./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-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:38:50,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:38:50,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:38:50,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:38:50,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:38:50,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:38:50,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:38:50,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:38:50,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:38:50,676 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:38:50,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:38:50,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:38:50,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:38:50,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:38:50,681 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:38:50,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:38:50,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:38:50,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:38:50,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:38:50,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:38:50,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:38:50,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:38:50,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:38:50,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:38:50,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:38:50,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:38:50,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:38:50,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:38:50,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:38:50,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:38:50,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:38:50,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:38:50,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:38:50,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:38:50,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:38:50,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:38:50,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:38:50,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:38:50,688 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:38:50,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:38:50,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:38:50,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:38:50,689 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 [2024-10-14 14:38:50,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:38:50,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:38:50,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:38:50,984 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:38:50,984 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:38:50,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-10-14 14:38:52,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:38:52,605 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:38:52,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-10-14 14:38:52,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e60b3d6d/ca5d0fc415af457e94020e3fb53a3997/FLAG1c12ce5dd [2024-10-14 14:38:52,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e60b3d6d/ca5d0fc415af457e94020e3fb53a3997 [2024-10-14 14:38:52,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:38:52,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:38:52,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:38:52,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:38:52,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:38:52,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:52,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da66d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52, skipping insertion in model container [2024-10-14 14:38:52,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:52,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:38:52,861 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-counter-determinism.wvr.c[2528,2541] [2024-10-14 14:38:52,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:38:52,879 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:38:52,899 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-counter-determinism.wvr.c[2528,2541] [2024-10-14 14:38:52,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:38:52,916 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:38:52,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52 WrapperNode [2024-10-14 14:38:52,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:38:52,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:38:52,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:38:52,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:38:52,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:52,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:52,957 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 96 [2024-10-14 14:38:52,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:38:52,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:38:52,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:38:52,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:38:52,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:52,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:52,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:53,003 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 14:38:53,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:53,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:53,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:53,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:53,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:53,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:53,023 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:38:53,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:38:53,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:38:53,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:38:53,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2024-10-14 14:38:53,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:38:53,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:38:53,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 14:38:53,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 14:38:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:38:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:38:53,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:38:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:38:53,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:38:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:38:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:38:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 14:38:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 14:38:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:38:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:38:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:38:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:38:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:38:53,127 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:38:53,264 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:38:53,266 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:38:53,514 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:38:53,514 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:38:53,651 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:38:53,651 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 14:38:53,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:38:53 BoogieIcfgContainer [2024-10-14 14:38:53,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:38:53,657 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:38:53,657 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:38:53,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:38:53,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:38:52" (1/3) ... [2024-10-14 14:38:53,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dba506a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:38:53, skipping insertion in model container [2024-10-14 14:38:53,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (2/3) ... [2024-10-14 14:38:53,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dba506a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:38:53, skipping insertion in model container [2024-10-14 14:38:53,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:38:53" (3/3) ... [2024-10-14 14:38:53,664 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-10-14 14:38:53,680 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:38:53,681 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:38:53,681 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:38:53,745 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-14 14:38:53,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-10-14 14:38:53,813 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-10-14 14:38:53,814 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 14:38:53,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-14 14:38:53,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-10-14 14:38:53,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-10-14 14:38:53,835 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:38:53,842 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;@7d11ebce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:38:53,843 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-14 14:38:53,856 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:38:53,859 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-14 14:38:53,860 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 14:38:53,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:53,861 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] [2024-10-14 14:38:53,862 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 2 more)] === [2024-10-14 14:38:53,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:53,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1288392351, now seen corresponding path program 1 times [2024-10-14 14:38:53,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:53,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977000632] [2024-10-14 14:38:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:53,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:54,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:54,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977000632] [2024-10-14 14:38:54,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977000632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:38:54,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:38:54,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:38:54,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264017695] [2024-10-14 14:38:54,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:38:54,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:38:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:54,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:38:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:38:54,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 14:38:54,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:54,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:54,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 14:38:54,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:54,984 INFO L124 PetriNetUnfolderBase]: 3331/4536 cut-off events. [2024-10-14 14:38:54,984 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2024-10-14 14:38:54,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 4536 events. 3331/4536 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19489 event pairs, 587 based on Foata normal form. 1/4497 useless extension candidates. Maximal degree in co-relation 8229. Up to 3534 conditions per place. [2024-10-14 14:38:55,028 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 47 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-10-14 14:38:55,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 267 flow [2024-10-14 14:38:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:38:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:38:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-14 14:38:55,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-14 14:38:55,044 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-10-14 14:38:55,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 267 flow [2024-10-14 14:38:55,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-14 14:38:55,062 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-10-14 14:38:55,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-10-14 14:38:55,070 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-10-14 14:38:55,070 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-10-14 14:38:55,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:55,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:55,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:55,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:38:55,072 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 2 more)] === [2024-10-14 14:38:55,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:55,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1256489819, now seen corresponding path program 1 times [2024-10-14 14:38:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647958526] [2024-10-14 14:38:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647958526] [2024-10-14 14:38:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647958526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:38:55,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:38:55,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:38:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154551424] [2024-10-14 14:38:55,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:38:55,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:38:55,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:38:55,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:38:55,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 14:38:55,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:38:55,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:55,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 14:38:55,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:56,171 INFO L124 PetriNetUnfolderBase]: 7596/10156 cut-off events. [2024-10-14 14:38:56,171 INFO L125 PetriNetUnfolderBase]: For 1726/1746 co-relation queries the response was YES. [2024-10-14 14:38:56,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23047 conditions, 10156 events. 7596/10156 cut-off events. For 1726/1746 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 50504 event pairs, 2230 based on Foata normal form. 0/9513 useless extension candidates. Maximal degree in co-relation 3481. Up to 5148 conditions per place. [2024-10-14 14:38:56,285 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 94 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-10-14 14:38:56,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 108 transitions, 516 flow [2024-10-14 14:38:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:38:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:38:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-14 14:38:56,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.655 [2024-10-14 14:38:56,289 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 131 transitions. [2024-10-14 14:38:56,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 108 transitions, 516 flow [2024-10-14 14:38:56,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 108 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 14:38:56,294 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2024-10-14 14:38:56,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-10-14 14:38:56,295 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-10-14 14:38:56,295 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2024-10-14 14:38:56,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:38:56,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:56,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:56,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:38:56,297 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 2 more)] === [2024-10-14 14:38:56,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:56,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2057066661, now seen corresponding path program 2 times [2024-10-14 14:38:56,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:56,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950624624] [2024-10-14 14:38:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:56,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:56,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:56,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950624624] [2024-10-14 14:38:56,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950624624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:38:56,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:38:56,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:38:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175070427] [2024-10-14 14:38:56,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:38:56,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:38:56,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:56,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:38:56,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:38:56,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 14:38:56,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-14 14:38:56,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:56,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 14:38:56,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:57,721 INFO L124 PetriNetUnfolderBase]: 10046/13567 cut-off events. [2024-10-14 14:38:57,721 INFO L125 PetriNetUnfolderBase]: For 5892/5892 co-relation queries the response was YES. [2024-10-14 14:38:57,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35601 conditions, 13567 events. 10046/13567 cut-off events. For 5892/5892 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 71922 event pairs, 1145 based on Foata normal form. 288/13797 useless extension candidates. Maximal degree in co-relation 17061. Up to 3538 conditions per place. [2024-10-14 14:38:57,809 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 143 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2024-10-14 14:38:57,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 160 transitions, 824 flow [2024-10-14 14:38:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:38:57,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:38:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-10-14 14:38:57,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-14 14:38:57,812 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 7 states and 192 transitions. [2024-10-14 14:38:57,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 160 transitions, 824 flow [2024-10-14 14:38:57,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 160 transitions, 824 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 14:38:57,826 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 260 flow [2024-10-14 14:38:57,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-10-14 14:38:57,827 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2024-10-14 14:38:57,827 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 260 flow [2024-10-14 14:38:57,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-14 14:38:57,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:57,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:57,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:38:57,828 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 2 more)] === [2024-10-14 14:38:57,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash -730867066, now seen corresponding path program 1 times [2024-10-14 14:38:57,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:57,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590823185] [2024-10-14 14:38:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:57,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:57,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:57,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590823185] [2024-10-14 14:38:57,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590823185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:38:57,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:38:57,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:38:57,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907122597] [2024-10-14 14:38:57,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:38:57,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:38:57,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:38:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:38:57,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 14:38:57,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:57,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:57,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 14:38:57,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:58,702 INFO L124 PetriNetUnfolderBase]: 6884/9422 cut-off events. [2024-10-14 14:38:58,702 INFO L125 PetriNetUnfolderBase]: For 12936/12970 co-relation queries the response was YES. [2024-10-14 14:38:58,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28422 conditions, 9422 events. 6884/9422 cut-off events. For 12936/12970 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 47380 event pairs, 2587 based on Foata normal form. 352/9648 useless extension candidates. Maximal degree in co-relation 19597. Up to 5747 conditions per place. [2024-10-14 14:38:58,780 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 68 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-10-14 14:38:58,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 479 flow [2024-10-14 14:38:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:38:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:38:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-14 14:38:58,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-10-14 14:38:58,782 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 260 flow. Second operand 3 states and 82 transitions. [2024-10-14 14:38:58,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 479 flow [2024-10-14 14:38:58,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 471 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-14 14:38:58,812 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 265 flow [2024-10-14 14:38:58,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-10-14 14:38:58,813 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2024-10-14 14:38:58,813 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 265 flow [2024-10-14 14:38:58,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:58,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:58,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:58,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:38:58,814 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 2 more)] === [2024-10-14 14:38:58,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash 134795953, now seen corresponding path program 3 times [2024-10-14 14:38:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:58,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75711667] [2024-10-14 14:38:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:58,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:58,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75711667] [2024-10-14 14:38:58,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75711667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:38:58,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:38:58,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:38:58,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750799011] [2024-10-14 14:38:58,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:38:58,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:38:58,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:38:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:38:58,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 14:38:58,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:38:58,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:58,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 14:38:58,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:00,146 INFO L124 PetriNetUnfolderBase]: 10486/14428 cut-off events. [2024-10-14 14:39:00,146 INFO L125 PetriNetUnfolderBase]: For 18882/18902 co-relation queries the response was YES. [2024-10-14 14:39:00,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43953 conditions, 14428 events. 10486/14428 cut-off events. For 18882/18902 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 77749 event pairs, 3394 based on Foata normal form. 62/14322 useless extension candidates. Maximal degree in co-relation 31554. Up to 7316 conditions per place. [2024-10-14 14:39:00,235 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 102 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2024-10-14 14:39:00,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 123 transitions, 779 flow [2024-10-14 14:39:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:39:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:39:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-10-14 14:39:00,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-14 14:39:00,239 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 265 flow. Second operand 5 states and 130 transitions. [2024-10-14 14:39:00,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 123 transitions, 779 flow [2024-10-14 14:39:00,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 123 transitions, 770 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 14:39:00,290 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 387 flow [2024-10-14 14:39:00,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-10-14 14:39:00,292 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2024-10-14 14:39:00,293 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 387 flow [2024-10-14 14:39:00,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:00,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:00,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:00,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:39:00,294 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 2 more)] === [2024-10-14 14:39:00,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1656382419, now seen corresponding path program 4 times [2024-10-14 14:39:00,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:00,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714173376] [2024-10-14 14:39:00,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:00,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:00,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:00,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714173376] [2024-10-14 14:39:00,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714173376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:00,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:00,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:39:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409340973] [2024-10-14 14:39:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:00,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:39:00,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:39:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:39:00,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 14:39:00,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:00,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:00,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 14:39:00,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:01,393 INFO L124 PetriNetUnfolderBase]: 10738/14702 cut-off events. [2024-10-14 14:39:01,393 INFO L125 PetriNetUnfolderBase]: For 29691/29691 co-relation queries the response was YES. [2024-10-14 14:39:01,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48348 conditions, 14702 events. 10738/14702 cut-off events. For 29691/29691 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 79262 event pairs, 2805 based on Foata normal form. 62/14666 useless extension candidates. Maximal degree in co-relation 32769. Up to 5854 conditions per place. [2024-10-14 14:39:01,608 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 112 selfloop transitions, 14 changer transitions 0/130 dead transitions. [2024-10-14 14:39:01,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 130 transitions, 876 flow [2024-10-14 14:39:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:39:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:39:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-14 14:39:01,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.655 [2024-10-14 14:39:01,612 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 387 flow. Second operand 5 states and 131 transitions. [2024-10-14 14:39:01,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 130 transitions, 876 flow [2024-10-14 14:39:01,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 130 transitions, 860 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-10-14 14:39:01,773 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 430 flow [2024-10-14 14:39:01,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-10-14 14:39:01,774 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-10-14 14:39:01,774 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 430 flow [2024-10-14 14:39:01,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:01,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:01,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:01,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:39:01,774 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 2 more)] === [2024-10-14 14:39:01,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash 214444721, now seen corresponding path program 1 times [2024-10-14 14:39:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954265829] [2024-10-14 14:39:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:01,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:01,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954265829] [2024-10-14 14:39:01,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954265829] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:01,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:01,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:39:01,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008743705] [2024-10-14 14:39:01,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:01,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:39:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:01,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:39:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:39:01,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 14:39:01,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 430 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:01,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:01,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 14:39:01,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:03,016 INFO L124 PetriNetUnfolderBase]: 11529/15991 cut-off events. [2024-10-14 14:39:03,017 INFO L125 PetriNetUnfolderBase]: For 42031/42055 co-relation queries the response was YES. [2024-10-14 14:39:03,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53989 conditions, 15991 events. 11529/15991 cut-off events. For 42031/42055 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 90367 event pairs, 3652 based on Foata normal form. 3/15076 useless extension candidates. Maximal degree in co-relation 38705. Up to 8332 conditions per place. [2024-10-14 14:39:03,130 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 102 selfloop transitions, 17 changer transitions 0/124 dead transitions. [2024-10-14 14:39:03,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 124 transitions, 867 flow [2024-10-14 14:39:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:39:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:39:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-10-14 14:39:03,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-14 14:39:03,132 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 430 flow. Second operand 5 states and 130 transitions. [2024-10-14 14:39:03,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 124 transitions, 867 flow [2024-10-14 14:39:03,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 124 transitions, 836 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 14:39:03,278 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 459 flow [2024-10-14 14:39:03,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-10-14 14:39:03,279 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-10-14 14:39:03,279 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 459 flow [2024-10-14 14:39:03,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:03,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:03,279 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:03,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 14:39:03,280 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 2 more)] === [2024-10-14 14:39:03,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash -438324993, now seen corresponding path program 5 times [2024-10-14 14:39:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:03,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189653435] [2024-10-14 14:39:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:03,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:03,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189653435] [2024-10-14 14:39:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189653435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:03,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:03,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:39:03,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828562395] [2024-10-14 14:39:03,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:03,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:39:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:39:03,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:39:03,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 14:39:03,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-14 14:39:03,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:03,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 14:39:03,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:05,165 INFO L124 PetriNetUnfolderBase]: 17542/23407 cut-off events. [2024-10-14 14:39:05,165 INFO L125 PetriNetUnfolderBase]: For 49754/50951 co-relation queries the response was YES. [2024-10-14 14:39:05,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76943 conditions, 23407 events. 17542/23407 cut-off events. For 49754/50951 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 126166 event pairs, 6023 based on Foata normal form. 350/23582 useless extension candidates. Maximal degree in co-relation 63162. Up to 13144 conditions per place. [2024-10-14 14:39:05,319 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 122 selfloop transitions, 24 changer transitions 0/149 dead transitions. [2024-10-14 14:39:05,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 149 transitions, 1047 flow [2024-10-14 14:39:05,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:39:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:39:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-10-14 14:39:05,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 14:39:05,321 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 459 flow. Second operand 6 states and 160 transitions. [2024-10-14 14:39:05,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 149 transitions, 1047 flow [2024-10-14 14:39:05,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 149 transitions, 1019 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 14:39:05,459 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 534 flow [2024-10-14 14:39:05,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=534, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-10-14 14:39:05,459 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 34 predicate places. [2024-10-14 14:39:05,460 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 534 flow [2024-10-14 14:39:05,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-14 14:39:05,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:05,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:05,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 14:39:05,460 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 2 more)] === [2024-10-14 14:39:05,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:05,461 INFO L85 PathProgramCache]: Analyzing trace with hash -280034643, now seen corresponding path program 2 times [2024-10-14 14:39:05,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:05,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837217704] [2024-10-14 14:39:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:05,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:05,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:05,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837217704] [2024-10-14 14:39:05,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837217704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:05,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:05,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:39:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152474107] [2024-10-14 14:39:05,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:05,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:39:05,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:05,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:39:05,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:39:05,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 14:39:05,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 534 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-10-14 14:39:05,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:05,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 14:39:05,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:08,565 INFO L124 PetriNetUnfolderBase]: 31616/41945 cut-off events. [2024-10-14 14:39:08,565 INFO L125 PetriNetUnfolderBase]: For 125911/125913 co-relation queries the response was YES. [2024-10-14 14:39:08,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149307 conditions, 41945 events. 31616/41945 cut-off events. For 125911/125913 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 235422 event pairs, 12003 based on Foata normal form. 144/39526 useless extension candidates. Maximal degree in co-relation 106189. Up to 24041 conditions per place. [2024-10-14 14:39:08,880 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 151 selfloop transitions, 26 changer transitions 0/181 dead transitions. [2024-10-14 14:39:08,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 181 transitions, 1798 flow [2024-10-14 14:39:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:39:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:39:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-14 14:39:08,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-10-14 14:39:08,882 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 534 flow. Second operand 5 states and 123 transitions. [2024-10-14 14:39:08,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 181 transitions, 1798 flow [2024-10-14 14:39:09,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 181 transitions, 1654 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-14 14:39:09,193 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 843 flow [2024-10-14 14:39:09,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=843, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2024-10-14 14:39:09,194 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2024-10-14 14:39:09,194 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 843 flow [2024-10-14 14:39:09,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-10-14 14:39:09,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:09,194 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:09,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 14:39:09,195 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 2 more)] === [2024-10-14 14:39:09,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1126390978, now seen corresponding path program 1 times [2024-10-14 14:39:09,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:09,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247063750] [2024-10-14 14:39:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:09,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:09,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:09,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247063750] [2024-10-14 14:39:09,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247063750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:09,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:09,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:39:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448340884] [2024-10-14 14:39:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:09,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:39:09,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:09,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:39:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:39:09,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 14:39:09,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 843 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:39:09,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:09,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 14:39:09,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:11,218 INFO L124 PetriNetUnfolderBase]: 19425/26998 cut-off events. [2024-10-14 14:39:11,218 INFO L125 PetriNetUnfolderBase]: For 96517/97826 co-relation queries the response was YES. [2024-10-14 14:39:11,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102988 conditions, 26998 events. 19425/26998 cut-off events. For 96517/97826 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 159540 event pairs, 5895 based on Foata normal form. 511/27103 useless extension candidates. Maximal degree in co-relation 69892. Up to 15819 conditions per place. [2024-10-14 14:39:11,434 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 138 selfloop transitions, 3 changer transitions 2/154 dead transitions. [2024-10-14 14:39:11,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 1770 flow [2024-10-14 14:39:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:39:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:39:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-14 14:39:11,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-14 14:39:11,436 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 843 flow. Second operand 3 states and 78 transitions. [2024-10-14 14:39:11,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 1770 flow [2024-10-14 14:39:11,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 154 transitions, 1766 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-14 14:39:11,629 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 834 flow [2024-10-14 14:39:11,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=834, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2024-10-14 14:39:11,630 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 41 predicate places. [2024-10-14 14:39:11,630 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 834 flow [2024-10-14 14:39:11,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:39:11,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:11,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:11,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 14:39:11,631 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 2 more)] === [2024-10-14 14:39:11,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash -8869403, now seen corresponding path program 3 times [2024-10-14 14:39:11,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:11,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110246855] [2024-10-14 14:39:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:11,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:11,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:11,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110246855] [2024-10-14 14:39:11,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110246855] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:11,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:11,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:39:11,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393822786] [2024-10-14 14:39:11,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:11,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:39:11,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:39:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:39:11,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 14:39:11,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:11,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:11,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 14:39:11,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:13,981 INFO L124 PetriNetUnfolderBase]: 22313/30463 cut-off events. [2024-10-14 14:39:13,981 INFO L125 PetriNetUnfolderBase]: For 103489/103740 co-relation queries the response was YES. [2024-10-14 14:39:14,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121765 conditions, 30463 events. 22313/30463 cut-off events. For 103489/103740 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 177251 event pairs, 9606 based on Foata normal form. 55/30352 useless extension candidates. Maximal degree in co-relation 84542. Up to 20625 conditions per place. [2024-10-14 14:39:14,520 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 107 selfloop transitions, 46 changer transitions 1/163 dead transitions. [2024-10-14 14:39:14,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 163 transitions, 1618 flow [2024-10-14 14:39:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:39:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:39:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-10-14 14:39:14,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-10-14 14:39:14,522 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 834 flow. Second operand 5 states and 127 transitions. [2024-10-14 14:39:14,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 163 transitions, 1618 flow [2024-10-14 14:39:15,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 163 transitions, 1594 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-14 14:39:15,055 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 1176 flow [2024-10-14 14:39:15,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1176, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2024-10-14 14:39:15,056 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2024-10-14 14:39:15,056 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 1176 flow [2024-10-14 14:39:15,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:15,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:15,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:15,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 14:39:15,057 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 2 more)] === [2024-10-14 14:39:15,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:15,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1588924297, now seen corresponding path program 4 times [2024-10-14 14:39:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:15,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494275213] [2024-10-14 14:39:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:15,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:15,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494275213] [2024-10-14 14:39:15,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494275213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:15,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:15,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:39:15,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833328273] [2024-10-14 14:39:15,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:15,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:39:15,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:39:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:39:15,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 14:39:15,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 1176 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:15,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:15,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 14:39:15,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:17,750 INFO L124 PetriNetUnfolderBase]: 24984/34114 cut-off events. [2024-10-14 14:39:17,751 INFO L125 PetriNetUnfolderBase]: For 143555/144096 co-relation queries the response was YES. [2024-10-14 14:39:17,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140482 conditions, 34114 events. 24984/34114 cut-off events. For 143555/144096 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 204299 event pairs, 9040 based on Foata normal form. 452/34235 useless extension candidates. Maximal degree in co-relation 100992. Up to 20405 conditions per place. [2024-10-14 14:39:18,020 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 222 selfloop transitions, 19 changer transitions 6/256 dead transitions. [2024-10-14 14:39:18,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 256 transitions, 3312 flow [2024-10-14 14:39:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:39:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:39:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-14 14:39:18,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-10-14 14:39:18,022 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 1176 flow. Second operand 5 states and 123 transitions. [2024-10-14 14:39:18,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 256 transitions, 3312 flow [2024-10-14 14:39:18,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 256 transitions, 3238 flow, removed 37 selfloop flow, removed 0 redundant places. [2024-10-14 14:39:18,798 INFO L231 Difference]: Finished difference. Result has 96 places, 116 transitions, 1263 flow [2024-10-14 14:39:18,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1263, PETRI_PLACES=96, PETRI_TRANSITIONS=116} [2024-10-14 14:39:18,799 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 52 predicate places. [2024-10-14 14:39:18,799 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 116 transitions, 1263 flow [2024-10-14 14:39:18,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:18,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:18,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:18,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 14:39:18,800 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 2 more)] === [2024-10-14 14:39:18,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:18,800 INFO L85 PathProgramCache]: Analyzing trace with hash -695077353, now seen corresponding path program 5 times [2024-10-14 14:39:18,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:18,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588170036] [2024-10-14 14:39:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:18,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588170036] [2024-10-14 14:39:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588170036] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:18,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:18,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:39:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673376592] [2024-10-14 14:39:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:18,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:39:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:39:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:39:18,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 14:39:18,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 116 transitions, 1263 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-14 14:39:18,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:18,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 14:39:18,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:22,361 INFO L124 PetriNetUnfolderBase]: 28318/38584 cut-off events. [2024-10-14 14:39:22,361 INFO L125 PetriNetUnfolderBase]: For 187812/188506 co-relation queries the response was YES. [2024-10-14 14:39:22,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174628 conditions, 38584 events. 28318/38584 cut-off events. For 187812/188506 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 233193 event pairs, 3619 based on Foata normal form. 384/38621 useless extension candidates. Maximal degree in co-relation 128892. Up to 15408 conditions per place. [2024-10-14 14:39:22,662 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 238 selfloop transitions, 35 changer transitions 16/298 dead transitions. [2024-10-14 14:39:22,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 298 transitions, 3583 flow [2024-10-14 14:39:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:39:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:39:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-10-14 14:39:22,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-14 14:39:22,664 INFO L175 Difference]: Start difference. First operand has 96 places, 116 transitions, 1263 flow. Second operand 7 states and 175 transitions. [2024-10-14 14:39:22,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 298 transitions, 3583 flow [2024-10-14 14:39:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 298 transitions, 3566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 14:39:23,434 INFO L231 Difference]: Finished difference. Result has 105 places, 134 transitions, 1722 flow [2024-10-14 14:39:23,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1722, PETRI_PLACES=105, PETRI_TRANSITIONS=134} [2024-10-14 14:39:23,435 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 61 predicate places. [2024-10-14 14:39:23,435 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 134 transitions, 1722 flow [2024-10-14 14:39:23,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-14 14:39:23,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:23,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:23,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 14:39:23,436 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 2 more)] === [2024-10-14 14:39:23,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash 493413633, now seen corresponding path program 6 times [2024-10-14 14:39:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:23,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259732344] [2024-10-14 14:39:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:23,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:23,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259732344] [2024-10-14 14:39:23,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259732344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:23,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:23,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:39:23,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094772960] [2024-10-14 14:39:23,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:23,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:39:23,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:23,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:39:23,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:39:23,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 14:39:23,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 134 transitions, 1722 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:23,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:23,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 14:39:23,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:27,010 INFO L124 PetriNetUnfolderBase]: 28607/39999 cut-off events. [2024-10-14 14:39:27,010 INFO L125 PetriNetUnfolderBase]: For 242423/242957 co-relation queries the response was YES. [2024-10-14 14:39:27,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186340 conditions, 39999 events. 28607/39999 cut-off events. For 242423/242957 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 255596 event pairs, 7198 based on Foata normal form. 121/39902 useless extension candidates. Maximal degree in co-relation 144112. Up to 20035 conditions per place. [2024-10-14 14:39:27,361 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 205 selfloop transitions, 18 changer transitions 10/242 dead transitions. [2024-10-14 14:39:27,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 242 transitions, 3057 flow [2024-10-14 14:39:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:39:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:39:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-14 14:39:27,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-10-14 14:39:27,364 INFO L175 Difference]: Start difference. First operand has 105 places, 134 transitions, 1722 flow. Second operand 5 states and 129 transitions. [2024-10-14 14:39:27,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 242 transitions, 3057 flow [2024-10-14 14:39:29,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 242 transitions, 2993 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-10-14 14:39:29,274 INFO L231 Difference]: Finished difference. Result has 109 places, 136 transitions, 1758 flow [2024-10-14 14:39:29,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1758, PETRI_PLACES=109, PETRI_TRANSITIONS=136} [2024-10-14 14:39:29,274 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2024-10-14 14:39:29,274 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 136 transitions, 1758 flow [2024-10-14 14:39:29,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-14 14:39:29,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:29,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:29,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 14:39:29,275 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 2 more)] === [2024-10-14 14:39:29,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:29,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1859586157, now seen corresponding path program 7 times [2024-10-14 14:39:29,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625182110] [2024-10-14 14:39:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:29,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:29,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:29,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625182110] [2024-10-14 14:39:29,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625182110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:29,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:29,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:39:29,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210007282] [2024-10-14 14:39:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:29,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:39:29,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:39:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:39:29,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 14:39:29,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 136 transitions, 1758 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-14 14:39:29,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:29,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 14:39:29,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:33,435 INFO L124 PetriNetUnfolderBase]: 34955/47577 cut-off events. [2024-10-14 14:39:33,436 INFO L125 PetriNetUnfolderBase]: For 310810/310876 co-relation queries the response was YES. [2024-10-14 14:39:33,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223058 conditions, 47577 events. 34955/47577 cut-off events. For 310810/310876 co-relation queries the response was YES. Maximal size of possible extension queue 1775. Compared 286614 event pairs, 14401 based on Foata normal form. 497/47842 useless extension candidates. Maximal degree in co-relation 179499. Up to 29942 conditions per place. [2024-10-14 14:39:33,786 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 142 selfloop transitions, 64 changer transitions 11/221 dead transitions. [2024-10-14 14:39:33,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 221 transitions, 2770 flow [2024-10-14 14:39:33,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:39:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:39:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-10-14 14:39:33,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-10-14 14:39:33,788 INFO L175 Difference]: Start difference. First operand has 109 places, 136 transitions, 1758 flow. Second operand 6 states and 148 transitions. [2024-10-14 14:39:33,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 221 transitions, 2770 flow [2024-10-14 14:39:35,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 221 transitions, 2719 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 14:39:35,268 INFO L231 Difference]: Finished difference. Result has 114 places, 134 transitions, 1853 flow [2024-10-14 14:39:35,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1853, PETRI_PLACES=114, PETRI_TRANSITIONS=134} [2024-10-14 14:39:35,269 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2024-10-14 14:39:35,269 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 134 transitions, 1853 flow [2024-10-14 14:39:35,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-14 14:39:35,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:35,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:35,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 14:39:35,270 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 2 more)] === [2024-10-14 14:39:35,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash -966755713, now seen corresponding path program 6 times [2024-10-14 14:39:35,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:35,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545391510] [2024-10-14 14:39:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:35,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:35,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:35,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545391510] [2024-10-14 14:39:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545391510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:35,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:35,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:39:35,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207938657] [2024-10-14 14:39:35,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:35,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:39:35,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:39:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:39:35,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 14:39:35,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 134 transitions, 1853 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-14 14:39:35,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:35,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 14:39:35,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:39:39,584 INFO L124 PetriNetUnfolderBase]: 36331/48898 cut-off events. [2024-10-14 14:39:39,584 INFO L125 PetriNetUnfolderBase]: For 297995/299471 co-relation queries the response was YES. [2024-10-14 14:39:39,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223094 conditions, 48898 events. 36331/48898 cut-off events. For 297995/299471 co-relation queries the response was YES. Maximal size of possible extension queue 1753. Compared 290318 event pairs, 9272 based on Foata normal form. 818/49631 useless extension candidates. Maximal degree in co-relation 174951. Up to 19680 conditions per place. [2024-10-14 14:39:39,971 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 243 selfloop transitions, 36 changer transitions 2/287 dead transitions. [2024-10-14 14:39:39,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 287 transitions, 3787 flow [2024-10-14 14:39:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:39:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:39:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-10-14 14:39:39,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-14 14:39:39,972 INFO L175 Difference]: Start difference. First operand has 114 places, 134 transitions, 1853 flow. Second operand 6 states and 156 transitions. [2024-10-14 14:39:39,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 287 transitions, 3787 flow [2024-10-14 14:39:41,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 287 transitions, 3583 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-10-14 14:39:41,596 INFO L231 Difference]: Finished difference. Result has 116 places, 136 transitions, 1850 flow [2024-10-14 14:39:41,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1850, PETRI_PLACES=116, PETRI_TRANSITIONS=136} [2024-10-14 14:39:41,597 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-10-14 14:39:41,597 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 136 transitions, 1850 flow [2024-10-14 14:39:41,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-14 14:39:41,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:39:41,597 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:39:41,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 14:39:41,597 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 2 more)] === [2024-10-14 14:39:41,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:39:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash 965701137, now seen corresponding path program 8 times [2024-10-14 14:39:41,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:39:41,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273778323] [2024-10-14 14:39:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:39:41,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:39:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:39:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:39:41,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:39:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273778323] [2024-10-14 14:39:41,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273778323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:39:41,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:39:41,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:39:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840959196] [2024-10-14 14:39:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:39:41,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:39:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:39:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:39:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:39:41,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 14:39:41,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 136 transitions, 1850 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-10-14 14:39:41,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:39:41,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 14:39:41,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand