./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-subst.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-chromosome-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:40:24,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:40:24,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:40:24,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:40:24,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:40:24,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:40:24,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:40:24,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:40:24,911 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:40:24,912 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:40:24,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:40:24,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:40:24,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:40:24,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:40:24,916 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:40:24,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:40:24,917 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:40:24,917 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:40:24,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:40:24,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:40:24,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:40:24,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:40:24,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:40:24,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:40:24,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:40:24,923 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:40:24,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:40:24,924 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:40:24,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:40:24,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:40:24,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:40:24,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:40:24,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:40:24,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:40:24,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:40:24,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:40:24,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:40:24,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:40:24,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:40:24,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:40:24,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:40:24,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:40:24,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c [2024-11-09 02:40:25,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:40:25,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:40:25,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:40:25,234 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:40:25,235 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:40:25,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2024-11-09 02:40:26,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:40:26,869 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:40:26,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2024-11-09 02:40:26,877 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54b5baa21/833fdb02f7e34a63b137db13ce15349e/FLAG16102f426 [2024-11-09 02:40:26,888 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54b5baa21/833fdb02f7e34a63b137db13ce15349e [2024-11-09 02:40:26,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:40:26,891 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:40:26,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:40:26,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:40:26,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:40:26,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:40:26" (1/1) ... [2024-11-09 02:40:26,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebd93c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:26, skipping insertion in model container [2024-11-09 02:40:26,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:40:26" (1/1) ... [2024-11-09 02:40:26,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:40:27,139 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-chromosome-subst.wvr.c[3136,3149] [2024-11-09 02:40:27,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:40:27,159 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:40:27,181 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-chromosome-subst.wvr.c[3136,3149] [2024-11-09 02:40:27,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:40:27,202 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:40:27,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27 WrapperNode [2024-11-09 02:40:27,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:40:27,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:40:27,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:40:27,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:40:27,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,249 INFO L138 Inliner]: procedures = 25, calls = 32, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 271 [2024-11-09 02:40:27,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:40:27,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:40:27,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:40:27,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:40:27,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,290 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 02:40:27,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:40:27,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:40:27,319 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:40:27,319 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:40:27,320 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (1/1) ... [2024-11-09 02:40:27,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:40:27,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:27,352 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 02:40:27,354 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 02:40:27,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:40:27,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:40:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:40:27,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:40:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:40:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:40:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:40:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:40:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:40:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:40:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:40:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:40:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:40:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:40:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:40:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:40:27,397 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 02:40:27,502 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:40:27,504 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:40:27,974 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:40:27,974 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:40:28,353 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:40:28,354 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:40:28,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:40:28 BoogieIcfgContainer [2024-11-09 02:40:28,354 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:40:28,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:40:28,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:40:28,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:40:28,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:40:26" (1/3) ... [2024-11-09 02:40:28,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efeec8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:40:28, skipping insertion in model container [2024-11-09 02:40:28,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:40:27" (2/3) ... [2024-11-09 02:40:28,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efeec8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:40:28, skipping insertion in model container [2024-11-09 02:40:28,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:40:28" (3/3) ... [2024-11-09 02:40:28,362 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2024-11-09 02:40:28,379 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:40:28,379 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:40:28,379 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:40:28,437 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:40:28,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-11-09 02:40:28,503 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-09 02:40:28,504 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:40:28,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-11-09 02:40:28,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-11-09 02:40:28,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-11-09 02:40:28,523 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:40:28,528 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;@fec6351, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:40:28,528 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:40:28,537 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:40:28,538 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-09 02:40:28,538 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:40:28,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:28,538 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] [2024-11-09 02:40:28,539 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 02:40:28,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:28,546 INFO L85 PathProgramCache]: Analyzing trace with hash 931474529, now seen corresponding path program 1 times [2024-11-09 02:40:28,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:28,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858261138] [2024-11-09 02:40:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:28,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:29,015 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 02:40:29,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858261138] [2024-11-09 02:40:29,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858261138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:29,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:29,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:40:29,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305043081] [2024-11-09 02:40:29,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:29,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:40:29,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:29,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:40:29,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:40:29,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:29,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 02:40:29,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:29,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:29,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:29,259 INFO L124 PetriNetUnfolderBase]: 202/302 cut-off events. [2024-11-09 02:40:29,259 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-09 02:40:29,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 302 events. 202/302 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 694 event pairs, 124 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 534. Up to 299 conditions per place. [2024-11-09 02:40:29,267 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2024-11-09 02:40:29,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 136 flow [2024-11-09 02:40:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:40:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:40:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-09 02:40:29,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-11-09 02:40:29,283 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 44 transitions. [2024-11-09 02:40:29,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 136 flow [2024-11-09 02:40:29,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:40:29,290 INFO L231 Difference]: Finished difference. Result has 28 places, 30 transitions, 92 flow [2024-11-09 02:40:29,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=30} [2024-11-09 02:40:29,297 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-11-09 02:40:29,298 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 30 transitions, 92 flow [2024-11-09 02:40:29,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 02:40:29,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:29,299 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 02:40:29,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:40:29,300 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 02:40:29,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:29,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1048452415, now seen corresponding path program 1 times [2024-11-09 02:40:29,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:29,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319573528] [2024-11-09 02:40:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:29,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:29,528 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 02:40:29,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:29,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319573528] [2024-11-09 02:40:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319573528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:29,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:29,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:40:29,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122752739] [2024-11-09 02:40:29,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:29,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:40:29,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:29,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 02:40:29,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:29,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:29,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:29,744 INFO L124 PetriNetUnfolderBase]: 341/506 cut-off events. [2024-11-09 02:40:29,744 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:40:29,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 506 events. 341/506 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1516 event pairs, 124 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1018. Up to 302 conditions per place. [2024-11-09 02:40:29,752 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 39 selfloop transitions, 2 changer transitions 4/46 dead transitions. [2024-11-09 02:40:29,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 219 flow [2024-11-09 02:40:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:40:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:40:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-09 02:40:29,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2024-11-09 02:40:29,756 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 92 flow. Second operand 3 states and 55 transitions. [2024-11-09 02:40:29,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 219 flow [2024-11-09 02:40:29,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:29,758 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 98 flow [2024-11-09 02:40:29,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2024-11-09 02:40:29,760 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2024-11-09 02:40:29,761 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 98 flow [2024-11-09 02:40:29,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 02:40:29,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:29,762 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 02:40:29,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:40:29,762 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 02:40:29,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 855025178, now seen corresponding path program 1 times [2024-11-09 02:40:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632682652] [2024-11-09 02:40:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:29,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:29,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632682652] [2024-11-09 02:40:29,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632682652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:29,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174713623] [2024-11-09 02:40:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:29,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:29,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:29,953 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 02:40:29,955 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 02:40:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:30,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:40:30,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:30,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:30,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174713623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:40:30,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:40:30,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-09 02:40:30,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643400490] [2024-11-09 02:40:30,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:40:30,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:40:30,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:40:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:40:30,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:30,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:30,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:30,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:30,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:30,359 INFO L124 PetriNetUnfolderBase]: 341/515 cut-off events. [2024-11-09 02:40:30,360 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-09 02:40:30,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 515 events. 341/515 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1406 event pairs, 228 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 1117. Up to 503 conditions per place. [2024-11-09 02:40:30,364 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2024-11-09 02:40:30,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 212 flow [2024-11-09 02:40:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:40:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:40:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-11-09 02:40:30,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-11-09 02:40:30,368 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 98 flow. Second operand 6 states and 71 transitions. [2024-11-09 02:40:30,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 212 flow [2024-11-09 02:40:30,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:30,370 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 192 flow [2024-11-09 02:40:30,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2024-11-09 02:40:30,371 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-11-09 02:40:30,372 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 192 flow [2024-11-09 02:40:30,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:30,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:30,372 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:30,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:40:30,573 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 02:40:30,574 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 02:40:30,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:30,575 INFO L85 PathProgramCache]: Analyzing trace with hash -804320266, now seen corresponding path program 2 times [2024-11-09 02:40:30,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:30,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943604236] [2024-11-09 02:40:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:30,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 02:40:30,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943604236] [2024-11-09 02:40:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943604236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235079186] [2024-11-09 02:40:30,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:40:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:30,863 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 02:40:30,865 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 02:40:30,983 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 02:40:30,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:40:30,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:40:30,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 02:40:31,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:40:31,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235079186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:31,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:40:31,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-09 02:40:31,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820873641] [2024-11-09 02:40:31,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:31,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:40:31,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:31,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:40:31,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:40:31,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:31,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:40:31,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:31,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:31,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:31,339 INFO L124 PetriNetUnfolderBase]: 681/1011 cut-off events. [2024-11-09 02:40:31,339 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-11-09 02:40:31,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2260 conditions, 1011 events. 681/1011 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3588 event pairs, 228 based on Foata normal form. 1/804 useless extension candidates. Maximal degree in co-relation 2171. Up to 539 conditions per place. [2024-11-09 02:40:31,345 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 61 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2024-11-09 02:40:31,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 403 flow [2024-11-09 02:40:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:40:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:40:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-09 02:40:31,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-11-09 02:40:31,347 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 192 flow. Second operand 4 states and 69 transitions. [2024-11-09 02:40:31,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 403 flow [2024-11-09 02:40:31,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 68 transitions, 379 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:31,354 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 201 flow [2024-11-09 02:40:31,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2024-11-09 02:40:31,355 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-11-09 02:40:31,355 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 201 flow [2024-11-09 02:40:31,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:40:31,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:31,356 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:31,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 02:40:31,559 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,SelfDestructingSolverStorable3 [2024-11-09 02:40:31,560 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 02:40:31,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:31,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1968055638, now seen corresponding path program 3 times [2024-11-09 02:40:31,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:31,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718773770] [2024-11-09 02:40:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 02:40:31,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:31,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718773770] [2024-11-09 02:40:31,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718773770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:31,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905370382] [2024-11-09 02:40:31,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:40:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:31,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:31,819 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 02:40:31,821 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 02:40:31,943 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 02:40:31,944 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:40:31,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:40:31,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 02:40:32,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:40:32,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905370382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:32,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:40:32,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-09 02:40:32,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951950483] [2024-11-09 02:40:32,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:32,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:40:32,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:32,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:40:32,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:40:32,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:32,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:40:32,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:32,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:32,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:32,305 INFO L124 PetriNetUnfolderBase]: 979/1443 cut-off events. [2024-11-09 02:40:32,307 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2024-11-09 02:40:32,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3776 conditions, 1443 events. 979/1443 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5421 event pairs, 380 based on Foata normal form. 1/1442 useless extension candidates. Maximal degree in co-relation 3696. Up to 862 conditions per place. [2024-11-09 02:40:32,314 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 61 selfloop transitions, 7 changer transitions 1/70 dead transitions. [2024-11-09 02:40:32,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 425 flow [2024-11-09 02:40:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:40:32,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:40:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-11-09 02:40:32,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-11-09 02:40:32,317 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 201 flow. Second operand 4 states and 67 transitions. [2024-11-09 02:40:32,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 425 flow [2024-11-09 02:40:32,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 70 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:40:32,322 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 250 flow [2024-11-09 02:40:32,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2024-11-09 02:40:32,324 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-11-09 02:40:32,325 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 250 flow [2024-11-09 02:40:32,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:40:32,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:32,325 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:32,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:40:32,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:32,530 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 02:40:32,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:32,530 INFO L85 PathProgramCache]: Analyzing trace with hash 76006112, now seen corresponding path program 1 times [2024-11-09 02:40:32,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:32,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070326286] [2024-11-09 02:40:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:32,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 02:40:32,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:32,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070326286] [2024-11-09 02:40:32,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070326286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:32,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593196352] [2024-11-09 02:40:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:32,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:32,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:32,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:40:32,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:40:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:32,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:40:32,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 02:40:33,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 02:40:33,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593196352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:40:33,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:40:33,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-09 02:40:33,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406973374] [2024-11-09 02:40:33,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:40:33,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:40:33,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:40:33,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:40:33,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:33,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 250 flow. Second operand has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 0 states have call successors, (0), 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 02:40:33,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:33,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:33,481 INFO L124 PetriNetUnfolderBase]: 979/1446 cut-off events. [2024-11-09 02:40:33,481 INFO L125 PetriNetUnfolderBase]: For 1506/1506 co-relation queries the response was YES. [2024-11-09 02:40:33,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 1446 events. 979/1446 cut-off events. For 1506/1506 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5403 event pairs, 672 based on Foata normal form. 1/1445 useless extension candidates. Maximal degree in co-relation 4195. Up to 1429 conditions per place. [2024-11-09 02:40:33,490 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 18 changer transitions 0/51 dead transitions. [2024-11-09 02:40:33,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 368 flow [2024-11-09 02:40:33,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:40:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:40:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-11-09 02:40:33,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-11-09 02:40:33,491 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 250 flow. Second operand 7 states and 72 transitions. [2024-11-09 02:40:33,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 368 flow [2024-11-09 02:40:33,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 366 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 02:40:33,497 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 316 flow [2024-11-09 02:40:33,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-09 02:40:33,498 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-11-09 02:40:33,498 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 316 flow [2024-11-09 02:40:33,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 0 states have call successors, (0), 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 02:40:33,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:33,499 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:33,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:40:33,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:33,700 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 02:40:33,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash -292710812, now seen corresponding path program 2 times [2024-11-09 02:40:33,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:33,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869604522] [2024-11-09 02:40:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:33,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869604522] [2024-11-09 02:40:34,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869604522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406321977] [2024-11-09 02:40:34,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:40:34,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:34,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:34,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:40:34,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:40:34,255 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:40:34,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:40:34,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:40:34,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:34,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:34,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406321977] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:34,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:40:34,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2024-11-09 02:40:34,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791015081] [2024-11-09 02:40:34,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:34,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:34,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:34,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:40:34,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:34,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:34,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:34,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:34,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:34,722 INFO L124 PetriNetUnfolderBase]: 1039/1532 cut-off events. [2024-11-09 02:40:34,722 INFO L125 PetriNetUnfolderBase]: For 1329/1329 co-relation queries the response was YES. [2024-11-09 02:40:34,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 1532 events. 1039/1532 cut-off events. For 1329/1329 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6085 event pairs, 108 based on Foata normal form. 26/1558 useless extension candidates. Maximal degree in co-relation 4449. Up to 645 conditions per place. [2024-11-09 02:40:34,732 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 77 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2024-11-09 02:40:34,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 617 flow [2024-11-09 02:40:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-09 02:40:34,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2024-11-09 02:40:34,735 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 316 flow. Second operand 5 states and 81 transitions. [2024-11-09 02:40:34,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 617 flow [2024-11-09 02:40:34,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 581 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-09 02:40:34,742 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 327 flow [2024-11-09 02:40:34,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-09 02:40:34,743 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-11-09 02:40:34,743 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 327 flow [2024-11-09 02:40:34,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:34,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:34,743 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:34,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 02:40:34,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:34,944 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 02:40:34,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1818608736, now seen corresponding path program 1 times [2024-11-09 02:40:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:34,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378672910] [2024-11-09 02:40:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:35,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:35,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378672910] [2024-11-09 02:40:35,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378672910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:35,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336849152] [2024-11-09 02:40:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:35,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:35,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:35,304 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:40:35,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:40:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:35,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 02:40:35,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:40:35,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:35,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336849152] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:35,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:40:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 8] total 14 [2024-11-09 02:40:35,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427173394] [2024-11-09 02:40:35,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:35,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:40:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:40:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:40:35,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:35,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 327 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 02:40:35,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:35,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:35,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:36,195 INFO L124 PetriNetUnfolderBase]: 1595/2380 cut-off events. [2024-11-09 02:40:36,196 INFO L125 PetriNetUnfolderBase]: For 4132/4132 co-relation queries the response was YES. [2024-11-09 02:40:36,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7781 conditions, 2380 events. 1595/2380 cut-off events. For 4132/4132 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10779 event pairs, 318 based on Foata normal form. 1/2381 useless extension candidates. Maximal degree in co-relation 7679. Up to 1194 conditions per place. [2024-11-09 02:40:36,212 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 25 changer transitions 3/121 dead transitions. [2024-11-09 02:40:36,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 121 transitions, 932 flow [2024-11-09 02:40:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:40:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:40:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-11-09 02:40:36,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-11-09 02:40:36,214 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 327 flow. Second operand 6 states and 103 transitions. [2024-11-09 02:40:36,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 121 transitions, 932 flow [2024-11-09 02:40:36,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 121 transitions, 892 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:36,225 INFO L231 Difference]: Finished difference. Result has 63 places, 75 transitions, 555 flow [2024-11-09 02:40:36,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=63, PETRI_TRANSITIONS=75} [2024-11-09 02:40:36,226 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-11-09 02:40:36,226 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 75 transitions, 555 flow [2024-11-09 02:40:36,226 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 02:40:36,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:36,227 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:36,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 02:40:36,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:36,431 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 02:40:36,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:36,431 INFO L85 PathProgramCache]: Analyzing trace with hash 392700814, now seen corresponding path program 2 times [2024-11-09 02:40:36,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:36,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46710993] [2024-11-09 02:40:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:40:36,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46710993] [2024-11-09 02:40:36,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46710993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:36,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:36,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:36,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654635432] [2024-11-09 02:40:36,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:36,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:36,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:36,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:36,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:36,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:36,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:36,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:36,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:37,243 INFO L124 PetriNetUnfolderBase]: 1595/2374 cut-off events. [2024-11-09 02:40:37,243 INFO L125 PetriNetUnfolderBase]: For 6350/6350 co-relation queries the response was YES. [2024-11-09 02:40:37,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9368 conditions, 2374 events. 1595/2374 cut-off events. For 6350/6350 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10425 event pairs, 340 based on Foata normal form. 40/2414 useless extension candidates. Maximal degree in co-relation 9260. Up to 994 conditions per place. [2024-11-09 02:40:37,259 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 79 selfloop transitions, 20 changer transitions 4/104 dead transitions. [2024-11-09 02:40:37,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 104 transitions, 908 flow [2024-11-09 02:40:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-09 02:40:37,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2024-11-09 02:40:37,261 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 555 flow. Second operand 5 states and 77 transitions. [2024-11-09 02:40:37,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 104 transitions, 908 flow [2024-11-09 02:40:37,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 104 transitions, 870 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:37,274 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 593 flow [2024-11-09 02:40:37,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=593, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2024-11-09 02:40:37,275 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-11-09 02:40:37,277 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 593 flow [2024-11-09 02:40:37,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:37,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:37,277 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:37,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:40:37,277 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 02:40:37,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:37,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1335172478, now seen corresponding path program 3 times [2024-11-09 02:40:37,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:37,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994718335] [2024-11-09 02:40:37,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:37,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:40:37,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:37,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994718335] [2024-11-09 02:40:37,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994718335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:37,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:37,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:37,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959801075] [2024-11-09 02:40:37,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:37,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:37,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:37,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 593 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:37,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:37,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:37,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:37,971 INFO L124 PetriNetUnfolderBase]: 1206/1790 cut-off events. [2024-11-09 02:40:37,971 INFO L125 PetriNetUnfolderBase]: For 6572/6572 co-relation queries the response was YES. [2024-11-09 02:40:37,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 1790 events. 1206/1790 cut-off events. For 6572/6572 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7508 event pairs, 269 based on Foata normal form. 16/1806 useless extension candidates. Maximal degree in co-relation 7250. Up to 963 conditions per place. [2024-11-09 02:40:37,985 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 99 selfloop transitions, 10 changer transitions 16/126 dead transitions. [2024-11-09 02:40:37,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 126 transitions, 1152 flow [2024-11-09 02:40:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-09 02:40:37,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-09 02:40:37,987 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 593 flow. Second operand 5 states and 80 transitions. [2024-11-09 02:40:37,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 126 transitions, 1152 flow [2024-11-09 02:40:38,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 126 transitions, 1102 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:38,004 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 600 flow [2024-11-09 02:40:38,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=600, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-11-09 02:40:38,005 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-11-09 02:40:38,006 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 600 flow [2024-11-09 02:40:38,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:38,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:38,007 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:38,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:40:38,007 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 02:40:38,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1831051926, now seen corresponding path program 4 times [2024-11-09 02:40:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539046331] [2024-11-09 02:40:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:38,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:38,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539046331] [2024-11-09 02:40:38,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539046331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:38,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:38,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:38,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542246565] [2024-11-09 02:40:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:38,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:38,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:38,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:38,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 600 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:38,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:38,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:38,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:38,807 INFO L124 PetriNetUnfolderBase]: 1280/1896 cut-off events. [2024-11-09 02:40:38,807 INFO L125 PetriNetUnfolderBase]: For 6809/6809 co-relation queries the response was YES. [2024-11-09 02:40:38,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8153 conditions, 1896 events. 1280/1896 cut-off events. For 6809/6809 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7801 event pairs, 346 based on Foata normal form. 28/1920 useless extension candidates. Maximal degree in co-relation 8039. Up to 991 conditions per place. [2024-11-09 02:40:38,827 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 103 selfloop transitions, 14 changer transitions 1/119 dead transitions. [2024-11-09 02:40:38,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 119 transitions, 1060 flow [2024-11-09 02:40:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-09 02:40:38,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5419354838709678 [2024-11-09 02:40:38,829 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 600 flow. Second operand 5 states and 84 transitions. [2024-11-09 02:40:38,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 119 transitions, 1060 flow [2024-11-09 02:40:38,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 119 transitions, 1003 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-09 02:40:38,848 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 612 flow [2024-11-09 02:40:38,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2024-11-09 02:40:38,851 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-11-09 02:40:38,851 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 612 flow [2024-11-09 02:40:38,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:38,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:38,851 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:38,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:40:38,852 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 02:40:38,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:38,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1416161536, now seen corresponding path program 3 times [2024-11-09 02:40:38,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:38,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581702493] [2024-11-09 02:40:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:38,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:39,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:39,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581702493] [2024-11-09 02:40:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581702493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:39,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:39,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:39,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230045961] [2024-11-09 02:40:39,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:39,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:39,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:39,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 612 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:39,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:39,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:39,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:39,576 INFO L124 PetriNetUnfolderBase]: 1390/2072 cut-off events. [2024-11-09 02:40:39,576 INFO L125 PetriNetUnfolderBase]: For 6689/6689 co-relation queries the response was YES. [2024-11-09 02:40:39,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8584 conditions, 2072 events. 1390/2072 cut-off events. For 6689/6689 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8833 event pairs, 370 based on Foata normal form. 30/1936 useless extension candidates. Maximal degree in co-relation 8471. Up to 993 conditions per place. [2024-11-09 02:40:39,593 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 103 selfloop transitions, 16 changer transitions 1/121 dead transitions. [2024-11-09 02:40:39,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 1068 flow [2024-11-09 02:40:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-09 02:40:39,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5419354838709678 [2024-11-09 02:40:39,595 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 612 flow. Second operand 5 states and 84 transitions. [2024-11-09 02:40:39,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 1068 flow [2024-11-09 02:40:39,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 1038 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 02:40:39,611 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 651 flow [2024-11-09 02:40:39,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=651, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-11-09 02:40:39,612 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-11-09 02:40:39,612 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 651 flow [2024-11-09 02:40:39,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:39,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:39,613 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:39,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:40:39,613 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 02:40:39,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:39,614 INFO L85 PathProgramCache]: Analyzing trace with hash 857660792, now seen corresponding path program 4 times [2024-11-09 02:40:39,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:39,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170196910] [2024-11-09 02:40:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:39,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:39,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:39,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170196910] [2024-11-09 02:40:39,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170196910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:39,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:39,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510093599] [2024-11-09 02:40:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:39,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:39,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:39,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:39,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:39,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:39,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 651 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:39,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:39,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:39,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:40,318 INFO L124 PetriNetUnfolderBase]: 1336/1982 cut-off events. [2024-11-09 02:40:40,318 INFO L125 PetriNetUnfolderBase]: For 7244/7244 co-relation queries the response was YES. [2024-11-09 02:40:40,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8585 conditions, 1982 events. 1336/1982 cut-off events. For 7244/7244 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8359 event pairs, 344 based on Foata normal form. 14/1838 useless extension candidates. Maximal degree in co-relation 8471. Up to 993 conditions per place. [2024-11-09 02:40:40,333 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 100 selfloop transitions, 16 changer transitions 12/129 dead transitions. [2024-11-09 02:40:40,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 129 transitions, 1136 flow [2024-11-09 02:40:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:40:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:40:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-11-09 02:40:40,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:40:40,334 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 651 flow. Second operand 6 states and 93 transitions. [2024-11-09 02:40:40,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 129 transitions, 1136 flow [2024-11-09 02:40:40,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 129 transitions, 1095 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-09 02:40:40,352 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 649 flow [2024-11-09 02:40:40,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=649, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-09 02:40:40,352 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-11-09 02:40:40,353 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 649 flow [2024-11-09 02:40:40,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:40,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:40,353 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:40,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:40:40,353 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 02:40:40,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:40,354 INFO L85 PathProgramCache]: Analyzing trace with hash -800982924, now seen corresponding path program 5 times [2024-11-09 02:40:40,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:40,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899003777] [2024-11-09 02:40:40,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:40,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:40,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:40,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899003777] [2024-11-09 02:40:40,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899003777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:40,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:40,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385370334] [2024-11-09 02:40:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:40,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:40,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:40,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:40,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:40,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 649 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:40,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:40,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:40,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:41,122 INFO L124 PetriNetUnfolderBase]: 1220/1796 cut-off events. [2024-11-09 02:40:41,123 INFO L125 PetriNetUnfolderBase]: For 7064/7064 co-relation queries the response was YES. [2024-11-09 02:40:41,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7976 conditions, 1796 events. 1220/1796 cut-off events. For 7064/7064 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7293 event pairs, 353 based on Foata normal form. 16/1670 useless extension candidates. Maximal degree in co-relation 7861. Up to 1077 conditions per place. [2024-11-09 02:40:41,138 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 96 selfloop transitions, 12 changer transitions 10/119 dead transitions. [2024-11-09 02:40:41,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 1081 flow [2024-11-09 02:40:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-09 02:40:41,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2024-11-09 02:40:41,140 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 649 flow. Second operand 5 states and 77 transitions. [2024-11-09 02:40:41,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 1081 flow [2024-11-09 02:40:41,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 119 transitions, 1039 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-09 02:40:41,161 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 643 flow [2024-11-09 02:40:41,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=643, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-11-09 02:40:41,162 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-11-09 02:40:41,162 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 643 flow [2024-11-09 02:40:41,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:41,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:41,162 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:41,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 02:40:41,162 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 02:40:41,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:41,163 INFO L85 PathProgramCache]: Analyzing trace with hash -180442164, now seen corresponding path program 6 times [2024-11-09 02:40:41,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:41,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686787785] [2024-11-09 02:40:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:41,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:41,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686787785] [2024-11-09 02:40:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686787785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:41,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:41,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:41,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100576114] [2024-11-09 02:40:41,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:41,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:41,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:41,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:41,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:41,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:41,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 643 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:41,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:41,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:41,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:41,860 INFO L124 PetriNetUnfolderBase]: 1168/1728 cut-off events. [2024-11-09 02:40:41,861 INFO L125 PetriNetUnfolderBase]: For 7298/7298 co-relation queries the response was YES. [2024-11-09 02:40:41,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 1728 events. 1168/1728 cut-off events. For 7298/7298 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6877 event pairs, 328 based on Foata normal form. 32/1622 useless extension candidates. Maximal degree in co-relation 7586. Up to 910 conditions per place. [2024-11-09 02:40:41,873 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 99 selfloop transitions, 20 changer transitions 13/133 dead transitions. [2024-11-09 02:40:41,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 133 transitions, 1172 flow [2024-11-09 02:40:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:40:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:40:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-11-09 02:40:41,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4792626728110599 [2024-11-09 02:40:41,874 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 643 flow. Second operand 7 states and 104 transitions. [2024-11-09 02:40:41,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 133 transitions, 1172 flow [2024-11-09 02:40:41,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 133 transitions, 1129 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-09 02:40:41,894 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 668 flow [2024-11-09 02:40:41,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=668, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-11-09 02:40:41,895 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-11-09 02:40:41,896 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 668 flow [2024-11-09 02:40:41,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:41,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:41,896 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:41,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 02:40:41,897 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 02:40:41,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:41,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2076939690, now seen corresponding path program 5 times [2024-11-09 02:40:41,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:41,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396470285] [2024-11-09 02:40:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:41,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:42,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396470285] [2024-11-09 02:40:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396470285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:42,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:42,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680817207] [2024-11-09 02:40:42,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:42,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:42,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:42,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 668 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:42,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:42,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:42,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:42,476 INFO L124 PetriNetUnfolderBase]: 1089/1611 cut-off events. [2024-11-09 02:40:42,476 INFO L125 PetriNetUnfolderBase]: For 7321/7321 co-relation queries the response was YES. [2024-11-09 02:40:42,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7219 conditions, 1611 events. 1089/1611 cut-off events. For 7321/7321 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6363 event pairs, 319 based on Foata normal form. 14/1495 useless extension candidates. Maximal degree in co-relation 7102. Up to 1037 conditions per place. [2024-11-09 02:40:42,488 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 83 selfloop transitions, 17 changer transitions 9/110 dead transitions. [2024-11-09 02:40:42,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 1031 flow [2024-11-09 02:40:42,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:42,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-11-09 02:40:42,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-11-09 02:40:42,489 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 668 flow. Second operand 5 states and 74 transitions. [2024-11-09 02:40:42,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 1031 flow [2024-11-09 02:40:42,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 971 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-09 02:40:42,509 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 680 flow [2024-11-09 02:40:42,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=680, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2024-11-09 02:40:42,510 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-11-09 02:40:42,511 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 680 flow [2024-11-09 02:40:42,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:42,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:42,511 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:42,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 02:40:42,511 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 02:40:42,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash 467777006, now seen corresponding path program 6 times [2024-11-09 02:40:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:42,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906024599] [2024-11-09 02:40:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:42,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906024599] [2024-11-09 02:40:42,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906024599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:42,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:42,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62248190] [2024-11-09 02:40:42,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:42,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:42,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:42,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:42,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:42,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 680 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:42,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:42,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:42,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:43,159 INFO L124 PetriNetUnfolderBase]: 1039/1547 cut-off events. [2024-11-09 02:40:43,160 INFO L125 PetriNetUnfolderBase]: For 7219/7219 co-relation queries the response was YES. [2024-11-09 02:40:43,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7023 conditions, 1547 events. 1039/1547 cut-off events. For 7219/7219 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6039 event pairs, 309 based on Foata normal form. 30/1451 useless extension candidates. Maximal degree in co-relation 6905. Up to 1037 conditions per place. [2024-11-09 02:40:43,172 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 89 selfloop transitions, 20 changer transitions 1/111 dead transitions. [2024-11-09 02:40:43,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 1059 flow [2024-11-09 02:40:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-09 02:40:43,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2024-11-09 02:40:43,173 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 680 flow. Second operand 5 states and 77 transitions. [2024-11-09 02:40:43,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 1059 flow [2024-11-09 02:40:43,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 111 transitions, 1021 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:43,191 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 725 flow [2024-11-09 02:40:43,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=725, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-11-09 02:40:43,192 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-11-09 02:40:43,192 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 725 flow [2024-11-09 02:40:43,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:43,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:43,192 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:43,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 02:40:43,193 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 02:40:43,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1854800072, now seen corresponding path program 7 times [2024-11-09 02:40:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18692620] [2024-11-09 02:40:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:43,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:43,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18692620] [2024-11-09 02:40:43,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18692620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:43,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652794651] [2024-11-09 02:40:43,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:43,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:43,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:43,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 725 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:43,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:43,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:43,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:43,833 INFO L124 PetriNetUnfolderBase]: 983/1453 cut-off events. [2024-11-09 02:40:43,833 INFO L125 PetriNetUnfolderBase]: For 6385/6385 co-relation queries the response was YES. [2024-11-09 02:40:43,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6422 conditions, 1453 events. 983/1453 cut-off events. For 6385/6385 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5513 event pairs, 273 based on Foata normal form. 28/1363 useless extension candidates. Maximal degree in co-relation 6304. Up to 863 conditions per place. [2024-11-09 02:40:43,845 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 86 selfloop transitions, 21 changer transitions 1/109 dead transitions. [2024-11-09 02:40:43,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 109 transitions, 1054 flow [2024-11-09 02:40:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-09 02:40:43,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2024-11-09 02:40:43,846 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 725 flow. Second operand 5 states and 76 transitions. [2024-11-09 02:40:43,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 109 transitions, 1054 flow [2024-11-09 02:40:43,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 109 transitions, 987 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-09 02:40:43,861 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 693 flow [2024-11-09 02:40:43,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=693, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-09 02:40:43,862 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-11-09 02:40:43,862 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 693 flow [2024-11-09 02:40:43,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:43,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:43,863 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:43,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 02:40:43,864 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 02:40:43,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:43,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1203199010, now seen corresponding path program 7 times [2024-11-09 02:40:43,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:43,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882811232] [2024-11-09 02:40:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:43,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 02:40:44,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:44,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882811232] [2024-11-09 02:40:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882811232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:44,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:40:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75858847] [2024-11-09 02:40:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:44,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:40:44,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:44,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:40:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:40:44,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-09 02:40:44,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 693 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:44,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:44,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-09 02:40:44,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:44,499 INFO L124 PetriNetUnfolderBase]: 929/1363 cut-off events. [2024-11-09 02:40:44,500 INFO L125 PetriNetUnfolderBase]: For 5246/5246 co-relation queries the response was YES. [2024-11-09 02:40:44,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5892 conditions, 1363 events. 929/1363 cut-off events. For 5246/5246 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5042 event pairs, 269 based on Foata normal form. 14/1267 useless extension candidates. Maximal degree in co-relation 5775. Up to 945 conditions per place. [2024-11-09 02:40:44,511 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 78 selfloop transitions, 19 changer transitions 10/108 dead transitions. [2024-11-09 02:40:44,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 108 transitions, 1025 flow [2024-11-09 02:40:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-11-09 02:40:44,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-11-09 02:40:44,512 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 693 flow. Second operand 5 states and 73 transitions. [2024-11-09 02:40:44,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 108 transitions, 1025 flow [2024-11-09 02:40:44,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 108 transitions, 983 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:40:44,525 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 677 flow [2024-11-09 02:40:44,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=677, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2024-11-09 02:40:44,525 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-11-09 02:40:44,526 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 677 flow [2024-11-09 02:40:44,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:40:44,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:44,526 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:44,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 02:40:44,526 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:40:44,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash -991865572, now seen corresponding path program 1 times [2024-11-09 02:40:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:44,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790637413] [2024-11-09 02:40:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 02:40:44,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:44,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790637413] [2024-11-09 02:40:44,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790637413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:44,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396075038] [2024-11-09 02:40:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:44,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:44,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:44,796 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:40:44,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:40:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:44,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:40:44,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:45,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:40:45,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-11-09 02:40:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:40:45,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:41:07,609 INFO L349 Elim1Store]: treesize reduction 28, result has 94.9 percent of original size [2024-11-09 02:41:07,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 210 treesize of output 583