./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:08:59,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:08:59,819 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:08:59,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:08:59,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:08:59,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:08:59,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:08:59,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:08:59,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:08:59,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:08:59,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:08:59,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:08:59,876 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:08:59,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:08:59,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:08:59,879 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:08:59,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:08:59,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:08:59,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:08:59,882 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:08:59,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:08:59,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:08:59,884 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:08:59,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:08:59,885 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:08:59,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:08:59,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:08:59,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:08:59,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:59,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:08:59,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:08:59,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:08:59,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:08:59,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:08:59,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:08:59,891 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:08:59,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:08:59,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:08:59,892 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:08:59,892 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-06 22:09:00,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:09:00,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:09:00,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:09:00,292 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:09:00,297 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:09:00,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/queue.i [2023-11-06 22:09:04,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:09:04,572 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:09:04,573 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/sv-benchmarks/c/pthread/queue.i [2023-11-06 22:09:04,616 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/data/3cb4239c9/ea70dded284a4052ac2ea92f872c2528/FLAGfa72f5919 [2023-11-06 22:09:04,640 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/data/3cb4239c9/ea70dded284a4052ac2ea92f872c2528 [2023-11-06 22:09:04,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:09:04,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:09:04,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:04,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:09:04,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:09:04,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:04" (1/1) ... [2023-11-06 22:09:04,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee01b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:04, skipping insertion in model container [2023-11-06 22:09:04,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:04" (1/1) ... [2023-11-06 22:09:04,766 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:09:05,406 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/sv-benchmarks/c/pthread/queue.i[43284,43297] [2023-11-06 22:09:05,415 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/sv-benchmarks/c/pthread/queue.i[43491,43504] [2023-11-06 22:09:05,419 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/sv-benchmarks/c/pthread/queue.i[43772,43785] [2023-11-06 22:09:05,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:05,442 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:09:05,503 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/sv-benchmarks/c/pthread/queue.i[43284,43297] [2023-11-06 22:09:05,506 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/sv-benchmarks/c/pthread/queue.i[43491,43504] [2023-11-06 22:09:05,510 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/sv-benchmarks/c/pthread/queue.i[43772,43785] [2023-11-06 22:09:05,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:05,607 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:09:05,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05 WrapperNode [2023-11-06 22:09:05,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:05,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:05,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:09:05,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:09:05,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,710 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-11-06 22:09:05,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:05,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:09:05,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:09:05,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:09:05,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:09:05,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:09:05,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:09:05,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:09:05,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (1/1) ... [2023-11-06 22:09:05,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:05,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:09:05,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae839509-2ce2-4e14-9497-710a1d979cee/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:09:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:09:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:09:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:09:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:09:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:09:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:09:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:09:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:09:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:09:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:09:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:09:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:09:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:09:05,905 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:09:06,147 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:09:06,149 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:09:06,650 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:09:06,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:09:06,667 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:09:06,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:06 BoogieIcfgContainer [2023-11-06 22:09:06,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:09:06,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:09:06,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:09:06,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:09:06,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:09:04" (1/3) ... [2023-11-06 22:09:06,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117b1edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:06, skipping insertion in model container [2023-11-06 22:09:06,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:05" (2/3) ... [2023-11-06 22:09:06,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117b1edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:06, skipping insertion in model container [2023-11-06 22:09:06,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:06" (3/3) ... [2023-11-06 22:09:06,683 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-06 22:09:06,695 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:09:06,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:09:06,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-06 22:09:06,709 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:09:06,921 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:09:07,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 278 transitions, 570 flow [2023-11-06 22:09:07,247 INFO L124 PetriNetUnfolderBase]: 15/276 cut-off events. [2023-11-06 22:09:07,248 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:09:07,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 276 events. 15/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 202. Up to 2 conditions per place. [2023-11-06 22:09:07,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 278 transitions, 570 flow [2023-11-06 22:09:07,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 266 transitions, 541 flow [2023-11-06 22:09:07,276 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:09:07,305 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 266 transitions, 541 flow [2023-11-06 22:09:07,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 266 transitions, 541 flow [2023-11-06 22:09:07,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 266 transitions, 541 flow [2023-11-06 22:09:07,455 INFO L124 PetriNetUnfolderBase]: 15/266 cut-off events. [2023-11-06 22:09:07,456 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:09:07,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 266 events. 15/266 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 321 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 202. Up to 2 conditions per place. [2023-11-06 22:09:07,478 INFO L119 LiptonReduction]: Number of co-enabled transitions 17164 [2023-11-06 22:09:17,820 INFO L134 LiptonReduction]: Checked pairs total: 34415 [2023-11-06 22:09:17,821 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-11-06 22:09:17,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:09:17,844 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@9108774, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:09:17,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:09:17,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:09:17,848 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-06 22:09:17,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:09:17,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:17,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:09:17,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:17,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:17,855 INFO L85 PathProgramCache]: Analyzing trace with hash 33444, now seen corresponding path program 1 times [2023-11-06 22:09:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:17,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701135192] [2023-11-06 22:09:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:18,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:18,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701135192] [2023-11-06 22:09:18,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701135192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:18,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:18,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:09:18,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656223845] [2023-11-06 22:09:18,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:18,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:09:18,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:18,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:09:18,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:09:18,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 507 [2023-11-06 22:09:18,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 145 flow. Second operand has 2 states, 2 states have (on average 265.5) internal successors, (531), 2 states have internal predecessors, (531), 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) [2023-11-06 22:09:18,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:18,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 507 [2023-11-06 22:09:18,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:18,509 INFO L124 PetriNetUnfolderBase]: 1665/2832 cut-off events. [2023-11-06 22:09:18,509 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-06 22:09:18,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5499 conditions, 2832 events. 1665/2832 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13326 event pairs, 1323 based on Foata normal form. 90/2478 useless extension candidates. Maximal degree in co-relation 5328. Up to 2593 conditions per place. [2023-11-06 22:09:18,532 INFO L140 encePairwiseOnDemand]: 504/507 looper letters, 54 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-11-06 22:09:18,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 243 flow [2023-11-06 22:09:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:09:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:09:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 587 transitions. [2023-11-06 22:09:18,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788954635108481 [2023-11-06 22:09:18,561 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 587 transitions. [2023-11-06 22:09:18,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 587 transitions. [2023-11-06 22:09:18,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:18,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 587 transitions. [2023-11-06 22:09:18,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 293.5) internal successors, (587), 2 states have internal predecessors, (587), 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) [2023-11-06 22:09:18,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 507.0) internal successors, (1521), 3 states have internal predecessors, (1521), 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) [2023-11-06 22:09:18,585 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 507.0) internal successors, (1521), 3 states have internal predecessors, (1521), 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) [2023-11-06 22:09:18,588 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 145 flow. Second operand 2 states and 587 transitions. [2023-11-06 22:09:18,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 243 flow [2023-11-06 22:09:18,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:18,596 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-11-06 22:09:18,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-11-06 22:09:18,603 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2023-11-06 22:09:18,603 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-11-06 22:09:18,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 265.5) internal successors, (531), 2 states have internal predecessors, (531), 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) [2023-11-06 22:09:18,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:18,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:18,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:09:18,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:18,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash -140322023, now seen corresponding path program 1 times [2023-11-06 22:09:18,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:18,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592657410] [2023-11-06 22:09:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:18,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:18,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:18,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592657410] [2023-11-06 22:09:18,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592657410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:18,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:18,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:18,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591129548] [2023-11-06 22:09:18,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:18,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:18,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:18,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:18,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 507 [2023-11-06 22:09:18,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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) [2023-11-06 22:09:18,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:18,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 507 [2023-11-06 22:09:18,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:19,395 INFO L124 PetriNetUnfolderBase]: 1629/2796 cut-off events. [2023-11-06 22:09:19,396 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:09:19,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5408 conditions, 2796 events. 1629/2796 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13340 event pairs, 1272 based on Foata normal form. 0/2388 useless extension candidates. Maximal degree in co-relation 5405. Up to 2428 conditions per place. [2023-11-06 22:09:19,419 INFO L140 encePairwiseOnDemand]: 503/507 looper letters, 71 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-11-06 22:09:19,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 320 flow [2023-11-06 22:09:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 855 transitions. [2023-11-06 22:09:19,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5621301775147929 [2023-11-06 22:09:19,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 855 transitions. [2023-11-06 22:09:19,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 855 transitions. [2023-11-06 22:09:19,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:19,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 855 transitions. [2023-11-06 22:09:19,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 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) [2023-11-06 22:09:19,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 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) [2023-11-06 22:09:19,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 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) [2023-11-06 22:09:19,438 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 855 transitions. [2023-11-06 22:09:19,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 320 flow [2023-11-06 22:09:19,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:09:19,442 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-11-06 22:09:19,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-11-06 22:09:19,444 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-06 22:09:19,444 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-11-06 22:09:19,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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) [2023-11-06 22:09:19,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:19,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:19,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:09:19,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:19,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:19,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1704464279, now seen corresponding path program 1 times [2023-11-06 22:09:19,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:19,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952768161] [2023-11-06 22:09:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:19,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:20,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:20,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952768161] [2023-11-06 22:09:20,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952768161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:20,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:20,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:20,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256759315] [2023-11-06 22:09:20,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:20,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:20,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:20,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 507 [2023-11-06 22:09:20,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 242.4) internal successors, (1212), 5 states have internal predecessors, (1212), 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) [2023-11-06 22:09:20,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:20,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 507 [2023-11-06 22:09:20,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:21,161 INFO L124 PetriNetUnfolderBase]: 1741/2947 cut-off events. [2023-11-06 22:09:21,161 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-06 22:09:21,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5854 conditions, 2947 events. 1741/2947 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13756 event pairs, 1364 based on Foata normal form. 0/2527 useless extension candidates. Maximal degree in co-relation 5850. Up to 2731 conditions per place. [2023-11-06 22:09:21,185 INFO L140 encePairwiseOnDemand]: 500/507 looper letters, 58 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-11-06 22:09:21,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 294 flow [2023-11-06 22:09:21,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:09:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:09:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1508 transitions. [2023-11-06 22:09:21,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2023-11-06 22:09:21,193 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1508 transitions. [2023-11-06 22:09:21,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1508 transitions. [2023-11-06 22:09:21,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:21,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1508 transitions. [2023-11-06 22:09:21,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 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) [2023-11-06 22:09:21,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 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) [2023-11-06 22:09:21,215 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 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) [2023-11-06 22:09:21,215 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 6 states and 1508 transitions. [2023-11-06 22:09:21,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 294 flow [2023-11-06 22:09:21,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:21,224 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 186 flow [2023-11-06 22:09:21,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-11-06 22:09:21,226 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2023-11-06 22:09:21,227 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 186 flow [2023-11-06 22:09:21,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.4) internal successors, (1212), 5 states have internal predecessors, (1212), 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) [2023-11-06 22:09:21,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:21,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:21,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:09:21,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:21,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:21,231 INFO L85 PathProgramCache]: Analyzing trace with hash 907106335, now seen corresponding path program 1 times [2023-11-06 22:09:21,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:21,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429308849] [2023-11-06 22:09:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:21,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:21,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:21,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429308849] [2023-11-06 22:09:21,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429308849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:21,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:21,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:21,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713048866] [2023-11-06 22:09:21,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:21,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:09:21,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:21,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:09:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:09:22,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 507 [2023-11-06 22:09:22,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 236.16666666666666) internal successors, (1417), 6 states have internal predecessors, (1417), 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) [2023-11-06 22:09:22,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:22,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 507 [2023-11-06 22:09:22,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:23,154 INFO L124 PetriNetUnfolderBase]: 2151/3627 cut-off events. [2023-11-06 22:09:23,155 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2023-11-06 22:09:23,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7462 conditions, 3627 events. 2151/3627 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 17772 event pairs, 448 based on Foata normal form. 17/3226 useless extension candidates. Maximal degree in co-relation 7454. Up to 2819 conditions per place. [2023-11-06 22:09:23,190 INFO L140 encePairwiseOnDemand]: 497/507 looper letters, 95 selfloop transitions, 17 changer transitions 0/119 dead transitions. [2023-11-06 22:09:23,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 119 transitions, 530 flow [2023-11-06 22:09:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:23,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1278 transitions. [2023-11-06 22:09:23,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041420118343195 [2023-11-06 22:09:23,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1278 transitions. [2023-11-06 22:09:23,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1278 transitions. [2023-11-06 22:09:23,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:23,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1278 transitions. [2023-11-06 22:09:23,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.6) internal successors, (1278), 5 states have internal predecessors, (1278), 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) [2023-11-06 22:09:23,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 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) [2023-11-06 22:09:23,214 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 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) [2023-11-06 22:09:23,215 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 186 flow. Second operand 5 states and 1278 transitions. [2023-11-06 22:09:23,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 119 transitions, 530 flow [2023-11-06 22:09:23,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 119 transitions, 530 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:09:23,223 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 290 flow [2023-11-06 22:09:23,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-11-06 22:09:23,225 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2023-11-06 22:09:23,225 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 290 flow [2023-11-06 22:09:23,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.16666666666666) internal successors, (1417), 6 states have internal predecessors, (1417), 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) [2023-11-06 22:09:23,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:23,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:23,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:09:23,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:23,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1631786936, now seen corresponding path program 1 times [2023-11-06 22:09:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:23,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14945766] [2023-11-06 22:09:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:23,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:23,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14945766] [2023-11-06 22:09:23,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14945766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:23,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:23,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:09:23,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941591901] [2023-11-06 22:09:23,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:23,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:23,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 507 [2023-11-06 22:09:23,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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) [2023-11-06 22:09:23,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:23,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 507 [2023-11-06 22:09:23,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:23,823 INFO L124 PetriNetUnfolderBase]: 1450/2499 cut-off events. [2023-11-06 22:09:23,823 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2023-11-06 22:09:23,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5331 conditions, 2499 events. 1450/2499 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10278 event pairs, 701 based on Foata normal form. 76/2222 useless extension candidates. Maximal degree in co-relation 5319. Up to 1338 conditions per place. [2023-11-06 22:09:23,849 INFO L140 encePairwiseOnDemand]: 503/507 looper letters, 82 selfloop transitions, 3 changer transitions 5/100 dead transitions. [2023-11-06 22:09:23,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 502 flow [2023-11-06 22:09:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 859 transitions. [2023-11-06 22:09:23,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647600262984879 [2023-11-06 22:09:23,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 859 transitions. [2023-11-06 22:09:23,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 859 transitions. [2023-11-06 22:09:23,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:23,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 859 transitions. [2023-11-06 22:09:23,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 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) [2023-11-06 22:09:23,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 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) [2023-11-06 22:09:23,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 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) [2023-11-06 22:09:23,868 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 290 flow. Second operand 3 states and 859 transitions. [2023-11-06 22:09:23,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 502 flow [2023-11-06 22:09:23,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 496 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-06 22:09:23,876 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 276 flow [2023-11-06 22:09:23,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-11-06 22:09:23,878 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2023-11-06 22:09:23,878 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 276 flow [2023-11-06 22:09:23,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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) [2023-11-06 22:09:23,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:23,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:23,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:09:23,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:23,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash -792092821, now seen corresponding path program 2 times [2023-11-06 22:09:23,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:23,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218466410] [2023-11-06 22:09:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:23,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:24,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:24,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218466410] [2023-11-06 22:09:24,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218466410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:24,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:24,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:09:24,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853020302] [2023-11-06 22:09:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:24,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:09:24,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:24,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:09:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:09:26,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 507 [2023-11-06 22:09:26,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 276 flow. Second operand has 9 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 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) [2023-11-06 22:09:26,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:26,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 507 [2023-11-06 22:09:26,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:26,962 INFO L124 PetriNetUnfolderBase]: 1421/2483 cut-off events. [2023-11-06 22:09:26,962 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2023-11-06 22:09:26,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5303 conditions, 2483 events. 1421/2483 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10120 event pairs, 395 based on Foata normal form. 18/2185 useless extension candidates. Maximal degree in co-relation 5289. Up to 1904 conditions per place. [2023-11-06 22:09:26,990 INFO L140 encePairwiseOnDemand]: 502/507 looper letters, 73 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2023-11-06 22:09:26,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 91 transitions, 469 flow [2023-11-06 22:09:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1189 transitions. [2023-11-06 22:09:26,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690335305719921 [2023-11-06 22:09:26,998 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1189 transitions. [2023-11-06 22:09:26,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1189 transitions. [2023-11-06 22:09:27,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:27,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1189 transitions. [2023-11-06 22:09:27,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.8) internal successors, (1189), 5 states have internal predecessors, (1189), 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) [2023-11-06 22:09:27,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 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) [2023-11-06 22:09:27,015 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 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) [2023-11-06 22:09:27,015 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 276 flow. Second operand 5 states and 1189 transitions. [2023-11-06 22:09:27,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 91 transitions, 469 flow [2023-11-06 22:09:27,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 457 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:27,027 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 269 flow [2023-11-06 22:09:27,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-11-06 22:09:27,031 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2023-11-06 22:09:27,032 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 269 flow [2023-11-06 22:09:27,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 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) [2023-11-06 22:09:27,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:27,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:27,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:09:27,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:27,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1098156896, now seen corresponding path program 1 times [2023-11-06 22:09:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:27,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987952626] [2023-11-06 22:09:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:27,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:27,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987952626] [2023-11-06 22:09:27,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987952626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:27,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:27,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:09:27,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47437471] [2023-11-06 22:09:27,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:27,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:09:27,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:27,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:09:27,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:09:29,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 507 [2023-11-06 22:09:29,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 269 flow. Second operand has 9 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 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) [2023-11-06 22:09:29,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:29,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 507 [2023-11-06 22:09:29,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:29,782 INFO L124 PetriNetUnfolderBase]: 1420/2484 cut-off events. [2023-11-06 22:09:29,782 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2023-11-06 22:09:29,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5323 conditions, 2484 events. 1420/2484 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10180 event pairs, 1034 based on Foata normal form. 0/2159 useless extension candidates. Maximal degree in co-relation 5310. Up to 2290 conditions per place. [2023-11-06 22:09:29,809 INFO L140 encePairwiseOnDemand]: 497/507 looper letters, 67 selfloop transitions, 15 changer transitions 1/91 dead transitions. [2023-11-06 22:09:29,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 483 flow [2023-11-06 22:09:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1862 transitions. [2023-11-06 22:09:29,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45907297830374755 [2023-11-06 22:09:29,818 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1862 transitions. [2023-11-06 22:09:29,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1862 transitions. [2023-11-06 22:09:29,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:29,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1862 transitions. [2023-11-06 22:09:29,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 232.75) internal successors, (1862), 8 states have internal predecessors, (1862), 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) [2023-11-06 22:09:29,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 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) [2023-11-06 22:09:29,839 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 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) [2023-11-06 22:09:29,839 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 269 flow. Second operand 8 states and 1862 transitions. [2023-11-06 22:09:29,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 483 flow [2023-11-06 22:09:29,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:09:29,845 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 326 flow [2023-11-06 22:09:29,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=326, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2023-11-06 22:09:29,846 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2023-11-06 22:09:29,847 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 326 flow [2023-11-06 22:09:29,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 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) [2023-11-06 22:09:29,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:29,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:29,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:09:29,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:29,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1743846486, now seen corresponding path program 1 times [2023-11-06 22:09:29,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:29,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080733195] [2023-11-06 22:09:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:29,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:30,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:30,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080733195] [2023-11-06 22:09:30,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080733195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:30,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:30,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:09:30,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674054871] [2023-11-06 22:09:30,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:30,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:09:30,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:30,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:09:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:09:32,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 507 [2023-11-06 22:09:32,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 326 flow. Second operand has 10 states, 10 states have (on average 222.4) internal successors, (2224), 10 states have internal predecessors, (2224), 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) [2023-11-06 22:09:32,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:32,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 507 [2023-11-06 22:09:32,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:33,162 INFO L124 PetriNetUnfolderBase]: 1567/2737 cut-off events. [2023-11-06 22:09:33,163 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-11-06 22:09:33,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5955 conditions, 2737 events. 1567/2737 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11553 event pairs, 438 based on Foata normal form. 0/2381 useless extension candidates. Maximal degree in co-relation 5939. Up to 1861 conditions per place. [2023-11-06 22:09:33,185 INFO L140 encePairwiseOnDemand]: 497/507 looper letters, 92 selfloop transitions, 20 changer transitions 9/129 dead transitions. [2023-11-06 22:09:33,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 685 flow [2023-11-06 22:09:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1876 transitions. [2023-11-06 22:09:33,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625246548323471 [2023-11-06 22:09:33,196 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1876 transitions. [2023-11-06 22:09:33,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1876 transitions. [2023-11-06 22:09:33,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:33,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1876 transitions. [2023-11-06 22:09:33,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 234.5) internal successors, (1876), 8 states have internal predecessors, (1876), 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) [2023-11-06 22:09:33,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 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) [2023-11-06 22:09:33,218 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 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) [2023-11-06 22:09:33,218 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 326 flow. Second operand 8 states and 1876 transitions. [2023-11-06 22:09:33,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 685 flow [2023-11-06 22:09:33,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 661 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-06 22:09:33,226 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 378 flow [2023-11-06 22:09:33,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=378, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-06 22:09:33,231 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2023-11-06 22:09:33,232 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 378 flow [2023-11-06 22:09:33,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 222.4) internal successors, (2224), 10 states have internal predecessors, (2224), 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) [2023-11-06 22:09:33,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:33,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:33,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:09:33,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:33,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash 317099910, now seen corresponding path program 2 times [2023-11-06 22:09:33,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:33,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86065190] [2023-11-06 22:09:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:34,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:34,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86065190] [2023-11-06 22:09:34,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86065190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:34,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:34,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:09:34,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444175260] [2023-11-06 22:09:34,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:34,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:09:34,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:34,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:09:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:09:35,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 507 [2023-11-06 22:09:35,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 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) [2023-11-06 22:09:35,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:35,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 507 [2023-11-06 22:09:35,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:36,885 INFO L124 PetriNetUnfolderBase]: 1648/2882 cut-off events. [2023-11-06 22:09:36,885 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2023-11-06 22:09:36,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6468 conditions, 2882 events. 1648/2882 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12483 event pairs, 529 based on Foata normal form. 0/2493 useless extension candidates. Maximal degree in co-relation 6450. Up to 1699 conditions per place. [2023-11-06 22:09:36,908 INFO L140 encePairwiseOnDemand]: 497/507 looper letters, 91 selfloop transitions, 22 changer transitions 8/129 dead transitions. [2023-11-06 22:09:36,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 129 transitions, 733 flow [2023-11-06 22:09:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1857 transitions. [2023-11-06 22:09:36,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578402366863905 [2023-11-06 22:09:36,919 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1857 transitions. [2023-11-06 22:09:36,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1857 transitions. [2023-11-06 22:09:36,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:36,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1857 transitions. [2023-11-06 22:09:36,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 232.125) internal successors, (1857), 8 states have internal predecessors, (1857), 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) [2023-11-06 22:09:36,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 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) [2023-11-06 22:09:36,963 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 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) [2023-11-06 22:09:36,963 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 378 flow. Second operand 8 states and 1857 transitions. [2023-11-06 22:09:36,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 129 transitions, 733 flow [2023-11-06 22:09:36,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 697 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-06 22:09:36,972 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 425 flow [2023-11-06 22:09:36,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=425, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-11-06 22:09:36,975 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2023-11-06 22:09:36,978 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 425 flow [2023-11-06 22:09:36,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 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) [2023-11-06 22:09:36,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:36,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:36,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:09:36,980 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:36,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:36,981 INFO L85 PathProgramCache]: Analyzing trace with hash 316869270, now seen corresponding path program 3 times [2023-11-06 22:09:36,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:36,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011347514] [2023-11-06 22:09:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:36,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:37,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:37,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011347514] [2023-11-06 22:09:37,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011347514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:37,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:37,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:09:37,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825481522] [2023-11-06 22:09:37,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:37,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:09:37,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:09:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:09:39,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 507 [2023-11-06 22:09:39,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 425 flow. Second operand has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 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) [2023-11-06 22:09:39,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:39,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 507 [2023-11-06 22:09:39,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:39,953 INFO L124 PetriNetUnfolderBase]: 1635/2851 cut-off events. [2023-11-06 22:09:39,954 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2023-11-06 22:09:39,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6494 conditions, 2851 events. 1635/2851 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12281 event pairs, 518 based on Foata normal form. 0/2475 useless extension candidates. Maximal degree in co-relation 6474. Up to 1699 conditions per place. [2023-11-06 22:09:39,974 INFO L140 encePairwiseOnDemand]: 498/507 looper letters, 89 selfloop transitions, 22 changer transitions 9/127 dead transitions. [2023-11-06 22:09:39,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 127 transitions, 758 flow [2023-11-06 22:09:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1855 transitions. [2023-11-06 22:09:39,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573471400394477 [2023-11-06 22:09:39,983 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1855 transitions. [2023-11-06 22:09:39,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1855 transitions. [2023-11-06 22:09:39,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:39,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1855 transitions. [2023-11-06 22:09:39,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 231.875) internal successors, (1855), 8 states have internal predecessors, (1855), 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) [2023-11-06 22:09:39,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 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) [2023-11-06 22:09:39,999 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 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) [2023-11-06 22:09:39,999 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 425 flow. Second operand 8 states and 1855 transitions. [2023-11-06 22:09:39,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 127 transitions, 758 flow [2023-11-06 22:09:40,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 127 transitions, 731 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:09:40,009 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 434 flow [2023-11-06 22:09:40,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=434, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2023-11-06 22:09:40,011 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2023-11-06 22:09:40,011 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 434 flow [2023-11-06 22:09:40,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 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) [2023-11-06 22:09:40,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:40,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:40,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:09:40,013 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:40,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash -166419602, now seen corresponding path program 1 times [2023-11-06 22:09:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:40,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839435109] [2023-11-06 22:09:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:40,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:40,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839435109] [2023-11-06 22:09:40,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839435109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:40,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:40,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:40,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318399135] [2023-11-06 22:09:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:40,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:40,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:40,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:40,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 507 [2023-11-06 22:09:40,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2023-11-06 22:09:40,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:40,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 507 [2023-11-06 22:09:40,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:40,440 INFO L124 PetriNetUnfolderBase]: 977/1823 cut-off events. [2023-11-06 22:09:40,440 INFO L125 PetriNetUnfolderBase]: For 715/715 co-relation queries the response was YES. [2023-11-06 22:09:40,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4384 conditions, 1823 events. 977/1823 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7759 event pairs, 223 based on Foata normal form. 2/1684 useless extension candidates. Maximal degree in co-relation 4364. Up to 1347 conditions per place. [2023-11-06 22:09:40,451 INFO L140 encePairwiseOnDemand]: 501/507 looper letters, 76 selfloop transitions, 6 changer transitions 1/95 dead transitions. [2023-11-06 22:09:40,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 95 transitions, 637 flow [2023-11-06 22:09:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 835 transitions. [2023-11-06 22:09:40,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489809335963182 [2023-11-06 22:09:40,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 835 transitions. [2023-11-06 22:09:40,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 835 transitions. [2023-11-06 22:09:40,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:40,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 835 transitions. [2023-11-06 22:09:40,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 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) [2023-11-06 22:09:40,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 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) [2023-11-06 22:09:40,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 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) [2023-11-06 22:09:40,463 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 434 flow. Second operand 3 states and 835 transitions. [2023-11-06 22:09:40,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 95 transitions, 637 flow [2023-11-06 22:09:40,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 95 transitions, 593 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:09:40,472 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 402 flow [2023-11-06 22:09:40,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2023-11-06 22:09:40,473 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 25 predicate places. [2023-11-06 22:09:40,473 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 402 flow [2023-11-06 22:09:40,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2023-11-06 22:09:40,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:40,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:40,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:09:40,474 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:40,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1037432260, now seen corresponding path program 1 times [2023-11-06 22:09:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:40,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677264024] [2023-11-06 22:09:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:41,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:41,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677264024] [2023-11-06 22:09:41,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677264024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:41,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:41,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:09:41,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706476124] [2023-11-06 22:09:41,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:41,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:09:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:41,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:09:41,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:09:43,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 507 [2023-11-06 22:09:43,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 402 flow. Second operand has 12 states, 12 states have (on average 222.91666666666666) internal successors, (2675), 12 states have internal predecessors, (2675), 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) [2023-11-06 22:09:43,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:43,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 507 [2023-11-06 22:09:43,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:44,277 INFO L124 PetriNetUnfolderBase]: 1015/1890 cut-off events. [2023-11-06 22:09:44,277 INFO L125 PetriNetUnfolderBase]: For 541/543 co-relation queries the response was YES. [2023-11-06 22:09:44,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4555 conditions, 1890 events. 1015/1890 cut-off events. For 541/543 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8078 event pairs, 452 based on Foata normal form. 0/1817 useless extension candidates. Maximal degree in co-relation 4535. Up to 1080 conditions per place. [2023-11-06 22:09:44,291 INFO L140 encePairwiseOnDemand]: 494/507 looper letters, 104 selfloop transitions, 26 changer transitions 11/148 dead transitions. [2023-11-06 22:09:44,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 148 transitions, 850 flow [2023-11-06 22:09:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:09:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:09:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2546 transitions. [2023-11-06 22:09:44,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45651784113322574 [2023-11-06 22:09:44,305 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2546 transitions. [2023-11-06 22:09:44,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2546 transitions. [2023-11-06 22:09:44,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:44,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2546 transitions. [2023-11-06 22:09:44,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 231.45454545454547) internal successors, (2546), 11 states have internal predecessors, (2546), 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) [2023-11-06 22:09:44,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 507.0) internal successors, (6084), 12 states have internal predecessors, (6084), 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) [2023-11-06 22:09:44,329 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 507.0) internal successors, (6084), 12 states have internal predecessors, (6084), 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) [2023-11-06 22:09:44,330 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 402 flow. Second operand 11 states and 2546 transitions. [2023-11-06 22:09:44,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 148 transitions, 850 flow [2023-11-06 22:09:44,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 148 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:44,339 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 496 flow [2023-11-06 22:09:44,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=496, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-06 22:09:44,342 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 37 predicate places. [2023-11-06 22:09:44,343 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 496 flow [2023-11-06 22:09:44,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 222.91666666666666) internal successors, (2675), 12 states have internal predecessors, (2675), 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) [2023-11-06 22:09:44,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:44,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:44,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:09:44,345 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:09:44,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash 646378870, now seen corresponding path program 2 times [2023-11-06 22:09:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:44,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009099317] [2023-11-06 22:09:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:04,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:04,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009099317] [2023-11-06 22:10:04,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009099317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:04,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:04,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 22:10:04,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461176041] [2023-11-06 22:10:04,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:04,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:10:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:04,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:10:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:10:09,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:10:14,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:10:24,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:10:35,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 507 [2023-11-06 22:10:35,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 496 flow. Second operand has 16 states, 16 states have (on average 222.1875) internal successors, (3555), 16 states have internal predecessors, (3555), 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) [2023-11-06 22:10:35,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:35,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 507 [2023-11-06 22:10:35,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:49,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:10:52,682 INFO L124 PetriNetUnfolderBase]: 1253/2352 cut-off events. [2023-11-06 22:10:52,682 INFO L125 PetriNetUnfolderBase]: For 875/875 co-relation queries the response was YES. [2023-11-06 22:10:52,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5782 conditions, 2352 events. 1253/2352 cut-off events. For 875/875 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10633 event pairs, 400 based on Foata normal form. 0/2289 useless extension candidates. Maximal degree in co-relation 5758. Up to 804 conditions per place. [2023-11-06 22:10:52,697 INFO L140 encePairwiseOnDemand]: 489/507 looper letters, 127 selfloop transitions, 38 changer transitions 12/184 dead transitions. [2023-11-06 22:10:52,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 184 transitions, 1087 flow [2023-11-06 22:10:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:10:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:10:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3237 transitions. [2023-11-06 22:10:52,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45604395604395603 [2023-11-06 22:10:52,715 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3237 transitions. [2023-11-06 22:10:52,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3237 transitions. [2023-11-06 22:10:52,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:52,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3237 transitions. [2023-11-06 22:10:52,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 231.21428571428572) internal successors, (3237), 14 states have internal predecessors, (3237), 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) [2023-11-06 22:10:52,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 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) [2023-11-06 22:10:52,752 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 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) [2023-11-06 22:10:52,753 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 496 flow. Second operand 14 states and 3237 transitions. [2023-11-06 22:10:52,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 184 transitions, 1087 flow [2023-11-06 22:10:52,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 184 transitions, 1033 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-06 22:10:52,770 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 603 flow [2023-11-06 22:10:52,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=603, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2023-11-06 22:10:52,771 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 49 predicate places. [2023-11-06 22:10:52,771 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 603 flow [2023-11-06 22:10:52,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 222.1875) internal successors, (3555), 16 states have internal predecessors, (3555), 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) [2023-11-06 22:10:52,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:52,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:52,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:10:52,774 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:10:52,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:52,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1990213930, now seen corresponding path program 3 times [2023-11-06 22:10:52,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:52,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832505690] [2023-11-06 22:10:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:52,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:14,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:14,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832505690] [2023-11-06 22:11:14,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832505690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:14,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:14,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:11:14,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209676519] [2023-11-06 22:11:14,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:14,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:11:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:14,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:11:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:11:17,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:21,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:30,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:33,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:37,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:40,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:41,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:48,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:50,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:58,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 507 [2023-11-06 22:11:58,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 603 flow. Second operand has 15 states, 15 states have (on average 222.33333333333334) internal successors, (3335), 15 states have internal predecessors, (3335), 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) [2023-11-06 22:11:58,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:58,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 507 [2023-11-06 22:11:58,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:10,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:12:11,177 INFO L124 PetriNetUnfolderBase]: 1448/2708 cut-off events. [2023-11-06 22:12:11,177 INFO L125 PetriNetUnfolderBase]: For 1379/1379 co-relation queries the response was YES. [2023-11-06 22:12:11,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 2708 events. 1448/2708 cut-off events. For 1379/1379 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12765 event pairs, 271 based on Foata normal form. 8/2650 useless extension candidates. Maximal degree in co-relation 6934. Up to 784 conditions per place. [2023-11-06 22:12:11,194 INFO L140 encePairwiseOnDemand]: 489/507 looper letters, 130 selfloop transitions, 41 changer transitions 12/190 dead transitions. [2023-11-06 22:12:11,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 190 transitions, 1212 flow [2023-11-06 22:12:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:12:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:12:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3237 transitions. [2023-11-06 22:12:11,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45604395604395603 [2023-11-06 22:12:11,211 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3237 transitions. [2023-11-06 22:12:11,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3237 transitions. [2023-11-06 22:12:11,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:11,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3237 transitions. [2023-11-06 22:12:11,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 231.21428571428572) internal successors, (3237), 14 states have internal predecessors, (3237), 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) [2023-11-06 22:12:11,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 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) [2023-11-06 22:12:11,244 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 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) [2023-11-06 22:12:11,244 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 603 flow. Second operand 14 states and 3237 transitions. [2023-11-06 22:12:11,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 190 transitions, 1212 flow [2023-11-06 22:12:11,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 190 transitions, 1154 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-06 22:12:11,267 INFO L231 Difference]: Finished difference. Result has 123 places, 103 transitions, 707 flow [2023-11-06 22:12:11,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=707, PETRI_PLACES=123, PETRI_TRANSITIONS=103} [2023-11-06 22:12:11,268 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 59 predicate places. [2023-11-06 22:12:11,268 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 103 transitions, 707 flow [2023-11-06 22:12:11,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 222.33333333333334) internal successors, (3335), 15 states have internal predecessors, (3335), 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) [2023-11-06 22:12:11,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:11,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:11,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:12:11,270 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:12:11,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:11,271 INFO L85 PathProgramCache]: Analyzing trace with hash -705762327, now seen corresponding path program 1 times [2023-11-06 22:12:11,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:11,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666760850] [2023-11-06 22:12:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:11,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:12,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:12,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666760850] [2023-11-06 22:12:12,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666760850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:12,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:12,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:12:12,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570551180] [2023-11-06 22:12:12,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:12,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:12:12,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:12:12,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:12:13,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 507 [2023-11-06 22:12:13,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 103 transitions, 707 flow. Second operand has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 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) [2023-11-06 22:12:13,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:13,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 507 [2023-11-06 22:12:13,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:14,359 INFO L124 PetriNetUnfolderBase]: 1507/2807 cut-off events. [2023-11-06 22:12:14,360 INFO L125 PetriNetUnfolderBase]: For 2253/2259 co-relation queries the response was YES. [2023-11-06 22:12:14,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7537 conditions, 2807 events. 1507/2807 cut-off events. For 2253/2259 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13319 event pairs, 531 based on Foata normal form. 9/2745 useless extension candidates. Maximal degree in co-relation 7503. Up to 1486 conditions per place. [2023-11-06 22:12:14,378 INFO L140 encePairwiseOnDemand]: 493/507 looper letters, 111 selfloop transitions, 36 changer transitions 11/165 dead transitions. [2023-11-06 22:12:14,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 165 transitions, 1198 flow [2023-11-06 22:12:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:12:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:12:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2565 transitions. [2023-11-06 22:12:14,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45992469069392145 [2023-11-06 22:12:14,388 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2565 transitions. [2023-11-06 22:12:14,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2565 transitions. [2023-11-06 22:12:14,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:14,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2565 transitions. [2023-11-06 22:12:14,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.1818181818182) internal successors, (2565), 11 states have internal predecessors, (2565), 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) [2023-11-06 22:12:14,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 507.0) internal successors, (6084), 12 states have internal predecessors, (6084), 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) [2023-11-06 22:12:14,407 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 507.0) internal successors, (6084), 12 states have internal predecessors, (6084), 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) [2023-11-06 22:12:14,407 INFO L175 Difference]: Start difference. First operand has 123 places, 103 transitions, 707 flow. Second operand 11 states and 2565 transitions. [2023-11-06 22:12:14,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 165 transitions, 1198 flow [2023-11-06 22:12:14,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 165 transitions, 1131 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-11-06 22:12:14,431 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 790 flow [2023-11-06 22:12:14,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=790, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2023-11-06 22:12:14,432 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 63 predicate places. [2023-11-06 22:12:14,432 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 790 flow [2023-11-06 22:12:14,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 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) [2023-11-06 22:12:14,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:14,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:14,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:12:14,434 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:12:14,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:14,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1598457865, now seen corresponding path program 2 times [2023-11-06 22:12:14,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:14,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882200690] [2023-11-06 22:12:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:14,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:15,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:15,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882200690] [2023-11-06 22:12:15,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882200690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:15,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:15,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:12:15,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042386102] [2023-11-06 22:12:15,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:12:15,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:12:15,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:12:17,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 507 [2023-11-06 22:12:17,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 109 transitions, 790 flow. Second operand has 13 states, 13 states have (on average 226.76923076923077) internal successors, (2948), 13 states have internal predecessors, (2948), 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) [2023-11-06 22:12:17,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:17,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 507 [2023-11-06 22:12:17,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:18,346 INFO L124 PetriNetUnfolderBase]: 1764/3290 cut-off events. [2023-11-06 22:12:18,346 INFO L125 PetriNetUnfolderBase]: For 3272/3278 co-relation queries the response was YES. [2023-11-06 22:12:18,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9019 conditions, 3290 events. 1764/3290 cut-off events. For 3272/3278 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 16504 event pairs, 514 based on Foata normal form. 23/3233 useless extension candidates. Maximal degree in co-relation 8982. Up to 1503 conditions per place. [2023-11-06 22:12:18,374 INFO L140 encePairwiseOnDemand]: 493/507 looper letters, 128 selfloop transitions, 34 changer transitions 8/177 dead transitions. [2023-11-06 22:12:18,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 177 transitions, 1353 flow [2023-11-06 22:12:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:12:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:12:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2368 transitions. [2023-11-06 22:12:18,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670611439842209 [2023-11-06 22:12:18,381 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2368 transitions. [2023-11-06 22:12:18,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2368 transitions. [2023-11-06 22:12:18,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:18,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2368 transitions. [2023-11-06 22:12:18,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 236.8) internal successors, (2368), 10 states have internal predecessors, (2368), 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) [2023-11-06 22:12:18,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 507.0) internal successors, (5577), 11 states have internal predecessors, (5577), 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) [2023-11-06 22:12:18,395 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 507.0) internal successors, (5577), 11 states have internal predecessors, (5577), 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) [2023-11-06 22:12:18,396 INFO L175 Difference]: Start difference. First operand has 127 places, 109 transitions, 790 flow. Second operand 10 states and 2368 transitions. [2023-11-06 22:12:18,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 177 transitions, 1353 flow [2023-11-06 22:12:18,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 177 transitions, 1305 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-06 22:12:18,426 INFO L231 Difference]: Finished difference. Result has 133 places, 115 transitions, 908 flow [2023-11-06 22:12:18,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=908, PETRI_PLACES=133, PETRI_TRANSITIONS=115} [2023-11-06 22:12:18,427 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 69 predicate places. [2023-11-06 22:12:18,427 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 115 transitions, 908 flow [2023-11-06 22:12:18,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 226.76923076923077) internal successors, (2948), 13 states have internal predecessors, (2948), 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) [2023-11-06 22:12:18,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:18,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:18,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:12:18,428 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:12:18,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:18,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1435452557, now seen corresponding path program 3 times [2023-11-06 22:12:18,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:18,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423361964] [2023-11-06 22:12:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:18,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:19,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:19,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423361964] [2023-11-06 22:12:19,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423361964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:19,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:19,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:12:19,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895479180] [2023-11-06 22:12:19,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:19,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:12:19,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:12:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:12:21,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 507 [2023-11-06 22:12:21,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 115 transitions, 908 flow. Second operand has 12 states, 12 states have (on average 227.0) internal successors, (2724), 12 states have internal predecessors, (2724), 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) [2023-11-06 22:12:21,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:21,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 507 [2023-11-06 22:12:21,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:22,022 INFO L124 PetriNetUnfolderBase]: 1535/2874 cut-off events. [2023-11-06 22:12:22,023 INFO L125 PetriNetUnfolderBase]: For 3870/3874 co-relation queries the response was YES. [2023-11-06 22:12:22,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8293 conditions, 2874 events. 1535/2874 cut-off events. For 3870/3874 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13824 event pairs, 542 based on Foata normal form. 14/2819 useless extension candidates. Maximal degree in co-relation 8253. Up to 1419 conditions per place. [2023-11-06 22:12:22,040 INFO L140 encePairwiseOnDemand]: 495/507 looper letters, 116 selfloop transitions, 34 changer transitions 11/168 dead transitions. [2023-11-06 22:12:22,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 168 transitions, 1335 flow [2023-11-06 22:12:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:12:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:12:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2586 transitions. [2023-11-06 22:12:22,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636901559978483 [2023-11-06 22:12:22,047 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2586 transitions. [2023-11-06 22:12:22,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2586 transitions. [2023-11-06 22:12:22,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:22,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2586 transitions. [2023-11-06 22:12:22,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 235.0909090909091) internal successors, (2586), 11 states have internal predecessors, (2586), 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) [2023-11-06 22:12:22,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 507.0) internal successors, (6084), 12 states have internal predecessors, (6084), 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) [2023-11-06 22:12:22,059 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 507.0) internal successors, (6084), 12 states have internal predecessors, (6084), 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) [2023-11-06 22:12:22,060 INFO L175 Difference]: Start difference. First operand has 133 places, 115 transitions, 908 flow. Second operand 11 states and 2586 transitions. [2023-11-06 22:12:22,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 168 transitions, 1335 flow [2023-11-06 22:12:22,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 168 transitions, 1278 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-06 22:12:22,093 INFO L231 Difference]: Finished difference. Result has 138 places, 111 transitions, 893 flow [2023-11-06 22:12:22,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=893, PETRI_PLACES=138, PETRI_TRANSITIONS=111} [2023-11-06 22:12:22,094 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 74 predicate places. [2023-11-06 22:12:22,094 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 111 transitions, 893 flow [2023-11-06 22:12:22,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 227.0) internal successors, (2724), 12 states have internal predecessors, (2724), 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) [2023-11-06 22:12:22,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:22,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:22,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:12:22,096 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:12:22,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:22,097 INFO L85 PathProgramCache]: Analyzing trace with hash -937195399, now seen corresponding path program 1 times [2023-11-06 22:12:22,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:22,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009156118] [2023-11-06 22:12:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:23,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:23,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009156118] [2023-11-06 22:12:23,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009156118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:23,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:23,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:12:23,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966188475] [2023-11-06 22:12:23,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:23,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:12:23,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:23,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:12:23,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:12:25,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 507 [2023-11-06 22:12:25,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 111 transitions, 893 flow. Second operand has 15 states, 15 states have (on average 225.4) internal successors, (3381), 15 states have internal predecessors, (3381), 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) [2023-11-06 22:12:25,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:25,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 507 [2023-11-06 22:12:25,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:26,423 INFO L124 PetriNetUnfolderBase]: 1683/3161 cut-off events. [2023-11-06 22:12:26,423 INFO L125 PetriNetUnfolderBase]: For 4250/4254 co-relation queries the response was YES. [2023-11-06 22:12:26,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9031 conditions, 3161 events. 1683/3161 cut-off events. For 4250/4254 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 15311 event pairs, 372 based on Foata normal form. 8/3091 useless extension candidates. Maximal degree in co-relation 8990. Up to 787 conditions per place. [2023-11-06 22:12:26,439 INFO L140 encePairwiseOnDemand]: 491/507 looper letters, 137 selfloop transitions, 46 changer transitions 11/201 dead transitions. [2023-11-06 22:12:26,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 201 transitions, 1525 flow [2023-11-06 22:12:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:12:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:12:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3277 transitions. [2023-11-06 22:12:26,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616793462947309 [2023-11-06 22:12:26,447 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3277 transitions. [2023-11-06 22:12:26,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3277 transitions. [2023-11-06 22:12:26,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:26,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3277 transitions. [2023-11-06 22:12:26,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 234.07142857142858) internal successors, (3277), 14 states have internal predecessors, (3277), 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) [2023-11-06 22:12:26,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 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) [2023-11-06 22:12:26,464 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 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) [2023-11-06 22:12:26,464 INFO L175 Difference]: Start difference. First operand has 138 places, 111 transitions, 893 flow. Second operand 14 states and 3277 transitions. [2023-11-06 22:12:26,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 201 transitions, 1525 flow [2023-11-06 22:12:26,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 201 transitions, 1456 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-11-06 22:12:26,498 INFO L231 Difference]: Finished difference. Result has 146 places, 116 transitions, 999 flow [2023-11-06 22:12:26,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=999, PETRI_PLACES=146, PETRI_TRANSITIONS=116} [2023-11-06 22:12:26,499 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 82 predicate places. [2023-11-06 22:12:26,499 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 116 transitions, 999 flow [2023-11-06 22:12:26,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 225.4) internal successors, (3381), 15 states have internal predecessors, (3381), 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) [2023-11-06 22:12:26,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:26,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:26,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:12:26,500 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:12:26,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:26,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1816556174, now seen corresponding path program 1 times [2023-11-06 22:12:26,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:26,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673606761] [2023-11-06 22:12:26,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:26,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:29,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:29,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673606761] [2023-11-06 22:12:29,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673606761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:29,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:29,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-06 22:12:29,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110339741] [2023-11-06 22:12:29,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:29,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:12:29,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:29,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:12:29,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380