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:42,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141435460] [2024-11-09 02:40:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:42,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:42,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:42,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141435460] [2024-11-09 02:40:42,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141435460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:42,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:42,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:42,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049165976] [2024-11-09 02:40:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:42,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:42,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:42,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 211 transitions, 3015 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) [2024-11-09 02:40:42,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:42,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:42,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:47,074 INFO L124 PetriNetUnfolderBase]: 29533/41556 cut-off events. [2024-11-09 02:40:47,074 INFO L125 PetriNetUnfolderBase]: For 208346/208346 co-relation queries the response was YES. [2024-11-09 02:40:47,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159761 conditions, 41556 events. 29533/41556 cut-off events. For 208346/208346 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 264944 event pairs, 3993 based on Foata normal form. 1/41553 useless extension candidates. Maximal degree in co-relation 141474. Up to 17893 conditions per place. [2024-11-09 02:40:47,543 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 155 selfloop transitions, 139 changer transitions 1/296 dead transitions. [2024-11-09 02:40:47,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 296 transitions, 4226 flow [2024-11-09 02:40:47,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:40:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:40:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-09 02:40:47,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-09 02:40:47,545 INFO L175 Difference]: Start difference. First operand has 128 places, 211 transitions, 3015 flow. Second operand 6 states and 130 transitions. [2024-11-09 02:40:47,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 296 transitions, 4226 flow [2024-11-09 02:40:48,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 296 transitions, 4158 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:48,902 INFO L231 Difference]: Finished difference. Result has 135 places, 229 transitions, 3678 flow [2024-11-09 02:40:48,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3678, PETRI_PLACES=135, PETRI_TRANSITIONS=229} [2024-11-09 02:40:48,903 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 98 predicate places. [2024-11-09 02:40:48,903 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 229 transitions, 3678 flow [2024-11-09 02:40:48,903 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) [2024-11-09 02:40:48,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:48,903 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] [2024-11-09 02:40:48,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 02:40:48,904 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)] === [2024-11-09 02:40:48,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash -733274142, now seen corresponding path program 6 times [2024-11-09 02:40:48,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:48,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410887846] [2024-11-09 02:40:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:48,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:48,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:48,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410887846] [2024-11-09 02:40:48,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410887846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:48,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:48,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:48,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295370493] [2024-11-09 02:40:48,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:48,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:48,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:48,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:48,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 229 transitions, 3678 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) [2024-11-09 02:40:48,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:48,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:48,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:53,088 INFO L124 PetriNetUnfolderBase]: 29533/41554 cut-off events. [2024-11-09 02:40:53,088 INFO L125 PetriNetUnfolderBase]: For 252874/252874 co-relation queries the response was YES. [2024-11-09 02:40:53,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166218 conditions, 41554 events. 29533/41554 cut-off events. For 252874/252874 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 262476 event pairs, 5189 based on Foata normal form. 1/41551 useless extension candidates. Maximal degree in co-relation 149543. Up to 16074 conditions per place. [2024-11-09 02:40:53,803 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 211 selfloop transitions, 110 changer transitions 1/323 dead transitions. [2024-11-09 02:40:53,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 323 transitions, 5243 flow [2024-11-09 02:40:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:40:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:40:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-09 02:40:53,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-09 02:40:53,805 INFO L175 Difference]: Start difference. First operand has 135 places, 229 transitions, 3678 flow. Second operand 6 states and 126 transitions. [2024-11-09 02:40:53,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 323 transitions, 5243 flow [2024-11-09 02:40:55,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 323 transitions, 5029 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:55,269 INFO L231 Difference]: Finished difference. Result has 141 places, 264 transitions, 4592 flow [2024-11-09 02:40:55,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4592, PETRI_PLACES=141, PETRI_TRANSITIONS=264} [2024-11-09 02:40:55,269 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 104 predicate places. [2024-11-09 02:40:55,270 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 264 transitions, 4592 flow [2024-11-09 02:40:55,270 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) [2024-11-09 02:40:55,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:55,270 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] [2024-11-09 02:40:55,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 02:40:55,270 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)] === [2024-11-09 02:40:55,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:55,270 INFO L85 PathProgramCache]: Analyzing trace with hash -376576011, now seen corresponding path program 1 times [2024-11-09 02:40:55,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:55,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314653187] [2024-11-09 02:40:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:55,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:55,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:55,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314653187] [2024-11-09 02:40:55,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314653187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:55,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147342349] [2024-11-09 02:40:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:55,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:55,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:55,406 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) [2024-11-09 02:40:55,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:40:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:55,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 02:40:55,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:55,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:55,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147342349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:40:55,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:40:55,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:40:55,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530975841] [2024-11-09 02:40:55,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:40:55,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:40:55,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:55,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:40:55,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:40:55,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-09 02:40:55,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 264 transitions, 4592 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:55,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:55,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-09 02:40:55,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand