./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:33:51,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:33:51,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:33:51,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:33:51,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:33:51,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:33:51,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:33:51,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:33:51,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:33:51,936 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:33:51,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:33:51,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:33:51,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:33:51,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:33:51,939 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:33:51,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:33:51,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:33:51,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:33:51,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:33:51,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:33:51,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:33:51,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:33:51,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:33:51,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:33:51,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:33:51,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:33:51,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:33:51,944 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:33:51,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:33:51,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:33:51,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:33:51,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:33:51,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:33:51,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:33:51,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:33:51,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:33:51,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:33:51,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:33:51,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:33:51,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:33:51,946 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:33:51,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:33:51,947 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-10-11 14:33:52,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:33:52,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:33:52,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:33:52,169 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:33:52,169 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:33:52,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-10-11 14:33:53,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:33:53,571 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:33:53,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-10-11 14:33:53,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/35084eb9a/429dbfb6554b4ceb9402a16f0714b5f8/FLAGa8313576f [2024-10-11 14:33:53,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/35084eb9a/429dbfb6554b4ceb9402a16f0714b5f8 [2024-10-11 14:33:53,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:33:53,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:33:53,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:33:53,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:33:53,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:33:53,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:53,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac5dd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53, skipping insertion in model container [2024-10-11 14:33:53,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:53,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:33:53,834 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2024-10-11 14:33:53,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:33:53,861 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:33:53,903 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2024-10-11 14:33:53,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:33:53,934 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:33:53,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53 WrapperNode [2024-10-11 14:33:53,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:33:53,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:33:53,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:33:53,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:33:53,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:53,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:53,998 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 252 [2024-10-11 14:33:54,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:33:54,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:33:54,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:33:54,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:33:54,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,060 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-11 14:33:54,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:33:54,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:33:54,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:33:54,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:33:54,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (1/1) ... [2024-10-11 14:33:54,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:33:54,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:54,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:33:54,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:33:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:33:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:33:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:33:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:33:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:33:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:33:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:33:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:33:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:33:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:33:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:33:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:33:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:33:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:33:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:33:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:33:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:33:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:33:54,194 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:33:54,288 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:33:54,289 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:33:54,605 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:33:54,605 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:33:54,833 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:33:54,834 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-11 14:33:54,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:54 BoogieIcfgContainer [2024-10-11 14:33:54,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:33:54,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:33:54,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:33:54,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:33:54,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:53" (1/3) ... [2024-10-11 14:33:54,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceeb59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:54, skipping insertion in model container [2024-10-11 14:33:54,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:53" (2/3) ... [2024-10-11 14:33:54,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceeb59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:54, skipping insertion in model container [2024-10-11 14:33:54,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:54" (3/3) ... [2024-10-11 14:33:54,841 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-10-11 14:33:54,853 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:33:54,853 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:33:54,853 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:33:54,882 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:33:54,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 109 flow [2024-10-11 14:33:54,934 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2024-10-11 14:33:54,935 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:33:54,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 7/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-11 14:33:54,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 109 flow [2024-10-11 14:33:54,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 98 flow [2024-10-11 14:33:54,950 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:33:54,958 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;@676a9f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:33:54,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:33:54,969 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:33:54,971 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2024-10-11 14:33:54,971 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:33:54,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:54,972 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:54,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:54,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1119588767, now seen corresponding path program 1 times [2024-10-11 14:33:54,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:54,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200628180] [2024-10-11 14:33:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:54,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:55,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:55,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200628180] [2024-10-11 14:33:55,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200628180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:55,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:55,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:33:55,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483734978] [2024-10-11 14:33:55,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:55,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 14:33:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:55,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 14:33:55,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 14:33:55,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-11 14:33:55,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:55,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:55,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-11 14:33:55,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:55,406 INFO L124 PetriNetUnfolderBase]: 1088/1735 cut-off events. [2024-10-11 14:33:55,407 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-10-11 14:33:55,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3314 conditions, 1735 events. 1088/1735 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8165 event pairs, 892 based on Foata normal form. 156/1750 useless extension candidates. Maximal degree in co-relation 3078. Up to 1453 conditions per place. [2024-10-11 14:33:55,426 INFO L140 encePairwiseOnDemand]: 42/44 looper letters, 30 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2024-10-11 14:33:55,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 154 flow [2024-10-11 14:33:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 14:33:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 14:33:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-10-11 14:33:55,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-10-11 14:33:55,440 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 2 states and 54 transitions. [2024-10-11 14:33:55,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 154 flow [2024-10-11 14:33:55,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 142 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:33:55,448 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 82 flow [2024-10-11 14:33:55,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2024-10-11 14:33:55,452 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2024-10-11 14:33:55,454 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 82 flow [2024-10-11 14:33:55,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:55,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:55,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:55,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:33:55,455 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:55,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash 611689709, now seen corresponding path program 1 times [2024-10-11 14:33:55,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:55,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410921466] [2024-10-11 14:33:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:55,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:55,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:55,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410921466] [2024-10-11 14:33:55,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410921466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:55,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:55,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:33:55,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775608805] [2024-10-11 14:33:55,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:55,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:33:55,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:33:55,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:33:55,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-11 14:33:55,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:55,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:55,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-11 14:33:55,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:55,885 INFO L124 PetriNetUnfolderBase]: 980/1633 cut-off events. [2024-10-11 14:33:55,885 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-11 14:33:55,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3057 conditions, 1633 events. 980/1633 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7937 event pairs, 300 based on Foata normal form. 39/1573 useless extension candidates. Maximal degree in co-relation 3054. Up to 1042 conditions per place. [2024-10-11 14:33:55,898 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-10-11 14:33:55,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 196 flow [2024-10-11 14:33:55,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:33:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:33:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-10-11 14:33:55,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-11 14:33:55,900 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 82 flow. Second operand 3 states and 77 transitions. [2024-10-11 14:33:55,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 196 flow [2024-10-11 14:33:55,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:33:55,902 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 94 flow [2024-10-11 14:33:55,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-10-11 14:33:55,902 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-10-11 14:33:55,902 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 94 flow [2024-10-11 14:33:55,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:55,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:55,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:55,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:33:55,903 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:55,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1649089965, now seen corresponding path program 2 times [2024-10-11 14:33:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:55,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729485622] [2024-10-11 14:33:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:55,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:56,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:56,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729485622] [2024-10-11 14:33:56,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729485622] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:56,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:56,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:33:56,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000697798] [2024-10-11 14:33:56,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:56,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:33:56,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:33:56,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:33:56,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-11 14:33:56,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:56,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:56,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-11 14:33:56,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:56,269 INFO L124 PetriNetUnfolderBase]: 1029/1738 cut-off events. [2024-10-11 14:33:56,269 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-10-11 14:33:56,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3476 conditions, 1738 events. 1029/1738 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8492 event pairs, 828 based on Foata normal form. 42/1679 useless extension candidates. Maximal degree in co-relation 3471. Up to 1373 conditions per place. [2024-10-11 14:33:56,277 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 30 selfloop transitions, 2 changer transitions 15/55 dead transitions. [2024-10-11 14:33:56,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 223 flow [2024-10-11 14:33:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:33:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:33:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-11 14:33:56,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-10-11 14:33:56,279 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 94 flow. Second operand 5 states and 104 transitions. [2024-10-11 14:33:56,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 223 flow [2024-10-11 14:33:56,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:33:56,281 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 114 flow [2024-10-11 14:33:56,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-10-11 14:33:56,281 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-10-11 14:33:56,282 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 114 flow [2024-10-11 14:33:56,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:56,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:56,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:56,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:33:56,282 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:56,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash 178652381, now seen corresponding path program 1 times [2024-10-11 14:33:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:56,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177344108] [2024-10-11 14:33:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:56,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:56,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177344108] [2024-10-11 14:33:56,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177344108] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:56,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:56,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:33:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516709652] [2024-10-11 14:33:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:56,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:33:56,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:56,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:33:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:33:56,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-11 14:33:56,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:56,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:56,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-11 14:33:56,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:56,582 INFO L124 PetriNetUnfolderBase]: 1180/1998 cut-off events. [2024-10-11 14:33:56,582 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2024-10-11 14:33:56,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 1998 events. 1180/1998 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 10274 event pairs, 961 based on Foata normal form. 38/1930 useless extension candidates. Maximal degree in co-relation 4280. Up to 1374 conditions per place. [2024-10-11 14:33:56,591 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 31 selfloop transitions, 2 changer transitions 17/58 dead transitions. [2024-10-11 14:33:56,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 264 flow [2024-10-11 14:33:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:33:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:33:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-11 14:33:56,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5284090909090909 [2024-10-11 14:33:56,594 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 114 flow. Second operand 4 states and 93 transitions. [2024-10-11 14:33:56,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 264 flow [2024-10-11 14:33:56,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 252 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:56,596 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 120 flow [2024-10-11 14:33:56,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-10-11 14:33:56,597 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-10-11 14:33:56,598 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 120 flow [2024-10-11 14:33:56,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:56,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:56,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:56,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:33:56,598 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:56,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:56,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1584022123, now seen corresponding path program 1 times [2024-10-11 14:33:56,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:56,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183950991] [2024-10-11 14:33:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:33:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183950991] [2024-10-11 14:33:57,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183950991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:57,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:57,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:33:57,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298311598] [2024-10-11 14:33:57,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:57,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:33:57,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:57,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:33:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:33:57,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:33:57,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 120 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:57,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:57,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:33:57,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:58,056 INFO L124 PetriNetUnfolderBase]: 1573/2616 cut-off events. [2024-10-11 14:33:58,057 INFO L125 PetriNetUnfolderBase]: For 694/696 co-relation queries the response was YES. [2024-10-11 14:33:58,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5754 conditions, 2616 events. 1573/2616 cut-off events. For 694/696 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 14273 event pairs, 114 based on Foata normal form. 1/2542 useless extension candidates. Maximal degree in co-relation 5745. Up to 1621 conditions per place. [2024-10-11 14:33:58,068 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 103 selfloop transitions, 27 changer transitions 3/140 dead transitions. [2024-10-11 14:33:58,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 140 transitions, 671 flow [2024-10-11 14:33:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:33:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:33:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 251 transitions. [2024-10-11 14:33:58,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4753787878787879 [2024-10-11 14:33:58,071 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 120 flow. Second operand 12 states and 251 transitions. [2024-10-11 14:33:58,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 140 transitions, 671 flow [2024-10-11 14:33:58,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 140 transitions, 653 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:58,074 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 266 flow [2024-10-11 14:33:58,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=266, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2024-10-11 14:33:58,074 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-10-11 14:33:58,075 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 266 flow [2024-10-11 14:33:58,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:58,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:58,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:58,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:33:58,075 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:58,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1341444541, now seen corresponding path program 2 times [2024-10-11 14:33:58,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:58,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130407918] [2024-10-11 14:33:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:58,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:33:58,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:58,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130407918] [2024-10-11 14:33:58,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130407918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:58,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:58,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:33:58,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571561261] [2024-10-11 14:33:58,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:58,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:33:58,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:58,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:33:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:33:58,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-11 14:33:58,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:58,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:58,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-11 14:33:58,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:58,351 INFO L124 PetriNetUnfolderBase]: 1191/2048 cut-off events. [2024-10-11 14:33:58,351 INFO L125 PetriNetUnfolderBase]: For 1199/1202 co-relation queries the response was YES. [2024-10-11 14:33:58,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 2048 events. 1191/2048 cut-off events. For 1199/1202 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 10357 event pairs, 345 based on Foata normal form. 17/2009 useless extension candidates. Maximal degree in co-relation 5412. Up to 1662 conditions per place. [2024-10-11 14:33:58,365 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 61 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-10-11 14:33:58,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 413 flow [2024-10-11 14:33:58,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:33:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:33:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-10-11 14:33:58,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-10-11 14:33:58,367 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 266 flow. Second operand 3 states and 74 transitions. [2024-10-11 14:33:58,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 413 flow [2024-10-11 14:33:58,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 407 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:33:58,370 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 269 flow [2024-10-11 14:33:58,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2024-10-11 14:33:58,371 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-10-11 14:33:58,371 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 269 flow [2024-10-11 14:33:58,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:58,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:58,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:58,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:33:58,372 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:58,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash 481781625, now seen corresponding path program 3 times [2024-10-11 14:33:58,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:58,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227586227] [2024-10-11 14:33:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:58,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:33:59,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:59,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227586227] [2024-10-11 14:33:59,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227586227] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:59,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:59,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:33:59,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62947474] [2024-10-11 14:33:59,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:59,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:33:59,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:33:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:33:59,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:33:59,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 269 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:59,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:59,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:33:59,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:59,771 INFO L124 PetriNetUnfolderBase]: 1412/2417 cut-off events. [2024-10-11 14:33:59,774 INFO L125 PetriNetUnfolderBase]: For 1965/1965 co-relation queries the response was YES. [2024-10-11 14:33:59,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6769 conditions, 2417 events. 1412/2417 cut-off events. For 1965/1965 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 13002 event pairs, 305 based on Foata normal form. 1/2346 useless extension candidates. Maximal degree in co-relation 6754. Up to 1722 conditions per place. [2024-10-11 14:33:59,794 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 92 selfloop transitions, 28 changer transitions 3/130 dead transitions. [2024-10-11 14:33:59,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 130 transitions, 770 flow [2024-10-11 14:33:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:33:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:33:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-10-11 14:33:59,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4462809917355372 [2024-10-11 14:33:59,796 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 269 flow. Second operand 11 states and 216 transitions. [2024-10-11 14:33:59,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 130 transitions, 770 flow [2024-10-11 14:33:59,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 739 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:59,803 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 416 flow [2024-10-11 14:33:59,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=416, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-10-11 14:33:59,804 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-10-11 14:33:59,804 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 416 flow [2024-10-11 14:33:59,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:59,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:59,805 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:59,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:33:59,805 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:59,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:59,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1449318445, now seen corresponding path program 4 times [2024-10-11 14:33:59,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:59,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798935190] [2024-10-11 14:33:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:59,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:00,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798935190] [2024-10-11 14:34:00,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798935190] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:00,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:00,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:00,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005526031] [2024-10-11 14:34:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:00,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:00,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:00,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 416 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:00,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:00,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:00,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:00,821 INFO L124 PetriNetUnfolderBase]: 1516/2662 cut-off events. [2024-10-11 14:34:00,821 INFO L125 PetriNetUnfolderBase]: For 2722/2724 co-relation queries the response was YES. [2024-10-11 14:34:00,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 2662 events. 1516/2662 cut-off events. For 2722/2724 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 14983 event pairs, 391 based on Foata normal form. 1/2581 useless extension candidates. Maximal degree in co-relation 7533. Up to 1821 conditions per place. [2024-10-11 14:34:00,835 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 104 selfloop transitions, 34 changer transitions 3/148 dead transitions. [2024-10-11 14:34:00,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 148 transitions, 986 flow [2024-10-11 14:34:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-10-11 14:34:00,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-10-11 14:34:00,837 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 416 flow. Second operand 11 states and 224 transitions. [2024-10-11 14:34:00,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 148 transitions, 986 flow [2024-10-11 14:34:00,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 148 transitions, 955 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-11 14:34:00,843 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 611 flow [2024-10-11 14:34:00,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=611, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2024-10-11 14:34:00,843 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-10-11 14:34:00,843 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 611 flow [2024-10-11 14:34:00,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:00,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:00,844 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:00,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:34:00,844 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:00,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1443489037, now seen corresponding path program 5 times [2024-10-11 14:34:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:00,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908327873] [2024-10-11 14:34:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:00,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:01,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:01,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908327873] [2024-10-11 14:34:01,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908327873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:01,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:01,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:01,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230529528] [2024-10-11 14:34:01,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:01,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:01,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:01,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:01,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:01,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 611 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:01,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:01,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:01,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:02,060 INFO L124 PetriNetUnfolderBase]: 1683/2976 cut-off events. [2024-10-11 14:34:02,061 INFO L125 PetriNetUnfolderBase]: For 5426/5438 co-relation queries the response was YES. [2024-10-11 14:34:02,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9358 conditions, 2976 events. 1683/2976 cut-off events. For 5426/5438 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17534 event pairs, 319 based on Foata normal form. 4/2885 useless extension candidates. Maximal degree in co-relation 9332. Up to 1830 conditions per place. [2024-10-11 14:34:02,076 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 118 selfloop transitions, 45 changer transitions 3/173 dead transitions. [2024-10-11 14:34:02,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 173 transitions, 1266 flow [2024-10-11 14:34:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:34:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:34:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 249 transitions. [2024-10-11 14:34:02,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-10-11 14:34:02,077 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 611 flow. Second operand 12 states and 249 transitions. [2024-10-11 14:34:02,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 173 transitions, 1266 flow [2024-10-11 14:34:02,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 173 transitions, 1236 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-10-11 14:34:02,085 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 768 flow [2024-10-11 14:34:02,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=768, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-10-11 14:34:02,086 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-10-11 14:34:02,086 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 768 flow [2024-10-11 14:34:02,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:02,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:02,086 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:02,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:34:02,087 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:02,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:02,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1406915147, now seen corresponding path program 6 times [2024-10-11 14:34:02,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:02,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825294413] [2024-10-11 14:34:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:02,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:02,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:02,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825294413] [2024-10-11 14:34:02,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825294413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:02,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:02,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:02,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356647500] [2024-10-11 14:34:02,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:02,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:02,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:02,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:02,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:02,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:02,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 768 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:02,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:02,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:02,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:03,272 INFO L124 PetriNetUnfolderBase]: 1787/3198 cut-off events. [2024-10-11 14:34:03,273 INFO L125 PetriNetUnfolderBase]: For 8135/8147 co-relation queries the response was YES. [2024-10-11 14:34:03,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10696 conditions, 3198 events. 1787/3198 cut-off events. For 8135/8147 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 19443 event pairs, 417 based on Foata normal form. 4/3097 useless extension candidates. Maximal degree in co-relation 10666. Up to 2167 conditions per place. [2024-10-11 14:34:03,288 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 125 selfloop transitions, 41 changer transitions 3/176 dead transitions. [2024-10-11 14:34:03,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 176 transitions, 1431 flow [2024-10-11 14:34:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:34:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:34:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 245 transitions. [2024-10-11 14:34:03,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4640151515151515 [2024-10-11 14:34:03,289 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 768 flow. Second operand 12 states and 245 transitions. [2024-10-11 14:34:03,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 176 transitions, 1431 flow [2024-10-11 14:34:03,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 176 transitions, 1340 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:03,299 INFO L231 Difference]: Finished difference. Result has 110 places, 109 transitions, 846 flow [2024-10-11 14:34:03,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=846, PETRI_PLACES=110, PETRI_TRANSITIONS=109} [2024-10-11 14:34:03,300 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-10-11 14:34:03,300 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 109 transitions, 846 flow [2024-10-11 14:34:03,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:03,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:03,300 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:03,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:34:03,301 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:03,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:03,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1545533663, now seen corresponding path program 7 times [2024-10-11 14:34:03,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:03,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908064890] [2024-10-11 14:34:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:03,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:03,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:03,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908064890] [2024-10-11 14:34:03,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908064890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:03,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:03,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585463463] [2024-10-11 14:34:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:03,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:03,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:03,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:03,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 109 transitions, 846 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:03,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:03,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:03,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:04,230 INFO L124 PetriNetUnfolderBase]: 1787/3196 cut-off events. [2024-10-11 14:34:04,230 INFO L125 PetriNetUnfolderBase]: For 9993/10017 co-relation queries the response was YES. [2024-10-11 14:34:04,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11031 conditions, 3196 events. 1787/3196 cut-off events. For 9993/10017 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 19357 event pairs, 437 based on Foata normal form. 16/3104 useless extension candidates. Maximal degree in co-relation 10997. Up to 2251 conditions per place. [2024-10-11 14:34:04,248 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 121 selfloop transitions, 40 changer transitions 3/171 dead transitions. [2024-10-11 14:34:04,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 171 transitions, 1452 flow [2024-10-11 14:34:04,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:34:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:34:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-10-11 14:34:04,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-10-11 14:34:04,250 INFO L175 Difference]: Start difference. First operand has 110 places, 109 transitions, 846 flow. Second operand 12 states and 236 transitions. [2024-10-11 14:34:04,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 171 transitions, 1452 flow [2024-10-11 14:34:04,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 171 transitions, 1343 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-10-11 14:34:04,262 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 868 flow [2024-10-11 14:34:04,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=868, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-10-11 14:34:04,263 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-10-11 14:34:04,263 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 868 flow [2024-10-11 14:34:04,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:04,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:04,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:04,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:34:04,264 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:04,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:04,264 INFO L85 PathProgramCache]: Analyzing trace with hash 112313367, now seen corresponding path program 8 times [2024-10-11 14:34:04,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:04,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275075569] [2024-10-11 14:34:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:04,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:04,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275075569] [2024-10-11 14:34:04,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275075569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:04,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:04,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:04,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011118713] [2024-10-11 14:34:04,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:04,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:04,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:04,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:04,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:04,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 868 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:04,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:04,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:04,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:05,383 INFO L124 PetriNetUnfolderBase]: 1924/3441 cut-off events. [2024-10-11 14:34:05,384 INFO L125 PetriNetUnfolderBase]: For 10790/10814 co-relation queries the response was YES. [2024-10-11 14:34:05,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11906 conditions, 3441 events. 1924/3441 cut-off events. For 10790/10814 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 21215 event pairs, 568 based on Foata normal form. 7/3334 useless extension candidates. Maximal degree in co-relation 11869. Up to 2518 conditions per place. [2024-10-11 14:34:05,400 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 129 selfloop transitions, 36 changer transitions 3/175 dead transitions. [2024-10-11 14:34:05,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 175 transitions, 1551 flow [2024-10-11 14:34:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-10-11 14:34:05,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-10-11 14:34:05,402 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 868 flow. Second operand 11 states and 220 transitions. [2024-10-11 14:34:05,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 175 transitions, 1551 flow [2024-10-11 14:34:05,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 175 transitions, 1457 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-10-11 14:34:05,415 INFO L231 Difference]: Finished difference. Result has 121 places, 121 transitions, 993 flow [2024-10-11 14:34:05,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=993, PETRI_PLACES=121, PETRI_TRANSITIONS=121} [2024-10-11 14:34:05,416 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-10-11 14:34:05,416 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 121 transitions, 993 flow [2024-10-11 14:34:05,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:05,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:05,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:05,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 14:34:05,416 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:05,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash -389750895, now seen corresponding path program 9 times [2024-10-11 14:34:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:05,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337254956] [2024-10-11 14:34:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:05,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:06,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:06,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337254956] [2024-10-11 14:34:06,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337254956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:06,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:06,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976060730] [2024-10-11 14:34:06,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:06,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:06,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:06,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 121 transitions, 993 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:06,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:06,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:06,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:06,764 INFO L124 PetriNetUnfolderBase]: 2056/3699 cut-off events. [2024-10-11 14:34:06,764 INFO L125 PetriNetUnfolderBase]: For 18250/18282 co-relation queries the response was YES. [2024-10-11 14:34:06,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13654 conditions, 3699 events. 2056/3699 cut-off events. For 18250/18282 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 23553 event pairs, 627 based on Foata normal form. 9/3589 useless extension candidates. Maximal degree in co-relation 13613. Up to 2722 conditions per place. [2024-10-11 14:34:06,785 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 140 selfloop transitions, 36 changer transitions 3/186 dead transitions. [2024-10-11 14:34:06,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 186 transitions, 1730 flow [2024-10-11 14:34:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-10-11 14:34:06,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45867768595041325 [2024-10-11 14:34:06,787 INFO L175 Difference]: Start difference. First operand has 121 places, 121 transitions, 993 flow. Second operand 11 states and 222 transitions. [2024-10-11 14:34:06,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 186 transitions, 1730 flow [2024-10-11 14:34:06,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 186 transitions, 1616 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:06,809 INFO L231 Difference]: Finished difference. Result has 129 places, 130 transitions, 1087 flow [2024-10-11 14:34:06,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1087, PETRI_PLACES=129, PETRI_TRANSITIONS=130} [2024-10-11 14:34:06,810 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 86 predicate places. [2024-10-11 14:34:06,810 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 130 transitions, 1087 flow [2024-10-11 14:34:06,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:06,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:06,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:06,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:34:06,811 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:06,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2017523209, now seen corresponding path program 10 times [2024-10-11 14:34:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:06,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033230995] [2024-10-11 14:34:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:06,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:07,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033230995] [2024-10-11 14:34:07,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033230995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:07,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:07,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:07,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348220906] [2024-10-11 14:34:07,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:07,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:07,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:07,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:07,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:07,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:07,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 130 transitions, 1087 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:07,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:07,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:07,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:07,882 INFO L124 PetriNetUnfolderBase]: 2222/3984 cut-off events. [2024-10-11 14:34:07,883 INFO L125 PetriNetUnfolderBase]: For 23933/23991 co-relation queries the response was YES. [2024-10-11 14:34:07,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15390 conditions, 3984 events. 2222/3984 cut-off events. For 23933/23991 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 25839 event pairs, 690 based on Foata normal form. 7/3857 useless extension candidates. Maximal degree in co-relation 15345. Up to 2931 conditions per place. [2024-10-11 14:34:07,901 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 148 selfloop transitions, 37 changer transitions 3/195 dead transitions. [2024-10-11 14:34:07,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 195 transitions, 1875 flow [2024-10-11 14:34:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-10-11 14:34:07,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-10-11 14:34:07,903 INFO L175 Difference]: Start difference. First operand has 129 places, 130 transitions, 1087 flow. Second operand 11 states and 225 transitions. [2024-10-11 14:34:07,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 195 transitions, 1875 flow [2024-10-11 14:34:07,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 195 transitions, 1749 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:07,927 INFO L231 Difference]: Finished difference. Result has 137 places, 137 transitions, 1183 flow [2024-10-11 14:34:07,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1183, PETRI_PLACES=137, PETRI_TRANSITIONS=137} [2024-10-11 14:34:07,927 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2024-10-11 14:34:07,927 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 137 transitions, 1183 flow [2024-10-11 14:34:07,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:07,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:07,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:07,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 14:34:07,928 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:07,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1425398355, now seen corresponding path program 11 times [2024-10-11 14:34:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:07,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892601227] [2024-10-11 14:34:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:08,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:08,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892601227] [2024-10-11 14:34:08,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892601227] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:08,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:08,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:08,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702996692] [2024-10-11 14:34:08,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:08,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:08,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:08,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:08,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:08,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:08,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 137 transitions, 1183 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:08,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:08,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:08,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:08,919 INFO L124 PetriNetUnfolderBase]: 2283/4088 cut-off events. [2024-10-11 14:34:08,920 INFO L125 PetriNetUnfolderBase]: For 29224/29338 co-relation queries the response was YES. [2024-10-11 14:34:08,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16180 conditions, 4088 events. 2283/4088 cut-off events. For 29224/29338 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 26659 event pairs, 792 based on Foata normal form. 21/3977 useless extension candidates. Maximal degree in co-relation 16131. Up to 3170 conditions per place. [2024-10-11 14:34:08,951 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 142 selfloop transitions, 36 changer transitions 4/189 dead transitions. [2024-10-11 14:34:08,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 189 transitions, 1831 flow [2024-10-11 14:34:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-10-11 14:34:08,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4380165289256198 [2024-10-11 14:34:08,952 INFO L175 Difference]: Start difference. First operand has 137 places, 137 transitions, 1183 flow. Second operand 11 states and 212 transitions. [2024-10-11 14:34:08,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 189 transitions, 1831 flow [2024-10-11 14:34:08,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 189 transitions, 1699 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:08,991 INFO L231 Difference]: Finished difference. Result has 144 places, 143 transitions, 1218 flow [2024-10-11 14:34:08,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1218, PETRI_PLACES=144, PETRI_TRANSITIONS=143} [2024-10-11 14:34:08,992 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 101 predicate places. [2024-10-11 14:34:08,992 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 143 transitions, 1218 flow [2024-10-11 14:34:08,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:08,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:08,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:08,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 14:34:08,993 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:08,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:08,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1225321247, now seen corresponding path program 12 times [2024-10-11 14:34:08,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:08,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621957408] [2024-10-11 14:34:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:08,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:09,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:09,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621957408] [2024-10-11 14:34:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621957408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:09,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:09,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:09,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572886451] [2024-10-11 14:34:09,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:09,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:09,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:09,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:09,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:09,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:09,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 143 transitions, 1218 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:09,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:09,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:09,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:10,110 INFO L124 PetriNetUnfolderBase]: 2434/4332 cut-off events. [2024-10-11 14:34:10,110 INFO L125 PetriNetUnfolderBase]: For 30687/30761 co-relation queries the response was YES. [2024-10-11 14:34:10,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17210 conditions, 4332 events. 2434/4332 cut-off events. For 30687/30761 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 28414 event pairs, 824 based on Foata normal form. 27/4231 useless extension candidates. Maximal degree in co-relation 17157. Up to 3194 conditions per place. [2024-10-11 14:34:10,138 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 153 selfloop transitions, 42 changer transitions 3/205 dead transitions. [2024-10-11 14:34:10,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 2040 flow [2024-10-11 14:34:10,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-10-11 14:34:10,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-10-11 14:34:10,139 INFO L175 Difference]: Start difference. First operand has 144 places, 143 transitions, 1218 flow. Second operand 11 states and 223 transitions. [2024-10-11 14:34:10,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 2040 flow [2024-10-11 14:34:10,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 205 transitions, 1932 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:10,171 INFO L231 Difference]: Finished difference. Result has 151 places, 150 transitions, 1375 flow [2024-10-11 14:34:10,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1375, PETRI_PLACES=151, PETRI_TRANSITIONS=150} [2024-10-11 14:34:10,173 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 108 predicate places. [2024-10-11 14:34:10,173 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 150 transitions, 1375 flow [2024-10-11 14:34:10,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:10,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:10,174 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:10,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 14:34:10,174 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:10,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash 34890641, now seen corresponding path program 13 times [2024-10-11 14:34:10,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:10,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029368914] [2024-10-11 14:34:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:10,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:10,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029368914] [2024-10-11 14:34:10,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029368914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:10,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:10,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479987770] [2024-10-11 14:34:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:10,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:10,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:10,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 150 transitions, 1375 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:10,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:10,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:10,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:11,103 INFO L124 PetriNetUnfolderBase]: 2434/4336 cut-off events. [2024-10-11 14:34:11,104 INFO L125 PetriNetUnfolderBase]: For 35836/35898 co-relation queries the response was YES. [2024-10-11 14:34:11,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17852 conditions, 4336 events. 2434/4336 cut-off events. For 35836/35898 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 28504 event pairs, 846 based on Foata normal form. 17/4219 useless extension candidates. Maximal degree in co-relation 17795. Up to 3352 conditions per place. [2024-10-11 14:34:11,131 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 158 selfloop transitions, 37 changer transitions 4/206 dead transitions. [2024-10-11 14:34:11,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 206 transitions, 2084 flow [2024-10-11 14:34:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-10-11 14:34:11,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4524793388429752 [2024-10-11 14:34:11,133 INFO L175 Difference]: Start difference. First operand has 151 places, 150 transitions, 1375 flow. Second operand 11 states and 219 transitions. [2024-10-11 14:34:11,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 206 transitions, 2084 flow [2024-10-11 14:34:11,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 206 transitions, 1926 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:11,183 INFO L231 Difference]: Finished difference. Result has 157 places, 154 transitions, 1344 flow [2024-10-11 14:34:11,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1344, PETRI_PLACES=157, PETRI_TRANSITIONS=154} [2024-10-11 14:34:11,184 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-10-11 14:34:11,184 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 154 transitions, 1344 flow [2024-10-11 14:34:11,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:11,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:11,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:11,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 14:34:11,184 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:11,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1688417889, now seen corresponding path program 14 times [2024-10-11 14:34:11,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:11,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110569356] [2024-10-11 14:34:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:11,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:11,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110569356] [2024-10-11 14:34:11,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110569356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:11,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:11,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:11,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870271578] [2024-10-11 14:34:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:11,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:11,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:11,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:11,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:11,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:11,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 154 transitions, 1344 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:11,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:11,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:11,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:12,093 INFO L124 PetriNetUnfolderBase]: 2434/4328 cut-off events. [2024-10-11 14:34:12,093 INFO L125 PetriNetUnfolderBase]: For 32233/32313 co-relation queries the response was YES. [2024-10-11 14:34:12,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17373 conditions, 4328 events. 2434/4328 cut-off events. For 32233/32313 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 28516 event pairs, 850 based on Foata normal form. 33/4235 useless extension candidates. Maximal degree in co-relation 17313. Up to 3348 conditions per place. [2024-10-11 14:34:12,121 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 156 selfloop transitions, 41 changer transitions 4/208 dead transitions. [2024-10-11 14:34:12,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 208 transitions, 2025 flow [2024-10-11 14:34:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-10-11 14:34:12,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-10-11 14:34:12,122 INFO L175 Difference]: Start difference. First operand has 157 places, 154 transitions, 1344 flow. Second operand 11 states and 218 transitions. [2024-10-11 14:34:12,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 208 transitions, 2025 flow [2024-10-11 14:34:12,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 208 transitions, 1919 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:12,155 INFO L231 Difference]: Finished difference. Result has 161 places, 158 transitions, 1384 flow [2024-10-11 14:34:12,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1384, PETRI_PLACES=161, PETRI_TRANSITIONS=158} [2024-10-11 14:34:12,156 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-10-11 14:34:12,156 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 158 transitions, 1384 flow [2024-10-11 14:34:12,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:12,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:12,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:12,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 14:34:12,157 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:12,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:12,157 INFO L85 PathProgramCache]: Analyzing trace with hash -147797197, now seen corresponding path program 15 times [2024-10-11 14:34:12,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:12,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515003071] [2024-10-11 14:34:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:12,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:12,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:12,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515003071] [2024-10-11 14:34:12,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515003071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:12,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:12,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:12,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702373086] [2024-10-11 14:34:12,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:12,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:12,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:12,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:12,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:12,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 158 transitions, 1384 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:12,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:12,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:12,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:13,333 INFO L124 PetriNetUnfolderBase]: 2470/4394 cut-off events. [2024-10-11 14:34:13,333 INFO L125 PetriNetUnfolderBase]: For 32135/32215 co-relation queries the response was YES. [2024-10-11 14:34:13,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17541 conditions, 4394 events. 2470/4394 cut-off events. For 32135/32215 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29088 event pairs, 912 based on Foata normal form. 33/4289 useless extension candidates. Maximal degree in co-relation 17479. Up to 3482 conditions per place. [2024-10-11 14:34:13,365 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 160 selfloop transitions, 37 changer transitions 3/207 dead transitions. [2024-10-11 14:34:13,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 207 transitions, 2040 flow [2024-10-11 14:34:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-10-11 14:34:13,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4380165289256198 [2024-10-11 14:34:13,367 INFO L175 Difference]: Start difference. First operand has 161 places, 158 transitions, 1384 flow. Second operand 11 states and 212 transitions. [2024-10-11 14:34:13,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 207 transitions, 2040 flow [2024-10-11 14:34:13,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 207 transitions, 1916 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:13,404 INFO L231 Difference]: Finished difference. Result has 165 places, 161 transitions, 1386 flow [2024-10-11 14:34:13,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1386, PETRI_PLACES=165, PETRI_TRANSITIONS=161} [2024-10-11 14:34:13,404 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 122 predicate places. [2024-10-11 14:34:13,404 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 161 transitions, 1386 flow [2024-10-11 14:34:13,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:13,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:13,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:13,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 14:34:13,405 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:13,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1793740559, now seen corresponding path program 16 times [2024-10-11 14:34:13,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:13,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177528463] [2024-10-11 14:34:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:13,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:13,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177528463] [2024-10-11 14:34:13,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177528463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:13,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:13,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:13,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589393661] [2024-10-11 14:34:13,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:13,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:13,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:13,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:13,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:13,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 161 transitions, 1386 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:13,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:13,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:13,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:14,438 INFO L124 PetriNetUnfolderBase]: 2470/4407 cut-off events. [2024-10-11 14:34:14,438 INFO L125 PetriNetUnfolderBase]: For 31361/31441 co-relation queries the response was YES. [2024-10-11 14:34:14,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17415 conditions, 4407 events. 2470/4407 cut-off events. For 31361/31441 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 29294 event pairs, 919 based on Foata normal form. 25/4294 useless extension candidates. Maximal degree in co-relation 17351. Up to 3495 conditions per place. [2024-10-11 14:34:14,474 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 162 selfloop transitions, 35 changer transitions 3/207 dead transitions. [2024-10-11 14:34:14,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 207 transitions, 2014 flow [2024-10-11 14:34:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:14,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-10-11 14:34:14,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-10-11 14:34:14,476 INFO L175 Difference]: Start difference. First operand has 165 places, 161 transitions, 1386 flow. Second operand 11 states and 209 transitions. [2024-10-11 14:34:14,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 207 transitions, 2014 flow [2024-10-11 14:34:14,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 207 transitions, 1906 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:14,517 INFO L231 Difference]: Finished difference. Result has 169 places, 163 transitions, 1374 flow [2024-10-11 14:34:14,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1374, PETRI_PLACES=169, PETRI_TRANSITIONS=163} [2024-10-11 14:34:14,518 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-10-11 14:34:14,518 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 163 transitions, 1374 flow [2024-10-11 14:34:14,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:14,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:14,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:14,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 14:34:14,519 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:14,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash -854692307, now seen corresponding path program 17 times [2024-10-11 14:34:14,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:14,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356675983] [2024-10-11 14:34:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:14,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:15,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356675983] [2024-10-11 14:34:15,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356675983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:15,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:15,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:15,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281443847] [2024-10-11 14:34:15,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:15,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:15,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:15,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:15,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:15,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:15,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 163 transitions, 1374 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:15,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:15,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:15,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:15,810 INFO L124 PetriNetUnfolderBase]: 2709/4861 cut-off events. [2024-10-11 14:34:15,810 INFO L125 PetriNetUnfolderBase]: For 40260/40316 co-relation queries the response was YES. [2024-10-11 14:34:15,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19913 conditions, 4861 events. 2709/4861 cut-off events. For 40260/40316 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 33343 event pairs, 928 based on Foata normal form. 11/4723 useless extension candidates. Maximal degree in co-relation 19847. Up to 3530 conditions per place. [2024-10-11 14:34:15,844 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 189 selfloop transitions, 44 changer transitions 3/243 dead transitions. [2024-10-11 14:34:15,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 243 transitions, 2447 flow [2024-10-11 14:34:15,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:34:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:34:15,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 247 transitions. [2024-10-11 14:34:15,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4678030303030303 [2024-10-11 14:34:15,846 INFO L175 Difference]: Start difference. First operand has 169 places, 163 transitions, 1374 flow. Second operand 12 states and 247 transitions. [2024-10-11 14:34:15,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 243 transitions, 2447 flow [2024-10-11 14:34:15,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 243 transitions, 2379 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:15,891 INFO L231 Difference]: Finished difference. Result has 176 places, 175 transitions, 1643 flow [2024-10-11 14:34:15,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1643, PETRI_PLACES=176, PETRI_TRANSITIONS=175} [2024-10-11 14:34:15,892 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2024-10-11 14:34:15,892 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 175 transitions, 1643 flow [2024-10-11 14:34:15,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:15,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:15,892 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:15,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 14:34:15,892 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:15,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:15,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1087899601, now seen corresponding path program 18 times [2024-10-11 14:34:15,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:15,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920799684] [2024-10-11 14:34:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:15,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:16,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:16,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920799684] [2024-10-11 14:34:16,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920799684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:16,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:16,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:16,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591641539] [2024-10-11 14:34:16,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:16,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:16,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:16,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:16,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:16,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 175 transitions, 1643 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:16,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:16,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:16,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:17,062 INFO L124 PetriNetUnfolderBase]: 2908/5234 cut-off events. [2024-10-11 14:34:17,062 INFO L125 PetriNetUnfolderBase]: For 56525/56653 co-relation queries the response was YES. [2024-10-11 14:34:17,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22834 conditions, 5234 events. 2908/5234 cut-off events. For 56525/56653 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 36668 event pairs, 950 based on Foata normal form. 41/5119 useless extension candidates. Maximal degree in co-relation 22764. Up to 3717 conditions per place. [2024-10-11 14:34:17,103 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 187 selfloop transitions, 54 changer transitions 3/251 dead transitions. [2024-10-11 14:34:17,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 251 transitions, 2788 flow [2024-10-11 14:34:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:34:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:34:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 246 transitions. [2024-10-11 14:34:17,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-10-11 14:34:17,104 INFO L175 Difference]: Start difference. First operand has 176 places, 175 transitions, 1643 flow. Second operand 12 states and 246 transitions. [2024-10-11 14:34:17,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 251 transitions, 2788 flow [2024-10-11 14:34:17,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 251 transitions, 2562 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:17,157 INFO L231 Difference]: Finished difference. Result has 186 places, 186 transitions, 1818 flow [2024-10-11 14:34:17,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1818, PETRI_PLACES=186, PETRI_TRANSITIONS=186} [2024-10-11 14:34:17,157 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 143 predicate places. [2024-10-11 14:34:17,157 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 186 transitions, 1818 flow [2024-10-11 14:34:17,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:17,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:17,158 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:17,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 14:34:17,158 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:17,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash 506104315, now seen corresponding path program 19 times [2024-10-11 14:34:17,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:17,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326707284] [2024-10-11 14:34:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:17,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:17,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326707284] [2024-10-11 14:34:17,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326707284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:17,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:17,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:17,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31567742] [2024-10-11 14:34:17,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:17,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:17,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:17,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 186 transitions, 1818 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:17,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:17,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:17,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:18,360 INFO L124 PetriNetUnfolderBase]: 3004/5409 cut-off events. [2024-10-11 14:34:18,361 INFO L125 PetriNetUnfolderBase]: For 68326/68434 co-relation queries the response was YES. [2024-10-11 14:34:18,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24308 conditions, 5409 events. 3004/5409 cut-off events. For 68326/68434 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 38272 event pairs, 1057 based on Foata normal form. 17/5265 useless extension candidates. Maximal degree in co-relation 24233. Up to 3989 conditions per place. [2024-10-11 14:34:18,413 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 196 selfloop transitions, 49 changer transitions 3/255 dead transitions. [2024-10-11 14:34:18,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 255 transitions, 2852 flow [2024-10-11 14:34:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:34:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:34:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 243 transitions. [2024-10-11 14:34:18,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-10-11 14:34:18,418 INFO L175 Difference]: Start difference. First operand has 186 places, 186 transitions, 1818 flow. Second operand 12 states and 243 transitions. [2024-10-11 14:34:18,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 255 transitions, 2852 flow [2024-10-11 14:34:18,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 255 transitions, 2645 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-10-11 14:34:18,530 INFO L231 Difference]: Finished difference. Result has 193 places, 192 transitions, 1875 flow [2024-10-11 14:34:18,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1875, PETRI_PLACES=193, PETRI_TRANSITIONS=192} [2024-10-11 14:34:18,531 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2024-10-11 14:34:18,531 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 192 transitions, 1875 flow [2024-10-11 14:34:18,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:18,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:18,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:18,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 14:34:18,532 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:18,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1722351493, now seen corresponding path program 20 times [2024-10-11 14:34:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:18,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399783751] [2024-10-11 14:34:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:18,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:18,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:18,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399783751] [2024-10-11 14:34:18,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399783751] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:18,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:18,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376281097] [2024-10-11 14:34:18,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:18,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:18,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:18,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:18,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:18,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 192 transitions, 1875 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:18,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:18,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:18,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:19,975 INFO L124 PetriNetUnfolderBase]: 3004/5427 cut-off events. [2024-10-11 14:34:19,976 INFO L125 PetriNetUnfolderBase]: For 66851/66931 co-relation queries the response was YES. [2024-10-11 14:34:20,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24185 conditions, 5427 events. 3004/5427 cut-off events. For 66851/66931 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 38597 event pairs, 1077 based on Foata normal form. 33/5297 useless extension candidates. Maximal degree in co-relation 24107. Up to 4066 conditions per place. [2024-10-11 14:34:20,040 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 193 selfloop transitions, 51 changer transitions 4/255 dead transitions. [2024-10-11 14:34:20,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 255 transitions, 2791 flow [2024-10-11 14:34:20,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:34:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:34:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 240 transitions. [2024-10-11 14:34:20,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-10-11 14:34:20,041 INFO L175 Difference]: Start difference. First operand has 193 places, 192 transitions, 1875 flow. Second operand 12 states and 240 transitions. [2024-10-11 14:34:20,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 255 transitions, 2791 flow [2024-10-11 14:34:20,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 255 transitions, 2638 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:20,192 INFO L231 Difference]: Finished difference. Result has 198 places, 196 transitions, 1902 flow [2024-10-11 14:34:20,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1902, PETRI_PLACES=198, PETRI_TRANSITIONS=196} [2024-10-11 14:34:20,193 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 155 predicate places. [2024-10-11 14:34:20,193 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 196 transitions, 1902 flow [2024-10-11 14:34:20,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:20,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:20,193 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:20,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 14:34:20,194 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:20,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1170385189, now seen corresponding path program 21 times [2024-10-11 14:34:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905560516] [2024-10-11 14:34:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:20,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:20,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905560516] [2024-10-11 14:34:20,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905560516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:20,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:20,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239435135] [2024-10-11 14:34:20,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:20,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:20,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:20,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:20,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 196 transitions, 1902 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:20,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:20,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:20,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:21,662 INFO L124 PetriNetUnfolderBase]: 3132/5656 cut-off events. [2024-10-11 14:34:21,662 INFO L125 PetriNetUnfolderBase]: For 74269/74455 co-relation queries the response was YES. [2024-10-11 14:34:21,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25646 conditions, 5656 events. 3132/5656 cut-off events. For 74269/74455 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 40550 event pairs, 1303 based on Foata normal form. 41/5517 useless extension candidates. Maximal degree in co-relation 25566. Up to 4475 conditions per place. [2024-10-11 14:34:21,707 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 213 selfloop transitions, 36 changer transitions 3/259 dead transitions. [2024-10-11 14:34:21,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 259 transitions, 3093 flow [2024-10-11 14:34:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-10-11 14:34:21,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-10-11 14:34:21,708 INFO L175 Difference]: Start difference. First operand has 198 places, 196 transitions, 1902 flow. Second operand 11 states and 223 transitions. [2024-10-11 14:34:21,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 259 transitions, 3093 flow [2024-10-11 14:34:21,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 259 transitions, 2939 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-10-11 14:34:21,803 INFO L231 Difference]: Finished difference. Result has 203 places, 205 transitions, 2125 flow [2024-10-11 14:34:21,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2125, PETRI_PLACES=203, PETRI_TRANSITIONS=205} [2024-10-11 14:34:21,804 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2024-10-11 14:34:21,804 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 205 transitions, 2125 flow [2024-10-11 14:34:21,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:21,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:21,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:21,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 14:34:21,805 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:21,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:21,805 INFO L85 PathProgramCache]: Analyzing trace with hash 545898423, now seen corresponding path program 22 times [2024-10-11 14:34:21,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:21,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063970254] [2024-10-11 14:34:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:21,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:22,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:22,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063970254] [2024-10-11 14:34:22,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063970254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:22,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:22,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:22,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434278046] [2024-10-11 14:34:22,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:22,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:22,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:22,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:22,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:22,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 205 transitions, 2125 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:22,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:22,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:22,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:23,281 INFO L124 PetriNetUnfolderBase]: 3334/6006 cut-off events. [2024-10-11 14:34:23,281 INFO L125 PetriNetUnfolderBase]: For 106986/107312 co-relation queries the response was YES. [2024-10-11 14:34:23,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28842 conditions, 6006 events. 3334/6006 cut-off events. For 106986/107312 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 43522 event pairs, 1355 based on Foata normal form. 41/5851 useless extension candidates. Maximal degree in co-relation 28758. Up to 4717 conditions per place. [2024-10-11 14:34:23,331 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 226 selfloop transitions, 37 changer transitions 3/273 dead transitions. [2024-10-11 14:34:23,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 273 transitions, 3380 flow [2024-10-11 14:34:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-10-11 14:34:23,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2024-10-11 14:34:23,336 INFO L175 Difference]: Start difference. First operand has 203 places, 205 transitions, 2125 flow. Second operand 11 states and 228 transitions. [2024-10-11 14:34:23,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 273 transitions, 3380 flow [2024-10-11 14:34:23,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 273 transitions, 3090 flow, removed 128 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:23,442 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 2224 flow [2024-10-11 14:34:23,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2224, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2024-10-11 14:34:23,443 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 169 predicate places. [2024-10-11 14:34:23,443 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 2224 flow [2024-10-11 14:34:23,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:23,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:23,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:23,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 14:34:23,444 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:23,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash -9998039, now seen corresponding path program 23 times [2024-10-11 14:34:23,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:23,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576262765] [2024-10-11 14:34:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:23,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:23,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576262765] [2024-10-11 14:34:23,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576262765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:23,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234364822] [2024-10-11 14:34:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:23,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:23,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:23,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 2224 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:23,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:23,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:23,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:24,825 INFO L124 PetriNetUnfolderBase]: 3395/6116 cut-off events. [2024-10-11 14:34:24,825 INFO L125 PetriNetUnfolderBase]: For 106404/106844 co-relation queries the response was YES. [2024-10-11 14:34:24,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28868 conditions, 6116 events. 3395/6116 cut-off events. For 106404/106844 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 44473 event pairs, 1449 based on Foata normal form. 55/5971 useless extension candidates. Maximal degree in co-relation 28779. Up to 4956 conditions per place. [2024-10-11 14:34:24,872 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 220 selfloop transitions, 36 changer transitions 4/267 dead transitions. [2024-10-11 14:34:24,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 267 transitions, 3176 flow [2024-10-11 14:34:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:24,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-10-11 14:34:24,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44421487603305787 [2024-10-11 14:34:24,874 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 2224 flow. Second operand 11 states and 215 transitions. [2024-10-11 14:34:24,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 267 transitions, 3176 flow [2024-10-11 14:34:24,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 267 transitions, 2966 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:24,980 INFO L231 Difference]: Finished difference. Result has 220 places, 221 transitions, 2225 flow [2024-10-11 14:34:24,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2225, PETRI_PLACES=220, PETRI_TRANSITIONS=221} [2024-10-11 14:34:24,981 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-10-11 14:34:24,981 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 221 transitions, 2225 flow [2024-10-11 14:34:24,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:24,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:24,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:24,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-11 14:34:24,982 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:24,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1881834813, now seen corresponding path program 24 times [2024-10-11 14:34:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:24,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53029185] [2024-10-11 14:34:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:25,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:25,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53029185] [2024-10-11 14:34:25,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53029185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:25,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:25,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:25,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234926320] [2024-10-11 14:34:25,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:25,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:25,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:25,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:25,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:25,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 221 transitions, 2225 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:25,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:25,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:25,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:26,421 INFO L124 PetriNetUnfolderBase]: 3540/6360 cut-off events. [2024-10-11 14:34:26,421 INFO L125 PetriNetUnfolderBase]: For 106197/106413 co-relation queries the response was YES. [2024-10-11 14:34:26,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29864 conditions, 6360 events. 3540/6360 cut-off events. For 106197/106413 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 46554 event pairs, 1453 based on Foata normal form. 61/6218 useless extension candidates. Maximal degree in co-relation 29771. Up to 4980 conditions per place. [2024-10-11 14:34:26,485 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 231 selfloop transitions, 42 changer transitions 3/283 dead transitions. [2024-10-11 14:34:26,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 283 transitions, 3433 flow [2024-10-11 14:34:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2024-10-11 14:34:26,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4669421487603306 [2024-10-11 14:34:26,487 INFO L175 Difference]: Start difference. First operand has 220 places, 221 transitions, 2225 flow. Second operand 11 states and 226 transitions. [2024-10-11 14:34:26,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 283 transitions, 3433 flow [2024-10-11 14:34:26,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 283 transitions, 3271 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:26,673 INFO L231 Difference]: Finished difference. Result has 227 places, 228 transitions, 2418 flow [2024-10-11 14:34:26,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2418, PETRI_PLACES=227, PETRI_TRANSITIONS=228} [2024-10-11 14:34:26,673 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-10-11 14:34:26,673 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 228 transitions, 2418 flow [2024-10-11 14:34:26,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:26,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:26,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:26,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-11 14:34:26,674 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:26,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash -951654555, now seen corresponding path program 25 times [2024-10-11 14:34:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:26,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837432800] [2024-10-11 14:34:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:26,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:27,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:27,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837432800] [2024-10-11 14:34:27,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837432800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:27,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:27,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:27,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175364736] [2024-10-11 14:34:27,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:27,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:27,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:27,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:27,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 228 transitions, 2418 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:27,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:27,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:27,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:28,472 INFO L124 PetriNetUnfolderBase]: 3646/6583 cut-off events. [2024-10-11 14:34:28,472 INFO L125 PetriNetUnfolderBase]: For 135227/135458 co-relation queries the response was YES. [2024-10-11 14:34:28,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32273 conditions, 6583 events. 3646/6583 cut-off events. For 135227/135458 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 48863 event pairs, 1549 based on Foata normal form. 51/6415 useless extension candidates. Maximal degree in co-relation 32176. Up to 5291 conditions per place. [2024-10-11 14:34:28,550 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 246 selfloop transitions, 35 changer transitions 3/291 dead transitions. [2024-10-11 14:34:28,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 291 transitions, 3618 flow [2024-10-11 14:34:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-10-11 14:34:28,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-10-11 14:34:28,553 INFO L175 Difference]: Start difference. First operand has 227 places, 228 transitions, 2418 flow. Second operand 11 states and 225 transitions. [2024-10-11 14:34:28,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 291 transitions, 3618 flow [2024-10-11 14:34:28,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 291 transitions, 3374 flow, removed 102 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:28,791 INFO L231 Difference]: Finished difference. Result has 234 places, 234 transitions, 2435 flow [2024-10-11 14:34:28,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2435, PETRI_PLACES=234, PETRI_TRANSITIONS=234} [2024-10-11 14:34:28,791 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 191 predicate places. [2024-10-11 14:34:28,792 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 234 transitions, 2435 flow [2024-10-11 14:34:28,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:28,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:28,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:28,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-11 14:34:28,793 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:28,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:28,794 INFO L85 PathProgramCache]: Analyzing trace with hash -835580977, now seen corresponding path program 26 times [2024-10-11 14:34:28,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:28,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931174406] [2024-10-11 14:34:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:28,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931174406] [2024-10-11 14:34:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931174406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:29,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669985870] [2024-10-11 14:34:29,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:29,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:29,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:29,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 234 transitions, 2435 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:29,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:29,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:29,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:30,310 INFO L124 PetriNetUnfolderBase]: 3708/6679 cut-off events. [2024-10-11 14:34:30,311 INFO L125 PetriNetUnfolderBase]: For 137403/137631 co-relation queries the response was YES. [2024-10-11 14:34:30,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32346 conditions, 6679 events. 3708/6679 cut-off events. For 137403/137631 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 49620 event pairs, 1587 based on Foata normal form. 57/6516 useless extension candidates. Maximal degree in co-relation 32245. Up to 5378 conditions per place. [2024-10-11 14:34:30,378 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 245 selfloop transitions, 37 changer transitions 4/293 dead transitions. [2024-10-11 14:34:30,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 293 transitions, 3581 flow [2024-10-11 14:34:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-10-11 14:34:30,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-10-11 14:34:30,379 INFO L175 Difference]: Start difference. First operand has 234 places, 234 transitions, 2435 flow. Second operand 11 states and 224 transitions. [2024-10-11 14:34:30,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 293 transitions, 3581 flow [2024-10-11 14:34:30,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 293 transitions, 3398 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:30,600 INFO L231 Difference]: Finished difference. Result has 240 places, 238 transitions, 2502 flow [2024-10-11 14:34:30,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2502, PETRI_PLACES=240, PETRI_TRANSITIONS=238} [2024-10-11 14:34:30,601 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2024-10-11 14:34:30,601 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 238 transitions, 2502 flow [2024-10-11 14:34:30,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:30,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:30,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:30,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-11 14:34:30,602 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:30,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash -259366763, now seen corresponding path program 27 times [2024-10-11 14:34:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533474094] [2024-10-11 14:34:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:30,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:30,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533474094] [2024-10-11 14:34:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533474094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:30,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:30,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151676895] [2024-10-11 14:34:30,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:30,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:30,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:31,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:31,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 238 transitions, 2502 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:31,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:31,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:31,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:31,989 INFO L124 PetriNetUnfolderBase]: 3804/6871 cut-off events. [2024-10-11 14:34:31,989 INFO L125 PetriNetUnfolderBase]: For 149503/149715 co-relation queries the response was YES. [2024-10-11 14:34:32,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33798 conditions, 6871 events. 3804/6871 cut-off events. For 149503/149715 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 51605 event pairs, 1646 based on Foata normal form. 48/6694 useless extension candidates. Maximal degree in co-relation 33694. Up to 5545 conditions per place. [2024-10-11 14:34:32,058 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 254 selfloop transitions, 36 changer transitions 3/300 dead transitions. [2024-10-11 14:34:32,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 300 transitions, 3757 flow [2024-10-11 14:34:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-10-11 14:34:32,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-10-11 14:34:32,059 INFO L175 Difference]: Start difference. First operand has 240 places, 238 transitions, 2502 flow. Second operand 11 states and 225 transitions. [2024-10-11 14:34:32,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 300 transitions, 3757 flow [2024-10-11 14:34:32,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 300 transitions, 3562 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-10-11 14:34:32,226 INFO L231 Difference]: Finished difference. Result has 246 places, 244 transitions, 2586 flow [2024-10-11 14:34:32,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2586, PETRI_PLACES=246, PETRI_TRANSITIONS=244} [2024-10-11 14:34:32,227 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-10-11 14:34:32,227 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 244 transitions, 2586 flow [2024-10-11 14:34:32,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:32,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:32,228 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:32,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-11 14:34:32,228 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:32,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash 186554381, now seen corresponding path program 28 times [2024-10-11 14:34:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:32,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057913751] [2024-10-11 14:34:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:32,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:32,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:32,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057913751] [2024-10-11 14:34:32,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057913751] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:32,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:32,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:32,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689937423] [2024-10-11 14:34:32,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:32,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:32,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:32,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:32,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 244 transitions, 2586 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:32,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:32,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:32,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:33,596 INFO L124 PetriNetUnfolderBase]: 3804/6879 cut-off events. [2024-10-11 14:34:33,596 INFO L125 PetriNetUnfolderBase]: For 149090/149302 co-relation queries the response was YES. [2024-10-11 14:34:33,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33615 conditions, 6879 events. 3804/6879 cut-off events. For 149090/149302 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 51761 event pairs, 1641 based on Foata normal form. 54/6707 useless extension candidates. Maximal degree in co-relation 33507. Up to 5583 conditions per place. [2024-10-11 14:34:33,658 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 252 selfloop transitions, 37 changer transitions 4/300 dead transitions. [2024-10-11 14:34:33,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 300 transitions, 3661 flow [2024-10-11 14:34:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-10-11 14:34:33,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45867768595041325 [2024-10-11 14:34:33,659 INFO L175 Difference]: Start difference. First operand has 246 places, 244 transitions, 2586 flow. Second operand 11 states and 222 transitions. [2024-10-11 14:34:33,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 300 transitions, 3661 flow [2024-10-11 14:34:33,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 300 transitions, 3461 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:33,846 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 2535 flow [2024-10-11 14:34:33,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2386, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2535, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2024-10-11 14:34:33,847 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2024-10-11 14:34:33,847 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 2535 flow [2024-10-11 14:34:33,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:33,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:33,847 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:33,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-11 14:34:33,847 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:33,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash 680073123, now seen corresponding path program 29 times [2024-10-11 14:34:33,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:33,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867077298] [2024-10-11 14:34:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:33,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:34,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:34,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867077298] [2024-10-11 14:34:34,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867077298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:34,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:34,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40995407] [2024-10-11 14:34:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:34,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:34,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:34,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:34,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:34,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 2535 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:34,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:34,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:34,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:35,503 INFO L124 PetriNetUnfolderBase]: 3840/6945 cut-off events. [2024-10-11 14:34:35,504 INFO L125 PetriNetUnfolderBase]: For 145012/145248 co-relation queries the response was YES. [2024-10-11 14:34:35,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33303 conditions, 6945 events. 3840/6945 cut-off events. For 145012/145248 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 52378 event pairs, 1699 based on Foata normal form. 70/6779 useless extension candidates. Maximal degree in co-relation 33192. Up to 5714 conditions per place. [2024-10-11 14:34:35,560 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 250 selfloop transitions, 37 changer transitions 3/297 dead transitions. [2024-10-11 14:34:35,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 297 transitions, 3523 flow [2024-10-11 14:34:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-10-11 14:34:35,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44421487603305787 [2024-10-11 14:34:35,561 INFO L175 Difference]: Start difference. First operand has 252 places, 248 transitions, 2535 flow. Second operand 11 states and 215 transitions. [2024-10-11 14:34:35,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 297 transitions, 3523 flow [2024-10-11 14:34:35,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 297 transitions, 3387 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:35,771 INFO L231 Difference]: Finished difference. Result has 256 places, 251 transitions, 2545 flow [2024-10-11 14:34:35,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2545, PETRI_PLACES=256, PETRI_TRANSITIONS=251} [2024-10-11 14:34:35,772 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 213 predicate places. [2024-10-11 14:34:35,772 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 251 transitions, 2545 flow [2024-10-11 14:34:35,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:35,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:35,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:35,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-11 14:34:35,772 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:35,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:35,773 INFO L85 PathProgramCache]: Analyzing trace with hash -860547569, now seen corresponding path program 30 times [2024-10-11 14:34:35,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:35,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842793520] [2024-10-11 14:34:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:35,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:36,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:36,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842793520] [2024-10-11 14:34:36,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842793520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:36,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:36,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:36,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920363354] [2024-10-11 14:34:36,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:36,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:36,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:36,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:36,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:36,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 251 transitions, 2545 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:36,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:36,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:36,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:37,406 INFO L124 PetriNetUnfolderBase]: 3840/6964 cut-off events. [2024-10-11 14:34:37,406 INFO L125 PetriNetUnfolderBase]: For 143299/143535 co-relation queries the response was YES. [2024-10-11 14:34:37,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33108 conditions, 6964 events. 3840/6964 cut-off events. For 143299/143535 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 52738 event pairs, 1659 based on Foata normal form. 70/6804 useless extension candidates. Maximal degree in co-relation 32995. Up to 5648 conditions per place. [2024-10-11 14:34:37,483 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 253 selfloop transitions, 41 changer transitions 4/305 dead transitions. [2024-10-11 14:34:37,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 305 transitions, 3576 flow [2024-10-11 14:34:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-10-11 14:34:37,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2024-10-11 14:34:37,485 INFO L175 Difference]: Start difference. First operand has 256 places, 251 transitions, 2545 flow. Second operand 11 states and 221 transitions. [2024-10-11 14:34:37,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 305 transitions, 3576 flow [2024-10-11 14:34:37,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 305 transitions, 3440 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:37,703 INFO L231 Difference]: Finished difference. Result has 260 places, 255 transitions, 2579 flow [2024-10-11 14:34:37,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2579, PETRI_PLACES=260, PETRI_TRANSITIONS=255} [2024-10-11 14:34:37,707 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-10-11 14:34:37,708 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 255 transitions, 2579 flow [2024-10-11 14:34:37,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:37,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:37,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:37,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-11 14:34:37,708 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:37,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash 840245459, now seen corresponding path program 31 times [2024-10-11 14:34:37,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:37,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073753965] [2024-10-11 14:34:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:37,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:38,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073753965] [2024-10-11 14:34:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073753965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:38,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:38,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539745275] [2024-10-11 14:34:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:38,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:38,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:38,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:38,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:38,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:38,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 255 transitions, 2579 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:38,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:38,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:38,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:39,469 INFO L124 PetriNetUnfolderBase]: 3840/6955 cut-off events. [2024-10-11 14:34:39,470 INFO L125 PetriNetUnfolderBase]: For 143493/143727 co-relation queries the response was YES. [2024-10-11 14:34:39,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33134 conditions, 6955 events. 3840/6955 cut-off events. For 143493/143727 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 52586 event pairs, 1730 based on Foata normal form. 62/6780 useless extension candidates. Maximal degree in co-relation 33019. Up to 5726 conditions per place. [2024-10-11 14:34:39,549 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 256 selfloop transitions, 35 changer transitions 3/301 dead transitions. [2024-10-11 14:34:39,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 301 transitions, 3525 flow [2024-10-11 14:34:39,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-10-11 14:34:39,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4380165289256198 [2024-10-11 14:34:39,550 INFO L175 Difference]: Start difference. First operand has 260 places, 255 transitions, 2579 flow. Second operand 11 states and 212 transitions. [2024-10-11 14:34:39,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 301 transitions, 3525 flow [2024-10-11 14:34:39,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 301 transitions, 3369 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:39,818 INFO L231 Difference]: Finished difference. Result has 264 places, 257 transitions, 2517 flow [2024-10-11 14:34:39,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2517, PETRI_PLACES=264, PETRI_TRANSITIONS=257} [2024-10-11 14:34:39,818 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 221 predicate places. [2024-10-11 14:34:39,818 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 257 transitions, 2517 flow [2024-10-11 14:34:39,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:39,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:39,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:39,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-10-11 14:34:39,819 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:39,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash -449187067, now seen corresponding path program 32 times [2024-10-11 14:34:39,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:39,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730551005] [2024-10-11 14:34:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:39,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:40,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:40,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730551005] [2024-10-11 14:34:40,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730551005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:40,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:40,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:40,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876030675] [2024-10-11 14:34:40,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:40,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:40,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:40,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:40,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:40,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:40,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 257 transitions, 2517 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:40,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:40,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:40,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:41,467 INFO L124 PetriNetUnfolderBase]: 3971/7189 cut-off events. [2024-10-11 14:34:41,467 INFO L125 PetriNetUnfolderBase]: For 156970/157232 co-relation queries the response was YES. [2024-10-11 14:34:41,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34793 conditions, 7189 events. 3971/7189 cut-off events. For 156970/157232 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 54760 event pairs, 1750 based on Foata normal form. 54/7001 useless extension candidates. Maximal degree in co-relation 34676. Up to 5839 conditions per place. [2024-10-11 14:34:41,553 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 272 selfloop transitions, 35 changer transitions 3/317 dead transitions. [2024-10-11 14:34:41,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 317 transitions, 3986 flow [2024-10-11 14:34:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-10-11 14:34:41,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45867768595041325 [2024-10-11 14:34:41,554 INFO L175 Difference]: Start difference. First operand has 264 places, 257 transitions, 2517 flow. Second operand 11 states and 222 transitions. [2024-10-11 14:34:41,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 317 transitions, 3986 flow [2024-10-11 14:34:41,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 317 transitions, 3918 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:41,802 INFO L231 Difference]: Finished difference. Result has 270 places, 266 transitions, 2928 flow [2024-10-11 14:34:41,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2928, PETRI_PLACES=270, PETRI_TRANSITIONS=266} [2024-10-11 14:34:41,803 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 227 predicate places. [2024-10-11 14:34:41,803 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 266 transitions, 2928 flow [2024-10-11 14:34:41,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:41,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:41,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:41,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-11 14:34:41,803 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:41,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:41,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2106552235, now seen corresponding path program 33 times [2024-10-11 14:34:41,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:41,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960348316] [2024-10-11 14:34:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:41,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:42,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:42,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960348316] [2024-10-11 14:34:42,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960348316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:42,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:42,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:42,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717923142] [2024-10-11 14:34:42,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:42,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:42,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:42,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:42,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:42,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:42,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 266 transitions, 2928 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:42,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:42,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:42,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:43,356 INFO L124 PetriNetUnfolderBase]: 4133/7425 cut-off events. [2024-10-11 14:34:43,356 INFO L125 PetriNetUnfolderBase]: For 214230/214676 co-relation queries the response was YES. [2024-10-11 14:34:43,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38603 conditions, 7425 events. 4133/7425 cut-off events. For 214230/214676 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 56453 event pairs, 1855 based on Foata normal form. 54/7239 useless extension candidates. Maximal degree in co-relation 38482. Up to 6025 conditions per place. [2024-10-11 14:34:43,453 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 284 selfloop transitions, 36 changer transitions 3/330 dead transitions. [2024-10-11 14:34:43,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 330 transitions, 4429 flow [2024-10-11 14:34:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2024-10-11 14:34:43,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4690082644628099 [2024-10-11 14:34:43,455 INFO L175 Difference]: Start difference. First operand has 270 places, 266 transitions, 2928 flow. Second operand 11 states and 227 transitions. [2024-10-11 14:34:43,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 330 transitions, 4429 flow [2024-10-11 14:34:43,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 330 transitions, 4099 flow, removed 149 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:43,765 INFO L231 Difference]: Finished difference. Result has 279 places, 275 transitions, 3039 flow [2024-10-11 14:34:43,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3039, PETRI_PLACES=279, PETRI_TRANSITIONS=275} [2024-10-11 14:34:43,766 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-10-11 14:34:43,766 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 275 transitions, 3039 flow [2024-10-11 14:34:43,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:43,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:43,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:43,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-10-11 14:34:43,766 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:43,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash -992200685, now seen corresponding path program 34 times [2024-10-11 14:34:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829843158] [2024-10-11 14:34:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:43,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:44,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:44,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829843158] [2024-10-11 14:34:44,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829843158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:44,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:44,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:44,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539465870] [2024-10-11 14:34:44,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:44,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:44,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:44,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:44,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:44,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:44,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 275 transitions, 3039 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:44,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:44,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:44,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:45,291 INFO L124 PetriNetUnfolderBase]: 4194/7535 cut-off events. [2024-10-11 14:34:45,292 INFO L125 PetriNetUnfolderBase]: For 228123/228647 co-relation queries the response was YES. [2024-10-11 14:34:45,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38961 conditions, 7535 events. 4194/7535 cut-off events. For 228123/228647 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 57524 event pairs, 1949 based on Foata normal form. 68/7359 useless extension candidates. Maximal degree in co-relation 38835. Up to 6264 conditions per place. [2024-10-11 14:34:45,431 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 278 selfloop transitions, 35 changer transitions 4/324 dead transitions. [2024-10-11 14:34:45,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 324 transitions, 4161 flow [2024-10-11 14:34:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-10-11 14:34:45,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2024-10-11 14:34:45,433 INFO L175 Difference]: Start difference. First operand has 279 places, 275 transitions, 3039 flow. Second operand 11 states and 214 transitions. [2024-10-11 14:34:45,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 324 transitions, 4161 flow [2024-10-11 14:34:45,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 324 transitions, 3863 flow, removed 133 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:45,887 INFO L231 Difference]: Finished difference. Result has 287 places, 281 transitions, 2996 flow [2024-10-11 14:34:45,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2996, PETRI_PLACES=287, PETRI_TRANSITIONS=281} [2024-10-11 14:34:45,888 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-10-11 14:34:45,888 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 281 transitions, 2996 flow [2024-10-11 14:34:45,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:45,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:45,888 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:45,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-10-11 14:34:45,889 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:45,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:45,889 INFO L85 PathProgramCache]: Analyzing trace with hash -908908113, now seen corresponding path program 35 times [2024-10-11 14:34:45,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:45,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100839811] [2024-10-11 14:34:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:45,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100839811] [2024-10-11 14:34:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100839811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:46,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:46,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:46,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520562765] [2024-10-11 14:34:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:46,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:46,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:46,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 281 transitions, 2996 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:46,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:46,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:46,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:47,934 INFO L124 PetriNetUnfolderBase]: 4345/7826 cut-off events. [2024-10-11 14:34:47,934 INFO L125 PetriNetUnfolderBase]: For 228730/229014 co-relation queries the response was YES. [2024-10-11 14:34:48,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39955 conditions, 7826 events. 4345/7826 cut-off events. For 228730/229014 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 60453 event pairs, 1913 based on Foata normal form. 74/7642 useless extension candidates. Maximal degree in co-relation 39825. Up to 6288 conditions per place. [2024-10-11 14:34:48,027 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 289 selfloop transitions, 41 changer transitions 3/340 dead transitions. [2024-10-11 14:34:48,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 340 transitions, 4466 flow [2024-10-11 14:34:48,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-10-11 14:34:48,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-10-11 14:34:48,029 INFO L175 Difference]: Start difference. First operand has 287 places, 281 transitions, 2996 flow. Second operand 11 states and 225 transitions. [2024-10-11 14:34:48,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 340 transitions, 4466 flow [2024-10-11 14:34:48,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 340 transitions, 4248 flow, removed 90 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:48,455 INFO L231 Difference]: Finished difference. Result has 294 places, 288 transitions, 3227 flow [2024-10-11 14:34:48,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2778, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3227, PETRI_PLACES=294, PETRI_TRANSITIONS=288} [2024-10-11 14:34:48,456 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-10-11 14:34:48,456 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 288 transitions, 3227 flow [2024-10-11 14:34:48,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:48,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:48,457 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:48,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-10-11 14:34:48,457 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:48,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:48,457 INFO L85 PathProgramCache]: Analyzing trace with hash -271201099, now seen corresponding path program 36 times [2024-10-11 14:34:48,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:48,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748777267] [2024-10-11 14:34:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:48,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:48,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748777267] [2024-10-11 14:34:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748777267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:48,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:48,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:48,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287263039] [2024-10-11 14:34:48,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:48,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:48,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:49,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:49,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 288 transitions, 3227 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:49,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:49,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:49,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:50,270 INFO L124 PetriNetUnfolderBase]: 4408/7953 cut-off events. [2024-10-11 14:34:50,271 INFO L125 PetriNetUnfolderBase]: For 265688/265976 co-relation queries the response was YES. [2024-10-11 14:34:50,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41773 conditions, 7953 events. 4408/7953 cut-off events. For 265688/265976 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 61876 event pairs, 1995 based on Foata normal form. 63/7754 useless extension candidates. Maximal degree in co-relation 41639. Up to 6521 conditions per place. [2024-10-11 14:34:50,373 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 303 selfloop transitions, 34 changer transitions 3/347 dead transitions. [2024-10-11 14:34:50,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 347 transitions, 4640 flow [2024-10-11 14:34:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-10-11 14:34:50,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-10-11 14:34:50,374 INFO L175 Difference]: Start difference. First operand has 294 places, 288 transitions, 3227 flow. Second operand 11 states and 224 transitions. [2024-10-11 14:34:50,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 347 transitions, 4640 flow [2024-10-11 14:34:51,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 347 transitions, 4314 flow, removed 144 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:51,090 INFO L231 Difference]: Finished difference. Result has 301 places, 293 transitions, 3213 flow [2024-10-11 14:34:51,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3213, PETRI_PLACES=301, PETRI_TRANSITIONS=293} [2024-10-11 14:34:51,091 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 258 predicate places. [2024-10-11 14:34:51,091 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 293 transitions, 3213 flow [2024-10-11 14:34:51,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:51,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:51,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:51,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-10-11 14:34:51,092 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:51,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:51,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1107766655, now seen corresponding path program 37 times [2024-10-11 14:34:51,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:51,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391011475] [2024-10-11 14:34:51,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:51,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:51,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391011475] [2024-10-11 14:34:51,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391011475] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:51,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:51,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940585964] [2024-10-11 14:34:51,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:51,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:51,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:51,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:51,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 293 transitions, 3213 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:51,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:51,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:51,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:52,667 INFO L124 PetriNetUnfolderBase]: 4408/7942 cut-off events. [2024-10-11 14:34:52,667 INFO L125 PetriNetUnfolderBase]: For 255908/256192 co-relation queries the response was YES. [2024-10-11 14:34:52,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40636 conditions, 7942 events. 4408/7942 cut-off events. For 255908/256192 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 61752 event pairs, 2019 based on Foata normal form. 69/7745 useless extension candidates. Maximal degree in co-relation 40498. Up to 6598 conditions per place. [2024-10-11 14:34:52,766 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 299 selfloop transitions, 33 changer transitions 3/342 dead transitions. [2024-10-11 14:34:52,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 342 transitions, 4376 flow [2024-10-11 14:34:52,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-10-11 14:34:52,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44421487603305787 [2024-10-11 14:34:52,768 INFO L175 Difference]: Start difference. First operand has 301 places, 293 transitions, 3213 flow. Second operand 11 states and 215 transitions. [2024-10-11 14:34:52,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 342 transitions, 4376 flow [2024-10-11 14:34:53,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 342 transitions, 4131 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:53,213 INFO L231 Difference]: Finished difference. Result has 307 places, 296 transitions, 3119 flow [2024-10-11 14:34:53,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3119, PETRI_PLACES=307, PETRI_TRANSITIONS=296} [2024-10-11 14:34:53,214 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 264 predicate places. [2024-10-11 14:34:53,214 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 296 transitions, 3119 flow [2024-10-11 14:34:53,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:53,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:53,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:53,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-10-11 14:34:53,215 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:53,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash 261907245, now seen corresponding path program 38 times [2024-10-11 14:34:53,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:53,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998406638] [2024-10-11 14:34:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:53,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:53,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998406638] [2024-10-11 14:34:53,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998406638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:53,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:53,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842276679] [2024-10-11 14:34:53,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:53,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:53,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:53,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:53,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:53,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:53,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 296 transitions, 3119 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:53,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:53,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:53,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:54,930 INFO L124 PetriNetUnfolderBase]: 4471/8021 cut-off events. [2024-10-11 14:34:54,930 INFO L125 PetriNetUnfolderBase]: For 255285/255549 co-relation queries the response was YES. [2024-10-11 14:34:55,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41092 conditions, 8021 events. 4471/8021 cut-off events. For 255285/255549 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 61950 event pairs, 2133 based on Foata normal form. 58/7835 useless extension candidates. Maximal degree in co-relation 40951. Up to 6613 conditions per place. [2024-10-11 14:34:55,037 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 309 selfloop transitions, 35 changer transitions 3/354 dead transitions. [2024-10-11 14:34:55,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 354 transitions, 4561 flow [2024-10-11 14:34:55,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:55,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-10-11 14:34:55,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-10-11 14:34:55,038 INFO L175 Difference]: Start difference. First operand has 307 places, 296 transitions, 3119 flow. Second operand 11 states and 224 transitions. [2024-10-11 14:34:55,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 354 transitions, 4561 flow [2024-10-11 14:34:55,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 354 transitions, 4435 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:55,448 INFO L231 Difference]: Finished difference. Result has 312 places, 301 transitions, 3315 flow [2024-10-11 14:34:55,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2993, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3315, PETRI_PLACES=312, PETRI_TRANSITIONS=301} [2024-10-11 14:34:55,449 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 269 predicate places. [2024-10-11 14:34:55,449 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 301 transitions, 3315 flow [2024-10-11 14:34:55,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:55,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:55,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:55,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-10-11 14:34:55,449 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:55,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2051050689, now seen corresponding path program 39 times [2024-10-11 14:34:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403764755] [2024-10-11 14:34:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:55,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403764755] [2024-10-11 14:34:55,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403764755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:55,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:55,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:55,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906792168] [2024-10-11 14:34:55,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:55,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:55,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:55,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:55,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:55,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 301 transitions, 3315 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:55,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:55,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:55,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:57,164 INFO L124 PetriNetUnfolderBase]: 4471/8029 cut-off events. [2024-10-11 14:34:57,165 INFO L125 PetriNetUnfolderBase]: For 268174/268438 co-relation queries the response was YES. [2024-10-11 14:34:57,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41448 conditions, 8029 events. 4471/8029 cut-off events. For 268174/268438 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 62123 event pairs, 2128 based on Foata normal form. 64/7848 useless extension candidates. Maximal degree in co-relation 41304. Up to 6651 conditions per place. [2024-10-11 14:34:57,258 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 307 selfloop transitions, 36 changer transitions 4/354 dead transitions. [2024-10-11 14:34:57,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 354 transitions, 4530 flow [2024-10-11 14:34:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-10-11 14:34:57,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2024-10-11 14:34:57,259 INFO L175 Difference]: Start difference. First operand has 312 places, 301 transitions, 3315 flow. Second operand 11 states and 221 transitions. [2024-10-11 14:34:57,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 354 transitions, 4530 flow [2024-10-11 14:34:57,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 354 transitions, 4270 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:57,734 INFO L231 Difference]: Finished difference. Result has 318 places, 305 transitions, 3222 flow [2024-10-11 14:34:57,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3222, PETRI_PLACES=318, PETRI_TRANSITIONS=305} [2024-10-11 14:34:57,735 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-10-11 14:34:57,735 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 305 transitions, 3222 flow [2024-10-11 14:34:57,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:57,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:57,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:57,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-10-11 14:34:57,736 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:57,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1323791381, now seen corresponding path program 40 times [2024-10-11 14:34:57,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:57,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754490119] [2024-10-11 14:34:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:57,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:34:58,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:58,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754490119] [2024-10-11 14:34:58,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754490119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:58,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:58,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:34:58,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159746872] [2024-10-11 14:34:58,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:58,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:34:58,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:58,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:34:58,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:34:58,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:34:58,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 305 transitions, 3222 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:58,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:58,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:34:58,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:59,302 INFO L124 PetriNetUnfolderBase]: 4471/8027 cut-off events. [2024-10-11 14:34:59,303 INFO L125 PetriNetUnfolderBase]: For 254986/255274 co-relation queries the response was YES. [2024-10-11 14:34:59,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40611 conditions, 8027 events. 4471/8027 cut-off events. For 254986/255274 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 62123 event pairs, 2124 based on Foata normal form. 80/7864 useless extension candidates. Maximal degree in co-relation 40464. Up to 6647 conditions per place. [2024-10-11 14:34:59,719 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 305 selfloop transitions, 40 changer transitions 4/356 dead transitions. [2024-10-11 14:34:59,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 356 transitions, 4367 flow [2024-10-11 14:34:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:34:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:34:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-10-11 14:34:59,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-10-11 14:34:59,720 INFO L175 Difference]: Start difference. First operand has 318 places, 305 transitions, 3222 flow. Second operand 11 states and 220 transitions. [2024-10-11 14:34:59,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 356 transitions, 4367 flow [2024-10-11 14:35:00,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 356 transitions, 4201 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-10-11 14:35:00,229 INFO L231 Difference]: Finished difference. Result has 322 places, 309 transitions, 3242 flow [2024-10-11 14:35:00,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3242, PETRI_PLACES=322, PETRI_TRANSITIONS=309} [2024-10-11 14:35:00,229 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-10-11 14:35:00,229 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 309 transitions, 3242 flow [2024-10-11 14:35:00,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:00,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:00,230 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:00,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-10-11 14:35:00,230 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:35:00,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2012940739, now seen corresponding path program 41 times [2024-10-11 14:35:00,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:00,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056221315] [2024-10-11 14:35:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:00,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:00,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056221315] [2024-10-11 14:35:00,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056221315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:00,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:35:00,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:35:00,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69734262] [2024-10-11 14:35:00,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:00,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:35:00,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:35:00,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:35:00,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:35:00,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 309 transitions, 3242 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:00,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:00,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:35:00,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:02,485 INFO L124 PetriNetUnfolderBase]: 4507/8093 cut-off events. [2024-10-11 14:35:02,485 INFO L125 PetriNetUnfolderBase]: For 250577/250865 co-relation queries the response was YES. [2024-10-11 14:35:02,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40527 conditions, 8093 events. 4507/8093 cut-off events. For 250577/250865 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 62765 event pairs, 2186 based on Foata normal form. 80/7918 useless extension candidates. Maximal degree in co-relation 40378. Up to 6781 conditions per place. [2024-10-11 14:35:02,616 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 309 selfloop transitions, 36 changer transitions 3/355 dead transitions. [2024-10-11 14:35:02,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 355 transitions, 4362 flow [2024-10-11 14:35:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:35:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:35:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-10-11 14:35:02,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2024-10-11 14:35:02,617 INFO L175 Difference]: Start difference. First operand has 322 places, 309 transitions, 3242 flow. Second operand 11 states and 214 transitions. [2024-10-11 14:35:02,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 355 transitions, 4362 flow [2024-10-11 14:35:03,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 355 transitions, 4178 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-10-11 14:35:03,456 INFO L231 Difference]: Finished difference. Result has 326 places, 312 transitions, 3224 flow [2024-10-11 14:35:03,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3224, PETRI_PLACES=326, PETRI_TRANSITIONS=312} [2024-10-11 14:35:03,457 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 283 predicate places. [2024-10-11 14:35:03,457 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 312 transitions, 3224 flow [2024-10-11 14:35:03,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:03,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:03,457 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:03,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-10-11 14:35:03,458 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:35:03,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash 103041487, now seen corresponding path program 42 times [2024-10-11 14:35:03,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:03,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599333239] [2024-10-11 14:35:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:03,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599333239] [2024-10-11 14:35:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599333239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:04,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:35:04,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:35:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710079732] [2024-10-11 14:35:04,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:04,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:35:04,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:04,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:35:04,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:35:04,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-11 14:35:04,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 312 transitions, 3224 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:04,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:04,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-11 14:35:04,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:06,151 INFO L124 PetriNetUnfolderBase]: 4507/8153 cut-off events. [2024-10-11 14:35:06,152 INFO L125 PetriNetUnfolderBase]: For 245181/245469 co-relation queries the response was YES. [2024-10-11 14:35:06,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40172 conditions, 8153 events. 4507/8153 cut-off events. For 245181/245469 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 64010 event pairs, 2129 based on Foata normal form. 72/7952 useless extension candidates. Maximal degree in co-relation 40021. Up to 6794 conditions per place. [2024-10-11 14:35:06,241 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 311 selfloop transitions, 34 changer transitions 3/355 dead transitions. [2024-10-11 14:35:06,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 355 transitions, 4274 flow [2024-10-11 14:35:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:35:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:35:06,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-10-11 14:35:06,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4359504132231405 [2024-10-11 14:35:06,242 INFO L175 Difference]: Start difference. First operand has 326 places, 312 transitions, 3224 flow. Second operand 11 states and 211 transitions. [2024-10-11 14:35:06,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 355 transitions, 4274 flow [2024-10-11 14:35:06,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 355 transitions, 4104 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-10-11 14:35:06,783 INFO L231 Difference]: Finished difference. Result has 330 places, 314 transitions, 3148 flow [2024-10-11 14:35:06,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3148, PETRI_PLACES=330, PETRI_TRANSITIONS=314} [2024-10-11 14:35:06,783 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-10-11 14:35:06,783 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 314 transitions, 3148 flow [2024-10-11 14:35:06,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:06,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:06,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:06,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-10-11 14:35:06,784 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:35:06,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash 26885755, now seen corresponding path program 1 times [2024-10-11 14:35:06,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023407623] [2024-10-11 14:35:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:06,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023407623] [2024-10-11 14:35:06,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023407623] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:06,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494538273] [2024-10-11 14:35:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:06,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:06,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:06,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:06,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:35:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:06,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:35:07,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:07,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:07,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494538273] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:07,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:07,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-11 14:35:07,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824352269] [2024-10-11 14:35:07,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:07,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:35:07,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:07,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:35:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:35:07,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-11 14:35:07,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 314 transitions, 3148 flow. Second operand has 12 states, 12 states have (on average 16.0) internal successors, (192), 12 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:07,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:07,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-11 14:35:07,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:10,611 INFO L124 PetriNetUnfolderBase]: 7585/14483 cut-off events. [2024-10-11 14:35:10,611 INFO L125 PetriNetUnfolderBase]: For 498601/499429 co-relation queries the response was YES. [2024-10-11 14:35:10,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73126 conditions, 14483 events. 7585/14483 cut-off events. For 498601/499429 co-relation queries the response was YES. Maximal size of possible extension queue 1240. Compared 131998 event pairs, 4538 based on Foata normal form. 399/14280 useless extension candidates. Maximal degree in co-relation 72973. Up to 6153 conditions per place. [2024-10-11 14:35:10,792 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 522 selfloop transitions, 6 changer transitions 12/586 dead transitions. [2024-10-11 14:35:10,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 586 transitions, 7051 flow [2024-10-11 14:35:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:35:10,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:35:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-10-11 14:35:10,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-10-11 14:35:10,794 INFO L175 Difference]: Start difference. First operand has 330 places, 314 transitions, 3148 flow. Second operand 7 states and 147 transitions. [2024-10-11 14:35:10,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 586 transitions, 7051 flow [2024-10-11 14:35:11,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 586 transitions, 6919 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-11 14:35:11,387 INFO L231 Difference]: Finished difference. Result has 332 places, 318 transitions, 3137 flow [2024-10-11 14:35:11,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3137, PETRI_PLACES=332, PETRI_TRANSITIONS=318} [2024-10-11 14:35:11,388 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 289 predicate places. [2024-10-11 14:35:11,388 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 318 transitions, 3137 flow [2024-10-11 14:35:11,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.0) internal successors, (192), 12 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:11,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:11,388 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:11,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:35:11,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-10-11 14:35:11,591 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:35:11,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:11,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2050968607, now seen corresponding path program 2 times [2024-10-11 14:35:11,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:11,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836134719] [2024-10-11 14:35:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:11,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:12,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:12,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836134719] [2024-10-11 14:35:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836134719] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:12,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830962831] [2024-10-11 14:35:12,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:35:12,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:12,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:12,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:12,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:35:12,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:35:12,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:35:12,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:35:12,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:12,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:12,543 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 14:35:12,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-10-11 14:35:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 14:35:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830962831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:12,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:12,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 4] total 14 [2024-10-11 14:35:12,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361330563] [2024-10-11 14:35:12,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:12,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:35:12,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:35:12,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:35:12,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-11 14:35:12,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 318 transitions, 3137 flow. Second operand has 15 states, 15 states have (on average 13.266666666666667) internal successors, (199), 15 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:12,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:12,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-11 14:35:12,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:17,072 INFO L124 PetriNetUnfolderBase]: 11294/20335 cut-off events. [2024-10-11 14:35:17,072 INFO L125 PetriNetUnfolderBase]: For 742178/743052 co-relation queries the response was YES. [2024-10-11 14:35:17,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103555 conditions, 20335 events. 11294/20335 cut-off events. For 742178/743052 co-relation queries the response was YES. Maximal size of possible extension queue 1488. Compared 178614 event pairs, 4074 based on Foata normal form. 343/19647 useless extension candidates. Maximal degree in co-relation 103398. Up to 13092 conditions per place. [2024-10-11 14:35:17,492 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 442 selfloop transitions, 25 changer transitions 0/511 dead transitions. [2024-10-11 14:35:17,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 511 transitions, 6116 flow [2024-10-11 14:35:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:35:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:35:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 297 transitions. [2024-10-11 14:35:17,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-10-11 14:35:17,494 INFO L175 Difference]: Start difference. First operand has 332 places, 318 transitions, 3137 flow. Second operand 17 states and 297 transitions. [2024-10-11 14:35:17,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 511 transitions, 6116 flow [2024-10-11 14:35:18,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 511 transitions, 6081 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-10-11 14:35:18,753 INFO L231 Difference]: Finished difference. Result has 351 places, 333 transitions, 3284 flow [2024-10-11 14:35:18,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3122, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3284, PETRI_PLACES=351, PETRI_TRANSITIONS=333} [2024-10-11 14:35:18,754 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-10-11 14:35:18,754 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 333 transitions, 3284 flow [2024-10-11 14:35:18,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.266666666666667) internal successors, (199), 15 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:18,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:18,754 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:18,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 14:35:18,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-10-11 14:35:18,955 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:35:18,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:18,955 INFO L85 PathProgramCache]: Analyzing trace with hash -657789725, now seen corresponding path program 1 times [2024-10-11 14:35:18,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:18,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024950084] [2024-10-11 14:35:18,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:18,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:19,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:19,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024950084] [2024-10-11 14:35:19,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024950084] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:19,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456483595] [2024-10-11 14:35:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:19,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:19,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:19,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:19,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:35:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:19,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:35:19,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:19,184 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:35:19,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456483595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:19,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:35:19,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-11 14:35:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082081891] [2024-10-11 14:35:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:19,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:35:19,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:19,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:35:19,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:35:19,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-11 14:35:19,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 333 transitions, 3284 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:19,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:19,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-11 14:35:19,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand