./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_longest.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_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/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_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/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_2d442c47-607a-4981-9973-e0060cdc4d8b/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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:51,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:51,613 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:53:51,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:51,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:51,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:51,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:51,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:51,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:51,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:51,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:51,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:51,650 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:51,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:51,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:53:51,652 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:51,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:51,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:51,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:51,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:53:51,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:51,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:53:51,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:51,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:53:51,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:51,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:51,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:51,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:51,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:51,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:51,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:51,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:53:51,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:51,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:51,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:51,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:53:51,662 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:51,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:51,664 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:51,664 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_2d442c47-607a-4981-9973-e0060cdc4d8b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2023-11-06 21:53:51,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:51,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:51,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:51,998 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:51,998 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:52,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/queue_longest.i [2023-11-06 21:53:55,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:55,395 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:55,397 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/sv-benchmarks/c/pthread/queue_longest.i [2023-11-06 21:53:55,420 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/data/4004f8784/19c861beab804cde864c3b0c26149b9c/FLAGf69b4655b [2023-11-06 21:53:55,435 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/data/4004f8784/19c861beab804cde864c3b0c26149b9c [2023-11-06 21:53:55,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:55,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:55,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:55,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:55,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:55,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:55" (1/1) ... [2023-11-06 21:53:55,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266250be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:55, skipping insertion in model container [2023-11-06 21:53:55,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:55" (1/1) ... [2023-11-06 21:53:55,510 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:56,061 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_2d442c47-607a-4981-9973-e0060cdc4d8b/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2023-11-06 21:53:56,074 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_2d442c47-607a-4981-9973-e0060cdc4d8b/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2023-11-06 21:53:56,077 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_2d442c47-607a-4981-9973-e0060cdc4d8b/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2023-11-06 21:53:56,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:56,097 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:53:56,143 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_2d442c47-607a-4981-9973-e0060cdc4d8b/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2023-11-06 21:53:56,145 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_2d442c47-607a-4981-9973-e0060cdc4d8b/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2023-11-06 21:53:56,149 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_2d442c47-607a-4981-9973-e0060cdc4d8b/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2023-11-06 21:53:56,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:56,228 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:53:56,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56 WrapperNode [2023-11-06 21:53:56,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:56,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:56,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:53:56,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:53:56,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,310 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 242 [2023-11-06 21:53:56,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:56,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:53:56,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:53:56,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:53:56,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:53:56,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:53:56,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:53:56,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:53:56,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:56,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:56,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:53:56,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d442c47-607a-4981-9973-e0060cdc4d8b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:53:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 21:53:56,459 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 21:53:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 21:53:56,460 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 21:53:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:53:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:53:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:53:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:53:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:53:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:53:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:53:56,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:53:56,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:53:56,465 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 21:53:56,671 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:53:56,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:53:57,134 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:53:57,148 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:53:57,149 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:53:57,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:57 BoogieIcfgContainer [2023-11-06 21:53:57,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:53:57,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:53:57,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:53:57,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:53:57,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:55" (1/3) ... [2023-11-06 21:53:57,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2a8775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:57, skipping insertion in model container [2023-11-06 21:53:57,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56" (2/3) ... [2023-11-06 21:53:57,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2a8775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:57, skipping insertion in model container [2023-11-06 21:53:57,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:57" (3/3) ... [2023-11-06 21:53:57,162 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-11-06 21:53:57,170 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:53:57,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:53:57,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-06 21:53:57,183 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:53:57,371 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:53:57,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 270 transitions, 554 flow [2023-11-06 21:53:57,618 INFO L124 PetriNetUnfolderBase]: 15/268 cut-off events. [2023-11-06 21:53:57,618 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:53:57,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 268 events. 15/268 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 369 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 194. Up to 2 conditions per place. [2023-11-06 21:53:57,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 270 transitions, 554 flow [2023-11-06 21:53:57,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 258 transitions, 525 flow [2023-11-06 21:53:57,654 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:53:57,670 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 258 transitions, 525 flow [2023-11-06 21:53:57,677 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 258 transitions, 525 flow [2023-11-06 21:53:57,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 525 flow [2023-11-06 21:53:57,796 INFO L124 PetriNetUnfolderBase]: 15/258 cut-off events. [2023-11-06 21:53:57,796 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:53:57,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 258 events. 15/258 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 334 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 194. Up to 2 conditions per place. [2023-11-06 21:53:57,810 INFO L119 LiptonReduction]: Number of co-enabled transitions 17164 [2023-11-06 21:54:07,680 INFO L134 LiptonReduction]: Checked pairs total: 33166 [2023-11-06 21:54:07,685 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-11-06 21:54:07,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:07,728 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;@e15efbf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:07,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 21:54:07,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:54:07,730 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:54:07,730 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:07,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:07,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:54:07,732 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 21:54:07,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1047, now seen corresponding path program 1 times [2023-11-06 21:54:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:07,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584761393] [2023-11-06 21:54:07,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:07,910 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 21:54:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:07,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584761393] [2023-11-06 21:54:07,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584761393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:07,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:07,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:54:07,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466790273] [2023-11-06 21:54:07,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:07,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:54:07,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:54:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:54:07,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 498 [2023-11-06 21:54:07,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 139 flow. Second operand has 2 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 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 21:54:07,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:07,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 498 [2023-11-06 21:54:07,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:08,482 INFO L124 PetriNetUnfolderBase]: 1795/2998 cut-off events. [2023-11-06 21:54:08,483 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-06 21:54:08,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5858 conditions, 2998 events. 1795/2998 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13719 event pairs, 1455 based on Foata normal form. 38/2576 useless extension candidates. Maximal degree in co-relation 5682. Up to 2783 conditions per place. [2023-11-06 21:54:08,511 INFO L140 encePairwiseOnDemand]: 496/498 looper letters, 56 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-11-06 21:54:08,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 247 flow [2023-11-06 21:54:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:54:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:54:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 572 transitions. [2023-11-06 21:54:08,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5742971887550201 [2023-11-06 21:54:08,539 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 572 transitions. [2023-11-06 21:54:08,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 572 transitions. [2023-11-06 21:54:08,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:08,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 572 transitions. [2023-11-06 21:54:08,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 286.0) internal successors, (572), 2 states have internal predecessors, (572), 0 states have call successors, (0), 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 21:54:08,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 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 21:54:08,562 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 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 21:54:08,565 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 139 flow. Second operand 2 states and 572 transitions. [2023-11-06 21:54:08,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 247 flow [2023-11-06 21:54:08,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:54:08,574 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-11-06 21:54:08,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, 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 21:54:08,581 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-11-06 21:54:08,581 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-11-06 21:54:08,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 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 21:54:08,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:08,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:08,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:54:08,583 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 21:54:08,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:08,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2045173191, now seen corresponding path program 1 times [2023-11-06 21:54:08,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:08,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128080663] [2023-11-06 21:54:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:08,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:08,949 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 21:54:08,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:08,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128080663] [2023-11-06 21:54:08,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128080663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:08,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:08,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:08,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581068107] [2023-11-06 21:54:08,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:08,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:08,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 498 [2023-11-06 21:54:08,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 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 21:54:08,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:08,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 498 [2023-11-06 21:54:08,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:09,415 INFO L124 PetriNetUnfolderBase]: 1755/2962 cut-off events. [2023-11-06 21:54:09,416 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 21:54:09,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5764 conditions, 2962 events. 1755/2962 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13819 event pairs, 1401 based on Foata normal form. 0/2540 useless extension candidates. Maximal degree in co-relation 5761. Up to 2611 conditions per place. [2023-11-06 21:54:09,438 INFO L140 encePairwiseOnDemand]: 494/498 looper letters, 74 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2023-11-06 21:54:09,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 328 flow [2023-11-06 21:54:09,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 834 transitions. [2023-11-06 21:54:09,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582329317269076 [2023-11-06 21:54:09,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 834 transitions. [2023-11-06 21:54:09,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 834 transitions. [2023-11-06 21:54:09,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:09,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 834 transitions. [2023-11-06 21:54:09,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 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 21:54:09,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 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 21:54:09,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 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 21:54:09,454 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 834 transitions. [2023-11-06 21:54:09,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 328 flow [2023-11-06 21:54:09,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:09,458 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-11-06 21:54:09,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, 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 21:54:09,459 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-11-06 21:54:09,460 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-11-06 21:54:09,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 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 21:54:09,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:09,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:09,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:54:09,462 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 21:54:09,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1684074440, now seen corresponding path program 1 times [2023-11-06 21:54:09,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:09,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347241612] [2023-11-06 21:54:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:09,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,064 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 21:54:10,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:10,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347241612] [2023-11-06 21:54:10,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347241612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:10,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:54:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585037390] [2023-11-06 21:54:10,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:10,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:10,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 498 [2023-11-06 21:54:10,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 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 21:54:10,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:10,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 498 [2023-11-06 21:54:10,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:11,024 INFO L124 PetriNetUnfolderBase]: 2039/3405 cut-off events. [2023-11-06 21:54:11,024 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-06 21:54:11,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6874 conditions, 3405 events. 2039/3405 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16252 event pairs, 1320 based on Foata normal form. 0/2950 useless extension candidates. Maximal degree in co-relation 6870. Up to 2844 conditions per place. [2023-11-06 21:54:11,051 INFO L140 encePairwiseOnDemand]: 484/498 looper letters, 76 selfloop transitions, 18 changer transitions 0/100 dead transitions. [2023-11-06 21:54:11,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 406 flow [2023-11-06 21:54:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:54:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:54:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1705 transitions. [2023-11-06 21:54:11,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4890992541594951 [2023-11-06 21:54:11,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1705 transitions. [2023-11-06 21:54:11,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1705 transitions. [2023-11-06 21:54:11,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:11,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1705 transitions. [2023-11-06 21:54:11,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.57142857142858) internal successors, (1705), 7 states have internal predecessors, (1705), 0 states have call successors, (0), 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 21:54:11,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 498.0) internal successors, (3984), 8 states have internal predecessors, (3984), 0 states have call successors, (0), 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 21:54:11,082 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 498.0) internal successors, (3984), 8 states have internal predecessors, (3984), 0 states have call successors, (0), 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 21:54:11,083 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 7 states and 1705 transitions. [2023-11-06 21:54:11,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 406 flow [2023-11-06 21:54:11,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 100 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:11,095 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 252 flow [2023-11-06 21:54:11,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2023-11-06 21:54:11,097 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2023-11-06 21:54:11,097 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 252 flow [2023-11-06 21:54:11,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 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 21:54:11,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:11,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:11,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:54:11,100 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 21:54:11,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:11,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1609029703, now seen corresponding path program 1 times [2023-11-06 21:54:11,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:11,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268635278] [2023-11-06 21:54:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:11,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,004 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 21:54:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268635278] [2023-11-06 21:54:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268635278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:54:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57550240] [2023-11-06 21:54:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:54:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:17,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:54:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:54:31,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 498 [2023-11-06 21:54:31,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 252 flow. Second operand has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 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 21:54:31,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:31,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 498 [2023-11-06 21:54:31,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:49,289 INFO L124 PetriNetUnfolderBase]: 2692/4462 cut-off events. [2023-11-06 21:54:49,289 INFO L125 PetriNetUnfolderBase]: For 809/809 co-relation queries the response was YES. [2023-11-06 21:54:49,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9992 conditions, 4462 events. 2692/4462 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 22989 event pairs, 642 based on Foata normal form. 0/3962 useless extension candidates. Maximal degree in co-relation 9983. Up to 3251 conditions per place. [2023-11-06 21:54:49,326 INFO L140 encePairwiseOnDemand]: 485/498 looper letters, 164 selfloop transitions, 26 changer transitions 4/200 dead transitions. [2023-11-06 21:54:49,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 200 transitions, 955 flow [2023-11-06 21:54:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:54:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 21:54:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2311 transitions. [2023-11-06 21:54:49,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640562248995984 [2023-11-06 21:54:49,336 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2311 transitions. [2023-11-06 21:54:49,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2311 transitions. [2023-11-06 21:54:49,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:49,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2311 transitions. [2023-11-06 21:54:49,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 231.1) internal successors, (2311), 10 states have internal predecessors, (2311), 0 states have call successors, (0), 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 21:54:49,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 498.0) internal successors, (5478), 11 states have internal predecessors, (5478), 0 states have call successors, (0), 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 21:54:49,363 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 498.0) internal successors, (5478), 11 states have internal predecessors, (5478), 0 states have call successors, (0), 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 21:54:49,363 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 252 flow. Second operand 10 states and 2311 transitions. [2023-11-06 21:54:49,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 200 transitions, 955 flow [2023-11-06 21:54:49,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 200 transitions, 955 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:49,375 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 451 flow [2023-11-06 21:54:49,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=451, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2023-11-06 21:54:49,376 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2023-11-06 21:54:49,377 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 451 flow [2023-11-06 21:54:49,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 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 21:54:49,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:49,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:49,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:54:49,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 21:54:49,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1881682345, now seen corresponding path program 2 times [2023-11-06 21:54:49,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:49,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64485514] [2023-11-06 21:54:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,164 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 21:54:50,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:50,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64485514] [2023-11-06 21:54:50,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64485514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:50,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:50,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:54:50,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485901355] [2023-11-06 21:54:50,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:50,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:54:50,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:54:50,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:54:51,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 498 [2023-11-06 21:54:51,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 451 flow. Second operand has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 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 21:54:51,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:51,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 498 [2023-11-06 21:54:51,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:52,637 INFO L124 PetriNetUnfolderBase]: 3256/5412 cut-off events. [2023-11-06 21:54:52,638 INFO L125 PetriNetUnfolderBase]: For 1787/1787 co-relation queries the response was YES. [2023-11-06 21:54:52,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13219 conditions, 5412 events. 3256/5412 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 29413 event pairs, 441 based on Foata normal form. 0/4790 useless extension candidates. Maximal degree in co-relation 13201. Up to 3233 conditions per place. [2023-11-06 21:54:52,709 INFO L140 encePairwiseOnDemand]: 486/498 looper letters, 168 selfloop transitions, 36 changer transitions 4/214 dead transitions. [2023-11-06 21:54:52,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 214 transitions, 1180 flow [2023-11-06 21:54:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:54:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 21:54:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2311 transitions. [2023-11-06 21:54:52,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640562248995984 [2023-11-06 21:54:52,719 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2311 transitions. [2023-11-06 21:54:52,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2311 transitions. [2023-11-06 21:54:52,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:52,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2311 transitions. [2023-11-06 21:54:52,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 231.1) internal successors, (2311), 10 states have internal predecessors, (2311), 0 states have call successors, (0), 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 21:54:52,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 498.0) internal successors, (5478), 11 states have internal predecessors, (5478), 0 states have call successors, (0), 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 21:54:52,741 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 498.0) internal successors, (5478), 11 states have internal predecessors, (5478), 0 states have call successors, (0), 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 21:54:52,741 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 451 flow. Second operand 10 states and 2311 transitions. [2023-11-06 21:54:52,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 214 transitions, 1180 flow [2023-11-06 21:54:52,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 214 transitions, 1158 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:52,765 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 636 flow [2023-11-06 21:54:52,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=636, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2023-11-06 21:54:52,768 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2023-11-06 21:54:52,768 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 636 flow [2023-11-06 21:54:52,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 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 21:54:52,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:52,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:52,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:54:52,770 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 21:54:52,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2078817431, now seen corresponding path program 1 times [2023-11-06 21:54:52,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360826818] [2023-11-06 21:54:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:52,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:53,468 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 21:54:53,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:53,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360826818] [2023-11-06 21:54:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360826818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:53,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:53,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:54:53,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140767704] [2023-11-06 21:54:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:53,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:54:53,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:53,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:54:53,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:54:54,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 498 [2023-11-06 21:54:54,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 636 flow. Second operand has 9 states, 9 states have (on average 214.44444444444446) internal successors, (1930), 9 states have internal predecessors, (1930), 0 states have call successors, (0), 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 21:54:54,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:54,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 498 [2023-11-06 21:54:54,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:55,793 INFO L124 PetriNetUnfolderBase]: 3255/5420 cut-off events. [2023-11-06 21:54:55,793 INFO L125 PetriNetUnfolderBase]: For 3077/3077 co-relation queries the response was YES. [2023-11-06 21:54:55,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14171 conditions, 5420 events. 3255/5420 cut-off events. For 3077/3077 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 29538 event pairs, 2254 based on Foata normal form. 0/4797 useless extension candidates. Maximal degree in co-relation 14147. Up to 5137 conditions per place. [2023-11-06 21:54:55,836 INFO L140 encePairwiseOnDemand]: 485/498 looper letters, 103 selfloop transitions, 20 changer transitions 0/129 dead transitions. [2023-11-06 21:54:55,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 129 transitions, 961 flow [2023-11-06 21:54:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 21:54:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2000 transitions. [2023-11-06 21:54:55,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462293618920125 [2023-11-06 21:54:55,847 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2000 transitions. [2023-11-06 21:54:55,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2000 transitions. [2023-11-06 21:54:55,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:55,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2000 transitions. [2023-11-06 21:54:55,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.22222222222223) internal successors, (2000), 9 states have internal predecessors, (2000), 0 states have call successors, (0), 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 21:54:55,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 498.0) internal successors, (4980), 10 states have internal predecessors, (4980), 0 states have call successors, (0), 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 21:54:55,867 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 498.0) internal successors, (4980), 10 states have internal predecessors, (4980), 0 states have call successors, (0), 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 21:54:55,867 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 636 flow. Second operand 9 states and 2000 transitions. [2023-11-06 21:54:55,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 129 transitions, 961 flow [2023-11-06 21:54:55,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 129 transitions, 919 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-06 21:54:55,890 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 733 flow [2023-11-06 21:54:55,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=733, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2023-11-06 21:54:55,895 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 49 predicate places. [2023-11-06 21:54:55,895 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 733 flow [2023-11-06 21:54:55,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 214.44444444444446) internal successors, (1930), 9 states have internal predecessors, (1930), 0 states have call successors, (0), 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 21:54:55,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:55,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:55,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:54:55,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 21:54:55,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:55,898 INFO L85 PathProgramCache]: Analyzing trace with hash 423629615, now seen corresponding path program 1 times [2023-11-06 21:54:55,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:55,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169732948] [2023-11-06 21:54:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:55,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:55,977 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 21:54:55,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:55,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169732948] [2023-11-06 21:54:55,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169732948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:55,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:55,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:55,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740332731] [2023-11-06 21:54:55,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:55,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:55,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 498 [2023-11-06 21:54:55,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 733 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 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 21:54:55,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:55,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 498 [2023-11-06 21:54:55,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:56,553 INFO L124 PetriNetUnfolderBase]: 1983/3424 cut-off events. [2023-11-06 21:54:56,553 INFO L125 PetriNetUnfolderBase]: For 1109/1109 co-relation queries the response was YES. [2023-11-06 21:54:56,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8431 conditions, 3424 events. 1983/3424 cut-off events. For 1109/1109 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15427 event pairs, 1094 based on Foata normal form. 0/3025 useless extension candidates. Maximal degree in co-relation 8402. Up to 1762 conditions per place. [2023-11-06 21:54:56,577 INFO L140 encePairwiseOnDemand]: 494/498 looper letters, 113 selfloop transitions, 3 changer transitions 1/126 dead transitions. [2023-11-06 21:54:56,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 126 transitions, 868 flow [2023-11-06 21:54:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-11-06 21:54:56,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609103078982597 [2023-11-06 21:54:56,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-11-06 21:54:56,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-11-06 21:54:56,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:56,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-11-06 21:54:56,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 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 21:54:56,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 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 21:54:56,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 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 21:54:56,593 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 733 flow. Second operand 3 states and 838 transitions. [2023-11-06 21:54:56,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 126 transitions, 868 flow [2023-11-06 21:54:56,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 126 transitions, 792 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-11-06 21:54:56,612 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 496 flow [2023-11-06 21:54:56,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=496, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2023-11-06 21:54:56,613 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2023-11-06 21:54:56,614 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 496 flow [2023-11-06 21:54:56,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 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 21:54:56,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:56,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:56,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:54:56,615 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 21:54:56,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:56,616 INFO L85 PathProgramCache]: Analyzing trace with hash 994481528, now seen corresponding path program 1 times [2023-11-06 21:54:56,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:56,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689345550] [2023-11-06 21:54:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:56,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:57,418 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 21:54:57,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:57,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689345550] [2023-11-06 21:54:57,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689345550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:57,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:57,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:54:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154257794] [2023-11-06 21:54:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:57,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:54:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:54:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:54:58,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 498 [2023-11-06 21:54:58,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 496 flow. Second operand has 10 states, 10 states have (on average 210.4) internal successors, (2104), 10 states have internal predecessors, (2104), 0 states have call successors, (0), 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 21:54:58,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:58,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 498 [2023-11-06 21:54:58,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:59,630 INFO L124 PetriNetUnfolderBase]: 1811/3095 cut-off events. [2023-11-06 21:54:59,631 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2023-11-06 21:54:59,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 3095 events. 1811/3095 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13121 event pairs, 580 based on Foata normal form. 22/2822 useless extension candidates. Maximal degree in co-relation 7280. Up to 2188 conditions per place. [2023-11-06 21:54:59,653 INFO L140 encePairwiseOnDemand]: 484/498 looper letters, 105 selfloop transitions, 27 changer transitions 10/149 dead transitions. [2023-11-06 21:54:59,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 830 flow [2023-11-06 21:54:59,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 21:54:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2006 transitions. [2023-11-06 21:54:59,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475680499776885 [2023-11-06 21:54:59,697 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2006 transitions. [2023-11-06 21:54:59,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2006 transitions. [2023-11-06 21:54:59,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:59,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2006 transitions. [2023-11-06 21:54:59,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.88888888888889) internal successors, (2006), 9 states have internal predecessors, (2006), 0 states have call successors, (0), 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 21:54:59,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 498.0) internal successors, (4980), 10 states have internal predecessors, (4980), 0 states have call successors, (0), 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 21:54:59,724 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 498.0) internal successors, (4980), 10 states have internal predecessors, (4980), 0 states have call successors, (0), 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 21:54:59,724 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 496 flow. Second operand 9 states and 2006 transitions. [2023-11-06 21:54:59,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 830 flow [2023-11-06 21:54:59,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 149 transitions, 793 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-06 21:54:59,733 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 473 flow [2023-11-06 21:54:59,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=473, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2023-11-06 21:54:59,734 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 36 predicate places. [2023-11-06 21:54:59,734 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 473 flow [2023-11-06 21:54:59,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 210.4) internal successors, (2104), 10 states have internal predecessors, (2104), 0 states have call successors, (0), 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 21:54:59,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:59,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:59,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:54:59,736 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 21:54:59,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash -14571340, now seen corresponding path program 2 times [2023-11-06 21:54:59,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:59,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456916126] [2023-11-06 21:54:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:59,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:00,574 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 21:55:00,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:00,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456916126] [2023-11-06 21:55:00,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456916126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:00,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:00,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:55:00,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052561513] [2023-11-06 21:55:00,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:00,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:55:00,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:00,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:55:00,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:55:02,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 498 [2023-11-06 21:55:02,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 473 flow. Second operand has 10 states, 10 states have (on average 210.4) internal successors, (2104), 10 states have internal predecessors, (2104), 0 states have call successors, (0), 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 21:55:02,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:02,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 498 [2023-11-06 21:55:02,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:03,757 INFO L124 PetriNetUnfolderBase]: 1927/3322 cut-off events. [2023-11-06 21:55:03,758 INFO L125 PetriNetUnfolderBase]: For 982/982 co-relation queries the response was YES. [2023-11-06 21:55:03,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 3322 events. 1927/3322 cut-off events. For 982/982 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 14798 event pairs, 596 based on Foata normal form. 0/2995 useless extension candidates. Maximal degree in co-relation 7965. Up to 1983 conditions per place. [2023-11-06 21:55:03,781 INFO L140 encePairwiseOnDemand]: 485/498 looper letters, 113 selfloop transitions, 30 changer transitions 10/160 dead transitions. [2023-11-06 21:55:03,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 160 transitions, 948 flow [2023-11-06 21:55:03,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:55:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 21:55:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2221 transitions. [2023-11-06 21:55:03,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459839357429719 [2023-11-06 21:55:03,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2221 transitions. [2023-11-06 21:55:03,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2221 transitions. [2023-11-06 21:55:03,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:03,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2221 transitions. [2023-11-06 21:55:03,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 222.1) internal successors, (2221), 10 states have internal predecessors, (2221), 0 states have call successors, (0), 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 21:55:03,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 498.0) internal successors, (5478), 11 states have internal predecessors, (5478), 0 states have call successors, (0), 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 21:55:03,810 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 498.0) internal successors, (5478), 11 states have internal predecessors, (5478), 0 states have call successors, (0), 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 21:55:03,810 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 473 flow. Second operand 10 states and 2221 transitions. [2023-11-06 21:55:03,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 160 transitions, 948 flow [2023-11-06 21:55:03,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 160 transitions, 903 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-06 21:55:03,862 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 558 flow [2023-11-06 21:55:03,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=558, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2023-11-06 21:55:03,863 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 43 predicate places. [2023-11-06 21:55:03,863 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 558 flow [2023-11-06 21:55:03,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 210.4) internal successors, (2104), 10 states have internal predecessors, (2104), 0 states have call successors, (0), 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 21:55:03,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:03,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:03,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:55:03,864 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 21:55:03,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -17252530, now seen corresponding path program 3 times [2023-11-06 21:55:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:03,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395110734] [2023-11-06 21:55:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:03,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:04,559 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 21:55:04,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395110734] [2023-11-06 21:55:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395110734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:04,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:04,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:55:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140164306] [2023-11-06 21:55:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:04,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:55:04,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:04,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:55:04,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:55:05,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 498 [2023-11-06 21:55:05,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 210.4) internal successors, (2104), 10 states have internal predecessors, (2104), 0 states have call successors, (0), 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 21:55:05,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:05,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 498 [2023-11-06 21:55:05,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:06,979 INFO L124 PetriNetUnfolderBase]: 1943/3339 cut-off events. [2023-11-06 21:55:06,979 INFO L125 PetriNetUnfolderBase]: For 1268/1268 co-relation queries the response was YES. [2023-11-06 21:55:06,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8285 conditions, 3339 events. 1943/3339 cut-off events. For 1268/1268 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 14870 event pairs, 566 based on Foata normal form. 0/3010 useless extension candidates. Maximal degree in co-relation 8259. Up to 1983 conditions per place. [2023-11-06 21:55:06,998 INFO L140 encePairwiseOnDemand]: 485/498 looper letters, 106 selfloop transitions, 33 changer transitions 8/154 dead transitions. [2023-11-06 21:55:06,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 154 transitions, 987 flow [2023-11-06 21:55:06,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:55:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 21:55:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2002 transitions. [2023-11-06 21:55:07,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466755912539045 [2023-11-06 21:55:07,007 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2002 transitions. [2023-11-06 21:55:07,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2002 transitions. [2023-11-06 21:55:07,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:07,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2002 transitions. [2023-11-06 21:55:07,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.44444444444446) internal successors, (2002), 9 states have internal predecessors, (2002), 0 states have call successors, (0), 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 21:55:07,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 498.0) internal successors, (4980), 10 states have internal predecessors, (4980), 0 states have call successors, (0), 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 21:55:07,024 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 498.0) internal successors, (4980), 10 states have internal predecessors, (4980), 0 states have call successors, (0), 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 21:55:07,025 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 558 flow. Second operand 9 states and 2002 transitions. [2023-11-06 21:55:07,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 154 transitions, 987 flow [2023-11-06 21:55:07,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 951 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-06 21:55:07,038 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 605 flow [2023-11-06 21:55:07,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=605, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2023-11-06 21:55:07,040 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 46 predicate places. [2023-11-06 21:55:07,041 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 605 flow [2023-11-06 21:55:07,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 210.4) internal successors, (2104), 10 states have internal predecessors, (2104), 0 states have call successors, (0), 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 21:55:07,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:07,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:07,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:55:07,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 21:55:07,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:07,043 INFO L85 PathProgramCache]: Analyzing trace with hash -18838180, now seen corresponding path program 4 times [2023-11-06 21:55:07,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:07,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909314224] [2023-11-06 21:55:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:07,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:07,696 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 21:55:07,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:07,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909314224] [2023-11-06 21:55:07,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909314224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:07,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:07,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:55:07,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637160694] [2023-11-06 21:55:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:07,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:55:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:55:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:55:08,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 498 [2023-11-06 21:55:08,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 605 flow. Second operand has 10 states, 10 states have (on average 211.4) internal successors, (2114), 10 states have internal predecessors, (2114), 0 states have call successors, (0), 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 21:55:08,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:08,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 498 [2023-11-06 21:55:08,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:09,656 INFO L124 PetriNetUnfolderBase]: 1927/3309 cut-off events. [2023-11-06 21:55:09,656 INFO L125 PetriNetUnfolderBase]: For 1414/1414 co-relation queries the response was YES. [2023-11-06 21:55:09,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8332 conditions, 3309 events. 1927/3309 cut-off events. For 1414/1414 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 14687 event pairs, 572 based on Foata normal form. 11/3004 useless extension candidates. Maximal degree in co-relation 8305. Up to 1983 conditions per place. [2023-11-06 21:55:09,676 INFO L140 encePairwiseOnDemand]: 486/498 looper letters, 104 selfloop transitions, 32 changer transitions 10/152 dead transitions. [2023-11-06 21:55:09,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 152 transitions, 1018 flow [2023-11-06 21:55:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:55:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 21:55:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2009 transitions. [2023-11-06 21:55:09,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44823739402052654 [2023-11-06 21:55:09,684 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2009 transitions. [2023-11-06 21:55:09,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2009 transitions. [2023-11-06 21:55:09,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:09,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2009 transitions. [2023-11-06 21:55:09,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 223.22222222222223) internal successors, (2009), 9 states have internal predecessors, (2009), 0 states have call successors, (0), 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 21:55:09,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 498.0) internal successors, (4980), 10 states have internal predecessors, (4980), 0 states have call successors, (0), 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 21:55:09,701 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 498.0) internal successors, (4980), 10 states have internal predecessors, (4980), 0 states have call successors, (0), 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 21:55:09,701 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 605 flow. Second operand 9 states and 2009 transitions. [2023-11-06 21:55:09,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 152 transitions, 1018 flow [2023-11-06 21:55:09,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 152 transitions, 960 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-06 21:55:09,714 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 603 flow [2023-11-06 21:55:09,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=603, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2023-11-06 21:55:09,715 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-11-06 21:55:09,715 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 603 flow [2023-11-06 21:55:09,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.4) internal successors, (2114), 10 states have internal predecessors, (2114), 0 states have call successors, (0), 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 21:55:09,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:09,717 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 21:55:09,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:55:09,717 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 21:55:09,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash -55131961, now seen corresponding path program 1 times [2023-11-06 21:55:09,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:09,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838423044] [2023-11-06 21:55:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:09,807 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 21:55:09,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:09,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838423044] [2023-11-06 21:55:09,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838423044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:09,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:09,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316557802] [2023-11-06 21:55:09,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:09,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:09,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:09,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 498 [2023-11-06 21:55:09,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 603 flow. Second operand has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 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 21:55:09,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:09,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 498 [2023-11-06 21:55:09,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:10,222 INFO L124 PetriNetUnfolderBase]: 1049/1923 cut-off events. [2023-11-06 21:55:10,223 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2023-11-06 21:55:10,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5085 conditions, 1923 events. 1049/1923 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8132 event pairs, 237 based on Foata normal form. 4/1815 useless extension candidates. Maximal degree in co-relation 5058. Up to 1485 conditions per place. [2023-11-06 21:55:10,236 INFO L140 encePairwiseOnDemand]: 492/498 looper letters, 85 selfloop transitions, 10 changer transitions 1/104 dead transitions. [2023-11-06 21:55:10,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 821 flow [2023-11-06 21:55:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:55:10,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2023-11-06 21:55:10,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448460508701473 [2023-11-06 21:55:10,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2023-11-06 21:55:10,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2023-11-06 21:55:10,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:10,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2023-11-06 21:55:10,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 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 21:55:10,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 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 21:55:10,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 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 21:55:10,249 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 603 flow. Second operand 3 states and 814 transitions. [2023-11-06 21:55:10,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 821 flow [2023-11-06 21:55:10,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 104 transitions, 753 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-06 21:55:10,259 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 543 flow [2023-11-06 21:55:10,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=543, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2023-11-06 21:55:10,262 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 39 predicate places. [2023-11-06 21:55:10,262 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 543 flow [2023-11-06 21:55:10,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 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 21:55:10,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:10,263 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 21:55:10,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:55:10,263 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 21:55:10,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:10,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1952743814, now seen corresponding path program 1 times [2023-11-06 21:55:10,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:10,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864754476] [2023-11-06 21:55:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:10,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:11,440 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 21:55:11,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864754476] [2023-11-06 21:55:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864754476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:11,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:11,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 21:55:11,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231254018] [2023-11-06 21:55:11,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:11,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:55:11,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:11,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:55:11,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:55:13,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 498 [2023-11-06 21:55:13,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 543 flow. Second operand has 15 states, 15 states have (on average 206.4) internal successors, (3096), 15 states have internal predecessors, (3096), 0 states have call successors, (0), 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 21:55:13,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:13,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 498 [2023-11-06 21:55:13,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:15,288 INFO L124 PetriNetUnfolderBase]: 1204/2236 cut-off events. [2023-11-06 21:55:15,288 INFO L125 PetriNetUnfolderBase]: For 1081/1081 co-relation queries the response was YES. [2023-11-06 21:55:15,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5871 conditions, 2236 events. 1204/2236 cut-off events. For 1081/1081 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10139 event pairs, 634 based on Foata normal form. 17/2201 useless extension candidates. Maximal degree in co-relation 5844. Up to 1526 conditions per place. [2023-11-06 21:55:15,298 INFO L140 encePairwiseOnDemand]: 478/498 looper letters, 138 selfloop transitions, 45 changer transitions 18/207 dead transitions. [2023-11-06 21:55:15,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 207 transitions, 1326 flow [2023-11-06 21:55:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 21:55:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 21:55:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3849 transitions. [2023-11-06 21:55:15,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42938420348058903 [2023-11-06 21:55:15,316 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3849 transitions. [2023-11-06 21:55:15,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3849 transitions. [2023-11-06 21:55:15,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:15,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3849 transitions. [2023-11-06 21:55:15,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.83333333333334) internal successors, (3849), 18 states have internal predecessors, (3849), 0 states have call successors, (0), 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 21:55:15,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 498.0) internal successors, (9462), 19 states have internal predecessors, (9462), 0 states have call successors, (0), 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 21:55:15,347 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 498.0) internal successors, (9462), 19 states have internal predecessors, (9462), 0 states have call successors, (0), 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 21:55:15,347 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 543 flow. Second operand 18 states and 3849 transitions. [2023-11-06 21:55:15,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 207 transitions, 1326 flow [2023-11-06 21:55:15,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 207 transitions, 1312 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:55:15,360 INFO L231 Difference]: Finished difference. Result has 130 places, 116 transitions, 879 flow [2023-11-06 21:55:15,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=879, PETRI_PLACES=130, PETRI_TRANSITIONS=116} [2023-11-06 21:55:15,361 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 67 predicate places. [2023-11-06 21:55:15,361 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 116 transitions, 879 flow [2023-11-06 21:55:15,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 206.4) internal successors, (3096), 15 states have internal predecessors, (3096), 0 states have call successors, (0), 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 21:55:15,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:15,362 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 21:55:15,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:55:15,363 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 21:55:15,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:15,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1859346688, now seen corresponding path program 2 times [2023-11-06 21:55:15,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:15,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575090219] [2023-11-06 21:55:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:15,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,451 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 21:55:16,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:16,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575090219] [2023-11-06 21:55:16,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575090219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:16,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:16,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 21:55:16,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032376669] [2023-11-06 21:55:16,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:16,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:55:16,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:16,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:55:16,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:55:18,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 498 [2023-11-06 21:55:18,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 116 transitions, 879 flow. Second operand has 15 states, 15 states have (on average 206.4) internal successors, (3096), 15 states have internal predecessors, (3096), 0 states have call successors, (0), 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 21:55:18,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:18,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 498 [2023-11-06 21:55:18,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:19,289 INFO L124 PetriNetUnfolderBase]: 1259/2336 cut-off events. [2023-11-06 21:55:19,289 INFO L125 PetriNetUnfolderBase]: For 1794/1794 co-relation queries the response was YES. [2023-11-06 21:55:19,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6691 conditions, 2336 events. 1259/2336 cut-off events. For 1794/1794 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10692 event pairs, 536 based on Foata normal form. 9/2337 useless extension candidates. Maximal degree in co-relation 6651. Up to 1204 conditions per place. [2023-11-06 21:55:19,302 INFO L140 encePairwiseOnDemand]: 478/498 looper letters, 123 selfloop transitions, 57 changer transitions 16/202 dead transitions. [2023-11-06 21:55:19,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 202 transitions, 1487 flow [2023-11-06 21:55:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:55:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 21:55:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3423 transitions. [2023-11-06 21:55:19,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295933734939759 [2023-11-06 21:55:19,312 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3423 transitions. [2023-11-06 21:55:19,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3423 transitions. [2023-11-06 21:55:19,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:19,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3423 transitions. [2023-11-06 21:55:19,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 213.9375) internal successors, (3423), 16 states have internal predecessors, (3423), 0 states have call successors, (0), 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 21:55:19,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 498.0) internal successors, (8466), 17 states have internal predecessors, (8466), 0 states have call successors, (0), 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 21:55:19,338 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 498.0) internal successors, (8466), 17 states have internal predecessors, (8466), 0 states have call successors, (0), 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 21:55:19,339 INFO L175 Difference]: Start difference. First operand has 130 places, 116 transitions, 879 flow. Second operand 16 states and 3423 transitions. [2023-11-06 21:55:19,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 202 transitions, 1487 flow [2023-11-06 21:55:19,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 202 transitions, 1426 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-06 21:55:19,361 INFO L231 Difference]: Finished difference. Result has 146 places, 122 transitions, 1011 flow [2023-11-06 21:55:19,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1011, PETRI_PLACES=146, PETRI_TRANSITIONS=122} [2023-11-06 21:55:19,362 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 83 predicate places. [2023-11-06 21:55:19,362 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 122 transitions, 1011 flow [2023-11-06 21:55:19,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 206.4) internal successors, (3096), 15 states have internal predecessors, (3096), 0 states have call successors, (0), 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 21:55:19,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:19,364 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 21:55:19,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:55:19,364 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 21:55:19,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:19,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1385041794, now seen corresponding path program 3 times [2023-11-06 21:55:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:19,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876648759] [2023-11-06 21:55:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:19,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:20,592 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 21:55:20,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:20,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876648759] [2023-11-06 21:55:20,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876648759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:20,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:20,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 21:55:20,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836380568] [2023-11-06 21:55:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:20,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:55:20,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:20,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:55:20,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:55:22,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 498 [2023-11-06 21:55:22,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 122 transitions, 1011 flow. Second operand has 15 states, 15 states have (on average 202.4) internal successors, (3036), 15 states have internal predecessors, (3036), 0 states have call successors, (0), 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 21:55:22,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:22,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 498 [2023-11-06 21:55:22,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:23,361 INFO L124 PetriNetUnfolderBase]: 1334/2474 cut-off events. [2023-11-06 21:55:23,361 INFO L125 PetriNetUnfolderBase]: For 2440/2440 co-relation queries the response was YES. [2023-11-06 21:55:23,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7597 conditions, 2474 events. 1334/2474 cut-off events. For 2440/2440 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11482 event pairs, 242 based on Foata normal form. 9/2475 useless extension candidates. Maximal degree in co-relation 7552. Up to 919 conditions per place. [2023-11-06 21:55:23,376 INFO L140 encePairwiseOnDemand]: 478/498 looper letters, 118 selfloop transitions, 70 changer transitions 16/210 dead transitions. [2023-11-06 21:55:23,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 210 transitions, 1659 flow [2023-11-06 21:55:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:55:23,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 21:55:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3358 transitions. [2023-11-06 21:55:23,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214357429718876 [2023-11-06 21:55:23,392 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3358 transitions. [2023-11-06 21:55:23,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3358 transitions. [2023-11-06 21:55:23,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:23,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3358 transitions. [2023-11-06 21:55:23,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 209.875) internal successors, (3358), 16 states have internal predecessors, (3358), 0 states have call successors, (0), 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 21:55:23,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 498.0) internal successors, (8466), 17 states have internal predecessors, (8466), 0 states have call successors, (0), 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 21:55:23,426 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 498.0) internal successors, (8466), 17 states have internal predecessors, (8466), 0 states have call successors, (0), 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 21:55:23,426 INFO L175 Difference]: Start difference. First operand has 146 places, 122 transitions, 1011 flow. Second operand 16 states and 3358 transitions. [2023-11-06 21:55:23,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 210 transitions, 1659 flow [2023-11-06 21:55:23,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 210 transitions, 1548 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-11-06 21:55:23,460 INFO L231 Difference]: Finished difference. Result has 156 places, 129 transitions, 1156 flow [2023-11-06 21:55:23,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1156, PETRI_PLACES=156, PETRI_TRANSITIONS=129} [2023-11-06 21:55:23,462 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 93 predicate places. [2023-11-06 21:55:23,463 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 129 transitions, 1156 flow [2023-11-06 21:55:23,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 202.4) internal successors, (3036), 15 states have internal predecessors, (3036), 0 states have call successors, (0), 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 21:55:23,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:23,464 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 21:55:23,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:55:23,465 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 21:55:23,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:23,466 INFO L85 PathProgramCache]: Analyzing trace with hash -140509398, now seen corresponding path program 4 times [2023-11-06 21:55:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888226676] [2023-11-06 21:55:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:23,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat