./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --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_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/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_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/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_2c73e0fa-eb0a-4a34-992b-8e5db5503980/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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:09:11,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:09:11,164 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:09:11,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:09:11,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:09:11,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:09:11,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:09:11,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:09:11,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:09:11,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:09:11,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:09:11,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:09:11,236 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:09:11,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:09:11,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:09:11,240 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:09:11,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:09:11,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:09:11,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:09:11,242 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:09:11,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:09:11,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:09:11,243 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:09:11,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:09:11,246 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:09:11,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:09:11,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:09:11,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:09:11,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:11,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:09:11,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:09:11,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:09:11,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:09:11,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:09:11,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:09:11,252 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:09:11,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:09:11,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:09:11,252 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:09:11,253 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_2c73e0fa-eb0a-4a34-992b-8e5db5503980/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2023-11-06 23:09:11,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:09:11,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:09:11,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:09:11,593 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:09:11,593 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:09:11,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-06 23:09:14,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:09:15,009 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:09:15,009 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-06 23:09:15,020 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/data/8ef92c29f/6a0342dda74341929259c64521b0bab7/FLAG671cf7c59 [2023-11-06 23:09:15,046 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/data/8ef92c29f/6a0342dda74341929259c64521b0bab7 [2023-11-06 23:09:15,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:09:15,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:09:15,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:15,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:09:15,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:09:15,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e855e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15, skipping insertion in model container [2023-11-06 23:09:15,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,132 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:09:15,376 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_2c73e0fa-eb0a-4a34-992b-8e5db5503980/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2023-11-06 23:09:15,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:15,396 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:09:15,436 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_2c73e0fa-eb0a-4a34-992b-8e5db5503980/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2023-11-06 23:09:15,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:15,447 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:09:15,448 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:09:15,457 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:09:15,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15 WrapperNode [2023-11-06 23:09:15,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:15,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:15,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:09:15,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:09:15,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,510 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 264 [2023-11-06 23:09:15,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:15,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:09:15,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:09:15,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:09:15,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:09:15,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:09:15,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:09:15,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:09:15,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (1/1) ... [2023-11-06 23:09:15,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:15,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:15,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:09:15,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c73e0fa-eb0a-4a34-992b-8e5db5503980/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:09:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:09:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:09:15,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:09:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:09:15,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:09:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:09:15,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:09:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:09:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:09:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:09:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:09:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:09:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:09:15,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:09:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:09:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:09:15,677 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 23:09:15,847 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:09:15,850 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:09:16,313 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:09:16,600 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:09:16,601 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:09:16,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:16 BoogieIcfgContainer [2023-11-06 23:09:16,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:09:16,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:09:16,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:09:16,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:09:16,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:09:15" (1/3) ... [2023-11-06 23:09:16,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73772993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:16, skipping insertion in model container [2023-11-06 23:09:16,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:15" (2/3) ... [2023-11-06 23:09:16,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73772993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:16, skipping insertion in model container [2023-11-06 23:09:16,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:16" (3/3) ... [2023-11-06 23:09:16,628 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-06 23:09:16,640 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:09:16,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:09:16,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:09:16,655 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:09:16,747 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:09:16,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 158 transitions, 337 flow [2023-11-06 23:09:16,889 INFO L124 PetriNetUnfolderBase]: 2/155 cut-off events. [2023-11-06 23:09:16,889 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:09:16,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 155 events. 2/155 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-11-06 23:09:16,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 158 transitions, 337 flow [2023-11-06 23:09:16,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 144 transitions, 306 flow [2023-11-06 23:09:16,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:09:16,924 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 144 transitions, 306 flow [2023-11-06 23:09:16,928 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 144 transitions, 306 flow [2023-11-06 23:09:16,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 144 transitions, 306 flow [2023-11-06 23:09:17,034 INFO L124 PetriNetUnfolderBase]: 2/144 cut-off events. [2023-11-06 23:09:17,034 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:09:17,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 144 events. 2/144 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-11-06 23:09:17,043 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-11-06 23:09:21,707 INFO L134 LiptonReduction]: Checked pairs total: 20794 [2023-11-06 23:09:21,708 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-11-06 23:09:21,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:09:21,733 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;@1dfdc4d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:09:21,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 23:09:21,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:09:21,746 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-11-06 23:09:21,746 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:09:21,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:21,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:21,748 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 1 more)] === [2023-11-06 23:09:21,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1511126853, now seen corresponding path program 1 times [2023-11-06 23:09:21,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:21,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522508827] [2023-11-06 23:09:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:21,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:22,769 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 23:09:22,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:22,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522508827] [2023-11-06 23:09:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522508827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:22,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:22,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:09:22,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368378592] [2023-11-06 23:09:22,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:22,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:09:22,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:22,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:09:22,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:22,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 263 [2023-11-06 23:09:23,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 116 flow. Second operand has 9 states, 9 states have (on average 124.11111111111111) internal successors, (1117), 9 states have internal predecessors, (1117), 0 states have call successors, (0), 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 23:09:23,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:23,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 263 [2023-11-06 23:09:23,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:24,601 INFO L124 PetriNetUnfolderBase]: 4666/7168 cut-off events. [2023-11-06 23:09:24,601 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2023-11-06 23:09:24,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 7168 events. 4666/7168 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 41433 event pairs, 1653 based on Foata normal form. 1/7101 useless extension candidates. Maximal degree in co-relation 12818. Up to 2475 conditions per place. [2023-11-06 23:09:24,672 INFO L140 encePairwiseOnDemand]: 255/263 looper letters, 147 selfloop transitions, 15 changer transitions 19/193 dead transitions. [2023-11-06 23:09:24,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 820 flow [2023-11-06 23:09:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:09:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:09:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1502 transitions. [2023-11-06 23:09:24,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191842378154166 [2023-11-06 23:09:24,700 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1502 transitions. [2023-11-06 23:09:24,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1502 transitions. [2023-11-06 23:09:24,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:24,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1502 transitions. [2023-11-06 23:09:24,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 136.54545454545453) internal successors, (1502), 11 states have internal predecessors, (1502), 0 states have call successors, (0), 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 23:09:24,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 263.0) internal successors, (3156), 12 states have internal predecessors, (3156), 0 states have call successors, (0), 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 23:09:24,735 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 263.0) internal successors, (3156), 12 states have internal predecessors, (3156), 0 states have call successors, (0), 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 23:09:24,737 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 116 flow. Second operand 11 states and 1502 transitions. [2023-11-06 23:09:24,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 820 flow [2023-11-06 23:09:24,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 193 transitions, 772 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 23:09:24,757 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 196 flow [2023-11-06 23:09:24,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=196, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-11-06 23:09:24,765 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-11-06 23:09:24,765 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 196 flow [2023-11-06 23:09:24,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.11111111111111) internal successors, (1117), 9 states have internal predecessors, (1117), 0 states have call successors, (0), 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 23:09:24,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:24,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:24,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:09:24,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:24,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash -835854091, now seen corresponding path program 2 times [2023-11-06 23:09:24,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:24,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59587950] [2023-11-06 23:09:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:24,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,698 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 23:09:25,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59587950] [2023-11-06 23:09:25,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59587950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:25,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:25,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:09:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566534425] [2023-11-06 23:09:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:25,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:09:25,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:25,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:09:25,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:25,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-11-06 23:09:25,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 196 flow. Second operand has 9 states, 9 states have (on average 125.0) internal successors, (1125), 9 states have internal predecessors, (1125), 0 states have call successors, (0), 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 23:09:25,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:25,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-11-06 23:09:25,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:27,507 INFO L124 PetriNetUnfolderBase]: 6053/10662 cut-off events. [2023-11-06 23:09:27,508 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-06 23:09:27,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21567 conditions, 10662 events. 6053/10662 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 77863 event pairs, 1077 based on Foata normal form. 200/10665 useless extension candidates. Maximal degree in co-relation 21530. Up to 5762 conditions per place. [2023-11-06 23:09:27,610 INFO L140 encePairwiseOnDemand]: 251/263 looper letters, 118 selfloop transitions, 36 changer transitions 0/184 dead transitions. [2023-11-06 23:09:27,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 184 transitions, 754 flow [2023-11-06 23:09:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:09:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 23:09:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1368 transitions. [2023-11-06 23:09:27,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201520912547528 [2023-11-06 23:09:27,618 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1368 transitions. [2023-11-06 23:09:27,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1368 transitions. [2023-11-06 23:09:27,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:27,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1368 transitions. [2023-11-06 23:09:27,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.8) internal successors, (1368), 10 states have internal predecessors, (1368), 0 states have call successors, (0), 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 23:09:27,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 263.0) internal successors, (2893), 11 states have internal predecessors, (2893), 0 states have call successors, (0), 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 23:09:27,639 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 263.0) internal successors, (2893), 11 states have internal predecessors, (2893), 0 states have call successors, (0), 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 23:09:27,641 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 196 flow. Second operand 10 states and 1368 transitions. [2023-11-06 23:09:27,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 184 transitions, 754 flow [2023-11-06 23:09:27,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 184 transitions, 750 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:27,661 INFO L231 Difference]: Finished difference. Result has 81 places, 103 transitions, 439 flow [2023-11-06 23:09:27,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=439, PETRI_PLACES=81, PETRI_TRANSITIONS=103} [2023-11-06 23:09:27,669 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 22 predicate places. [2023-11-06 23:09:27,670 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 439 flow [2023-11-06 23:09:27,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.0) internal successors, (1125), 9 states have internal predecessors, (1125), 0 states have call successors, (0), 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 23:09:27,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:27,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:27,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:09:27,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:27,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1294092809, now seen corresponding path program 3 times [2023-11-06 23:09:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728867438] [2023-11-06 23:09:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:27,809 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 23:09:27,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:27,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728867438] [2023-11-06 23:09:27,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728867438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:27,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:27,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:27,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950271590] [2023-11-06 23:09:27,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:27,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:27,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:27,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:27,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:27,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 263 [2023-11-06 23:09:27,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 103 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 23:09:27,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:27,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 263 [2023-11-06 23:09:27,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:29,213 INFO L124 PetriNetUnfolderBase]: 5102/9451 cut-off events. [2023-11-06 23:09:29,213 INFO L125 PetriNetUnfolderBase]: For 5397/5855 co-relation queries the response was YES. [2023-11-06 23:09:29,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23946 conditions, 9451 events. 5102/9451 cut-off events. For 5397/5855 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 71435 event pairs, 3133 based on Foata normal form. 205/9306 useless extension candidates. Maximal degree in co-relation 15951. Up to 6300 conditions per place. [2023-11-06 23:09:29,310 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 82 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2023-11-06 23:09:29,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 127 transitions, 694 flow [2023-11-06 23:09:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-06 23:09:29,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576679340937896 [2023-11-06 23:09:29,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-06 23:09:29,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-06 23:09:29,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:29,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-06 23:09:29,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 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 23:09:29,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 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 23:09:29,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 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 23:09:29,320 INFO L175 Difference]: Start difference. First operand has 81 places, 103 transitions, 439 flow. Second operand 3 states and 440 transitions. [2023-11-06 23:09:29,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 127 transitions, 694 flow [2023-11-06 23:09:29,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 694 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:09:29,386 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 438 flow [2023-11-06 23:09:29,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2023-11-06 23:09:29,388 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 25 predicate places. [2023-11-06 23:09:29,388 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 438 flow [2023-11-06 23:09:29,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 23:09:29,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:29,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:29,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:09:29,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:29,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1042046831, now seen corresponding path program 4 times [2023-11-06 23:09:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944398947] [2023-11-06 23:09:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:29,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:29,775 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 23:09:29,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:29,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944398947] [2023-11-06 23:09:29,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944398947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:29,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:29,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:09:29,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969393646] [2023-11-06 23:09:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:09:29,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:29,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:09:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:29,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 263 [2023-11-06 23:09:29,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 438 flow. Second operand has 9 states, 9 states have (on average 124.11111111111111) internal successors, (1117), 9 states have internal predecessors, (1117), 0 states have call successors, (0), 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 23:09:29,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:29,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 263 [2023-11-06 23:09:29,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:33,031 INFO L124 PetriNetUnfolderBase]: 11017/17629 cut-off events. [2023-11-06 23:09:33,031 INFO L125 PetriNetUnfolderBase]: For 10004/10291 co-relation queries the response was YES. [2023-11-06 23:09:33,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48990 conditions, 17629 events. 11017/17629 cut-off events. For 10004/10291 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 118864 event pairs, 3388 based on Foata normal form. 188/17594 useless extension candidates. Maximal degree in co-relation 31869. Up to 4765 conditions per place. [2023-11-06 23:09:33,298 INFO L140 encePairwiseOnDemand]: 255/263 looper letters, 260 selfloop transitions, 29 changer transitions 35/347 dead transitions. [2023-11-06 23:09:33,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 347 transitions, 2050 flow [2023-11-06 23:09:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:09:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:09:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1518 transitions. [2023-11-06 23:09:33,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247148288973384 [2023-11-06 23:09:33,308 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1518 transitions. [2023-11-06 23:09:33,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1518 transitions. [2023-11-06 23:09:33,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:33,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1518 transitions. [2023-11-06 23:09:33,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 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 23:09:33,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 263.0) internal successors, (3156), 12 states have internal predecessors, (3156), 0 states have call successors, (0), 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 23:09:33,326 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 263.0) internal successors, (3156), 12 states have internal predecessors, (3156), 0 states have call successors, (0), 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 23:09:33,327 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 438 flow. Second operand 11 states and 1518 transitions. [2023-11-06 23:09:33,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 347 transitions, 2050 flow [2023-11-06 23:09:33,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 347 transitions, 2046 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:09:33,400 INFO L231 Difference]: Finished difference. Result has 98 places, 126 transitions, 679 flow [2023-11-06 23:09:33,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=679, PETRI_PLACES=98, PETRI_TRANSITIONS=126} [2023-11-06 23:09:33,401 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 39 predicate places. [2023-11-06 23:09:33,402 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 126 transitions, 679 flow [2023-11-06 23:09:33,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.11111111111111) internal successors, (1117), 9 states have internal predecessors, (1117), 0 states have call successors, (0), 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 23:09:33,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:33,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:33,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:09:33,404 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:33,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:33,405 INFO L85 PathProgramCache]: Analyzing trace with hash 355267597, now seen corresponding path program 5 times [2023-11-06 23:09:33,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:33,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257013203] [2023-11-06 23:09:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:33,558 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 23:09:33,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:33,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257013203] [2023-11-06 23:09:33,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257013203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:33,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:33,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:33,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520528512] [2023-11-06 23:09:33,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:33,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:33,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:33,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:33,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:33,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 263 [2023-11-06 23:09:33,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 126 transitions, 679 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 23:09:33,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:33,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 263 [2023-11-06 23:09:33,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:35,464 INFO L124 PetriNetUnfolderBase]: 6062/11428 cut-off events. [2023-11-06 23:09:35,464 INFO L125 PetriNetUnfolderBase]: For 9065/9928 co-relation queries the response was YES. [2023-11-06 23:09:35,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31955 conditions, 11428 events. 6062/11428 cut-off events. For 9065/9928 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 90711 event pairs, 3652 based on Foata normal form. 247/11075 useless extension candidates. Maximal degree in co-relation 31836. Up to 7403 conditions per place. [2023-11-06 23:09:35,584 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 86 selfloop transitions, 2 changer transitions 0/156 dead transitions. [2023-11-06 23:09:35,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 990 flow [2023-11-06 23:09:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-06 23:09:35,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576679340937896 [2023-11-06 23:09:35,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-06 23:09:35,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-06 23:09:35,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:35,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-06 23:09:35,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 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 23:09:35,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 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 23:09:35,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 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 23:09:35,594 INFO L175 Difference]: Start difference. First operand has 98 places, 126 transitions, 679 flow. Second operand 3 states and 440 transitions. [2023-11-06 23:09:35,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 990 flow [2023-11-06 23:09:35,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 156 transitions, 984 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:35,753 INFO L231 Difference]: Finished difference. Result has 98 places, 126 transitions, 683 flow [2023-11-06 23:09:35,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=683, PETRI_PLACES=98, PETRI_TRANSITIONS=126} [2023-11-06 23:09:35,754 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 39 predicate places. [2023-11-06 23:09:35,755 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 126 transitions, 683 flow [2023-11-06 23:09:35,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 23:09:35,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:35,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:35,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:09:35,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:35,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2027826825, now seen corresponding path program 6 times [2023-11-06 23:09:35,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:35,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421896746] [2023-11-06 23:09:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:35,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:36,129 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 23:09:36,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421896746] [2023-11-06 23:09:36,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421896746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:36,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:09:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200853133] [2023-11-06 23:09:36,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:36,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:09:36,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:09:36,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:36,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 263 [2023-11-06 23:09:36,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 126 transitions, 683 flow. Second operand has 9 states, 9 states have (on average 124.11111111111111) internal successors, (1117), 9 states have internal predecessors, (1117), 0 states have call successors, (0), 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 23:09:36,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:36,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 263 [2023-11-06 23:09:36,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:39,310 INFO L124 PetriNetUnfolderBase]: 10525/17119 cut-off events. [2023-11-06 23:09:39,310 INFO L125 PetriNetUnfolderBase]: For 14629/14838 co-relation queries the response was YES. [2023-11-06 23:09:39,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52115 conditions, 17119 events. 10525/17119 cut-off events. For 14629/14838 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 116117 event pairs, 3295 based on Foata normal form. 104/16937 useless extension candidates. Maximal degree in co-relation 49189. Up to 4607 conditions per place. [2023-11-06 23:09:39,455 INFO L140 encePairwiseOnDemand]: 255/263 looper letters, 244 selfloop transitions, 32 changer transitions 32/331 dead transitions. [2023-11-06 23:09:39,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 331 transitions, 2127 flow [2023-11-06 23:09:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:09:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:09:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1514 transitions. [2023-11-06 23:09:39,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523332181126858 [2023-11-06 23:09:39,462 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1514 transitions. [2023-11-06 23:09:39,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1514 transitions. [2023-11-06 23:09:39,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:39,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1514 transitions. [2023-11-06 23:09:39,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 137.63636363636363) internal successors, (1514), 11 states have internal predecessors, (1514), 0 states have call successors, (0), 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 23:09:39,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 263.0) internal successors, (3156), 12 states have internal predecessors, (3156), 0 states have call successors, (0), 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 23:09:39,477 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 263.0) internal successors, (3156), 12 states have internal predecessors, (3156), 0 states have call successors, (0), 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 23:09:39,477 INFO L175 Difference]: Start difference. First operand has 98 places, 126 transitions, 683 flow. Second operand 11 states and 1514 transitions. [2023-11-06 23:09:39,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 331 transitions, 2127 flow [2023-11-06 23:09:39,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 331 transitions, 2123 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:09:39,791 INFO L231 Difference]: Finished difference. Result has 110 places, 131 transitions, 814 flow [2023-11-06 23:09:39,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=814, PETRI_PLACES=110, PETRI_TRANSITIONS=131} [2023-11-06 23:09:39,793 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 51 predicate places. [2023-11-06 23:09:39,793 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 131 transitions, 814 flow [2023-11-06 23:09:39,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.11111111111111) internal successors, (1117), 9 states have internal predecessors, (1117), 0 states have call successors, (0), 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 23:09:39,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:39,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:39,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:09:39,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:39,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:39,795 INFO L85 PathProgramCache]: Analyzing trace with hash -698507043, now seen corresponding path program 7 times [2023-11-06 23:09:39,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:39,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180559745] [2023-11-06 23:09:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:39,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:40,397 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 23:09:40,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180559745] [2023-11-06 23:09:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180559745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:40,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:40,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852354320] [2023-11-06 23:09:40,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:40,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:09:40,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:40,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:09:40,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:40,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 263 [2023-11-06 23:09:40,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 814 flow. Second operand has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 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 23:09:40,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:40,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 263 [2023-11-06 23:09:40,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:41,653 INFO L124 PetriNetUnfolderBase]: 5345/10225 cut-off events. [2023-11-06 23:09:41,653 INFO L125 PetriNetUnfolderBase]: For 10774/11343 co-relation queries the response was YES. [2023-11-06 23:09:41,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30348 conditions, 10225 events. 5345/10225 cut-off events. For 10774/11343 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 79948 event pairs, 2637 based on Foata normal form. 42/9867 useless extension candidates. Maximal degree in co-relation 30266. Up to 8006 conditions per place. [2023-11-06 23:09:41,751 INFO L140 encePairwiseOnDemand]: 254/263 looper letters, 72 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2023-11-06 23:09:41,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 154 transitions, 1073 flow [2023-11-06 23:09:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:09:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 694 transitions. [2023-11-06 23:09:41,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277566539923955 [2023-11-06 23:09:41,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 694 transitions. [2023-11-06 23:09:41,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 694 transitions. [2023-11-06 23:09:41,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:41,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 694 transitions. [2023-11-06 23:09:41,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 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 23:09:41,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 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 23:09:41,764 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 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 23:09:41,765 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 814 flow. Second operand 5 states and 694 transitions. [2023-11-06 23:09:41,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 154 transitions, 1073 flow [2023-11-06 23:09:42,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 1036 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-11-06 23:09:42,007 INFO L231 Difference]: Finished difference. Result has 109 places, 129 transitions, 825 flow [2023-11-06 23:09:42,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=825, PETRI_PLACES=109, PETRI_TRANSITIONS=129} [2023-11-06 23:09:42,008 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 50 predicate places. [2023-11-06 23:09:42,009 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 129 transitions, 825 flow [2023-11-06 23:09:42,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 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 23:09:42,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:42,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:42,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:09:42,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:42,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:42,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1012086811, now seen corresponding path program 8 times [2023-11-06 23:09:42,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:42,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050305678] [2023-11-06 23:09:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:42,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:42,527 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 23:09:42,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050305678] [2023-11-06 23:09:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050305678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:42,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:42,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:09:42,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250117420] [2023-11-06 23:09:42,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:42,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:09:42,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:42,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:09:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:42,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 263 [2023-11-06 23:09:42,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 129 transitions, 825 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 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 23:09:42,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:42,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 263 [2023-11-06 23:09:42,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:44,440 INFO L124 PetriNetUnfolderBase]: 7906/14642 cut-off events. [2023-11-06 23:09:44,441 INFO L125 PetriNetUnfolderBase]: For 16440/17117 co-relation queries the response was YES. [2023-11-06 23:09:44,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42737 conditions, 14642 events. 7906/14642 cut-off events. For 16440/17117 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 115685 event pairs, 2686 based on Foata normal form. 154/14390 useless extension candidates. Maximal degree in co-relation 41827. Up to 9562 conditions per place. [2023-11-06 23:09:44,552 INFO L140 encePairwiseOnDemand]: 251/263 looper letters, 118 selfloop transitions, 27 changer transitions 0/204 dead transitions. [2023-11-06 23:09:44,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 204 transitions, 1385 flow [2023-11-06 23:09:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:09:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:09:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 956 transitions. [2023-11-06 23:09:44,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192829983704509 [2023-11-06 23:09:44,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 956 transitions. [2023-11-06 23:09:44,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 956 transitions. [2023-11-06 23:09:44,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:44,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 956 transitions. [2023-11-06 23:09:44,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 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 23:09:44,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 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 23:09:44,571 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 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 23:09:44,571 INFO L175 Difference]: Start difference. First operand has 109 places, 129 transitions, 825 flow. Second operand 7 states and 956 transitions. [2023-11-06 23:09:44,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 204 transitions, 1385 flow [2023-11-06 23:09:44,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 204 transitions, 1357 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:09:44,846 INFO L231 Difference]: Finished difference. Result has 116 places, 148 transitions, 981 flow [2023-11-06 23:09:44,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=981, PETRI_PLACES=116, PETRI_TRANSITIONS=148} [2023-11-06 23:09:44,847 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 57 predicate places. [2023-11-06 23:09:44,847 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 148 transitions, 981 flow [2023-11-06 23:09:44,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 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 23:09:44,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:44,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:44,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:09:44,849 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:44,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:44,850 INFO L85 PathProgramCache]: Analyzing trace with hash 353241757, now seen corresponding path program 9 times [2023-11-06 23:09:44,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:44,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549429495] [2023-11-06 23:09:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:44,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:45,385 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 23:09:45,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:45,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549429495] [2023-11-06 23:09:45,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549429495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:45,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:45,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:09:45,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978769918] [2023-11-06 23:09:45,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:45,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:09:45,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:45,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:09:45,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:45,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 263 [2023-11-06 23:09:45,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 148 transitions, 981 flow. Second operand has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 0 states have call successors, (0), 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 23:09:45,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:45,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 263 [2023-11-06 23:09:45,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:47,968 INFO L124 PetriNetUnfolderBase]: 9134/16764 cut-off events. [2023-11-06 23:09:47,969 INFO L125 PetriNetUnfolderBase]: For 27079/28244 co-relation queries the response was YES. [2023-11-06 23:09:48,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53853 conditions, 16764 events. 9134/16764 cut-off events. For 27079/28244 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 133727 event pairs, 3284 based on Foata normal form. 272/16624 useless extension candidates. Maximal degree in co-relation 52843. Up to 11218 conditions per place. [2023-11-06 23:09:48,131 INFO L140 encePairwiseOnDemand]: 251/263 looper letters, 135 selfloop transitions, 32 changer transitions 4/230 dead transitions. [2023-11-06 23:09:48,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 230 transitions, 1668 flow [2023-11-06 23:09:48,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:09:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 23:09:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1215 transitions. [2023-11-06 23:09:48,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133079847908745 [2023-11-06 23:09:48,139 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1215 transitions. [2023-11-06 23:09:48,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1215 transitions. [2023-11-06 23:09:48,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:48,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1215 transitions. [2023-11-06 23:09:48,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 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 23:09:48,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 263.0) internal successors, (2630), 10 states have internal predecessors, (2630), 0 states have call successors, (0), 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 23:09:48,157 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 263.0) internal successors, (2630), 10 states have internal predecessors, (2630), 0 states have call successors, (0), 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 23:09:48,157 INFO L175 Difference]: Start difference. First operand has 116 places, 148 transitions, 981 flow. Second operand 9 states and 1215 transitions. [2023-11-06 23:09:48,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 230 transitions, 1668 flow [2023-11-06 23:09:48,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 230 transitions, 1634 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-06 23:09:48,639 INFO L231 Difference]: Finished difference. Result has 128 places, 159 transitions, 1130 flow [2023-11-06 23:09:48,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=128, PETRI_TRANSITIONS=159} [2023-11-06 23:09:48,640 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 69 predicate places. [2023-11-06 23:09:48,641 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 159 transitions, 1130 flow [2023-11-06 23:09:48,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 0 states have call successors, (0), 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 23:09:48,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:48,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:48,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:09:48,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:48,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:48,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1237594805, now seen corresponding path program 10 times [2023-11-06 23:09:48,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:48,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102411787] [2023-11-06 23:09:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:48,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:49,229 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 23:09:49,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:49,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102411787] [2023-11-06 23:09:49,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102411787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:49,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:49,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:09:49,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392644443] [2023-11-06 23:09:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:49,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:09:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:09:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:09:49,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 263 [2023-11-06 23:09:49,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 159 transitions, 1130 flow. Second operand has 8 states, 8 states have (on average 123.625) internal successors, (989), 8 states have internal predecessors, (989), 0 states have call successors, (0), 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 23:09:49,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:49,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 263 [2023-11-06 23:09:49,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:52,613 INFO L124 PetriNetUnfolderBase]: 11280/20090 cut-off events. [2023-11-06 23:09:52,613 INFO L125 PetriNetUnfolderBase]: For 40103/41306 co-relation queries the response was YES. [2023-11-06 23:09:52,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67354 conditions, 20090 events. 11280/20090 cut-off events. For 40103/41306 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 159019 event pairs, 4636 based on Foata normal form. 206/19776 useless extension candidates. Maximal degree in co-relation 66235. Up to 14618 conditions per place. [2023-11-06 23:09:52,744 INFO L140 encePairwiseOnDemand]: 250/263 looper letters, 149 selfloop transitions, 30 changer transitions 2/239 dead transitions. [2023-11-06 23:09:52,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 239 transitions, 1843 flow [2023-11-06 23:09:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:09:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:09:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1076 transitions. [2023-11-06 23:09:52,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114068441064639 [2023-11-06 23:09:52,750 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1076 transitions. [2023-11-06 23:09:52,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1076 transitions. [2023-11-06 23:09:52,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:52,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1076 transitions. [2023-11-06 23:09:52,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 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 23:09:52,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 0 states have call successors, (0), 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 23:09:52,763 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 0 states have call successors, (0), 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 23:09:52,763 INFO L175 Difference]: Start difference. First operand has 128 places, 159 transitions, 1130 flow. Second operand 8 states and 1076 transitions. [2023-11-06 23:09:52,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 239 transitions, 1843 flow [2023-11-06 23:09:53,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 239 transitions, 1802 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-06 23:09:53,248 INFO L231 Difference]: Finished difference. Result has 137 places, 181 transitions, 1330 flow [2023-11-06 23:09:53,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1330, PETRI_PLACES=137, PETRI_TRANSITIONS=181} [2023-11-06 23:09:53,250 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 78 predicate places. [2023-11-06 23:09:53,250 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 181 transitions, 1330 flow [2023-11-06 23:09:53,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.625) internal successors, (989), 8 states have internal predecessors, (989), 0 states have call successors, (0), 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 23:09:53,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:53,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:53,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:09:53,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:53,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:53,252 INFO L85 PathProgramCache]: Analyzing trace with hash 353529543, now seen corresponding path program 11 times [2023-11-06 23:09:53,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:53,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893331182] [2023-11-06 23:09:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:53,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:53,659 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 23:09:53,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:53,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893331182] [2023-11-06 23:09:53,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893331182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:53,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:53,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:09:53,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240097257] [2023-11-06 23:09:53,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:53,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:09:53,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:53,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:09:53,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:53,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 263 [2023-11-06 23:09:53,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 181 transitions, 1330 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 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 23:09:53,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:53,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 263 [2023-11-06 23:09:53,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:56,385 INFO L124 PetriNetUnfolderBase]: 11802/21226 cut-off events. [2023-11-06 23:09:56,386 INFO L125 PetriNetUnfolderBase]: For 54778/56376 co-relation queries the response was YES. [2023-11-06 23:09:56,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76637 conditions, 21226 events. 11802/21226 cut-off events. For 54778/56376 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 172276 event pairs, 4910 based on Foata normal form. 350/20990 useless extension candidates. Maximal degree in co-relation 75434. Up to 15413 conditions per place. [2023-11-06 23:09:56,573 INFO L140 encePairwiseOnDemand]: 250/263 looper letters, 143 selfloop transitions, 31 changer transitions 3/241 dead transitions. [2023-11-06 23:09:56,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 241 transitions, 1982 flow [2023-11-06 23:09:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:09:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:09:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 954 transitions. [2023-11-06 23:09:56,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181966322650733 [2023-11-06 23:09:56,578 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 954 transitions. [2023-11-06 23:09:56,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 954 transitions. [2023-11-06 23:09:56,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:56,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 954 transitions. [2023-11-06 23:09:56,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.28571428571428) internal successors, (954), 7 states have internal predecessors, (954), 0 states have call successors, (0), 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 23:09:56,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 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 23:09:56,587 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 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 23:09:56,587 INFO L175 Difference]: Start difference. First operand has 137 places, 181 transitions, 1330 flow. Second operand 7 states and 954 transitions. [2023-11-06 23:09:56,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 241 transitions, 1982 flow [2023-11-06 23:09:57,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 241 transitions, 1936 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-06 23:09:57,224 INFO L231 Difference]: Finished difference. Result has 145 places, 188 transitions, 1448 flow [2023-11-06 23:09:57,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1448, PETRI_PLACES=145, PETRI_TRANSITIONS=188} [2023-11-06 23:09:57,226 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 86 predicate places. [2023-11-06 23:09:57,226 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 188 transitions, 1448 flow [2023-11-06 23:09:57,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 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 23:09:57,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:57,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:57,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:09:57,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:09:57,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1159888643, now seen corresponding path program 12 times [2023-11-06 23:09:57,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:57,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675271543] [2023-11-06 23:09:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:57,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675271543] [2023-11-06 23:09:57,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675271543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:57,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:57,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:09:57,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212894435] [2023-11-06 23:09:57,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:57,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:09:57,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:57,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:09:57,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:09:57,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-11-06 23:09:57,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 188 transitions, 1448 flow. Second operand has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 6 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 23:09:57,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:57,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-11-06 23:09:57,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:00,381 INFO L124 PetriNetUnfolderBase]: 11714/21213 cut-off events. [2023-11-06 23:10:00,381 INFO L125 PetriNetUnfolderBase]: For 71159/73826 co-relation queries the response was YES. [2023-11-06 23:10:00,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79793 conditions, 21213 events. 11714/21213 cut-off events. For 71159/73826 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 173720 event pairs, 4915 based on Foata normal form. 376/20813 useless extension candidates. Maximal degree in co-relation 78427. Up to 15688 conditions per place. [2023-11-06 23:10:00,613 INFO L140 encePairwiseOnDemand]: 253/263 looper letters, 148 selfloop transitions, 29 changer transitions 0/257 dead transitions. [2023-11-06 23:10:00,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 257 transitions, 2179 flow [2023-11-06 23:10:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:10:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:10:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 827 transitions. [2023-11-06 23:10:00,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240811153358682 [2023-11-06 23:10:00,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 827 transitions. [2023-11-06 23:10:00,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 827 transitions. [2023-11-06 23:10:00,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:00,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 827 transitions. [2023-11-06 23:10:00,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 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 23:10:00,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 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 23:10:00,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 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 23:10:00,625 INFO L175 Difference]: Start difference. First operand has 145 places, 188 transitions, 1448 flow. Second operand 6 states and 827 transitions. [2023-11-06 23:10:00,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 257 transitions, 2179 flow [2023-11-06 23:10:01,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 257 transitions, 2104 flow, removed 24 selfloop flow, removed 3 redundant places. [2023-11-06 23:10:01,312 INFO L231 Difference]: Finished difference. Result has 151 places, 205 transitions, 1639 flow [2023-11-06 23:10:01,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1639, PETRI_PLACES=151, PETRI_TRANSITIONS=205} [2023-11-06 23:10:01,313 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 92 predicate places. [2023-11-06 23:10:01,313 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 205 transitions, 1639 flow [2023-11-06 23:10:01,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 6 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 23:10:01,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:01,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:01,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:10:01,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:10:01,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:01,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2042781455, now seen corresponding path program 13 times [2023-11-06 23:10:01,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:01,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047742009] [2023-11-06 23:10:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:01,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:01,699 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 23:10:01,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:01,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047742009] [2023-11-06 23:10:01,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047742009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:01,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:01,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:10:01,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662967795] [2023-11-06 23:10:01,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:01,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:10:01,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:01,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:10:01,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:01,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 263 [2023-11-06 23:10:01,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 205 transitions, 1639 flow. Second operand has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 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 23:10:01,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:01,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 263 [2023-11-06 23:10:01,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:04,411 INFO L124 PetriNetUnfolderBase]: 11478/21057 cut-off events. [2023-11-06 23:10:04,411 INFO L125 PetriNetUnfolderBase]: For 70361/73165 co-relation queries the response was YES. [2023-11-06 23:10:04,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80567 conditions, 21057 events. 11478/21057 cut-off events. For 70361/73165 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 175246 event pairs, 5691 based on Foata normal form. 352/20673 useless extension candidates. Maximal degree in co-relation 79092. Up to 16988 conditions per place. [2023-11-06 23:10:04,634 INFO L140 encePairwiseOnDemand]: 254/263 looper letters, 137 selfloop transitions, 15 changer transitions 0/232 dead transitions. [2023-11-06 23:10:04,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 232 transitions, 2072 flow [2023-11-06 23:10:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:10:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:10:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 689 transitions. [2023-11-06 23:10:04,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239543726235741 [2023-11-06 23:10:04,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 689 transitions. [2023-11-06 23:10:04,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 689 transitions. [2023-11-06 23:10:04,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:04,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 689 transitions. [2023-11-06 23:10:04,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 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 23:10:04,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 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 23:10:04,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 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 23:10:04,646 INFO L175 Difference]: Start difference. First operand has 151 places, 205 transitions, 1639 flow. Second operand 5 states and 689 transitions. [2023-11-06 23:10:04,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 232 transitions, 2072 flow [2023-11-06 23:10:05,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 232 transitions, 2062 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-06 23:10:05,397 INFO L231 Difference]: Finished difference. Result has 156 places, 211 transitions, 1742 flow [2023-11-06 23:10:05,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1742, PETRI_PLACES=156, PETRI_TRANSITIONS=211} [2023-11-06 23:10:05,399 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 97 predicate places. [2023-11-06 23:10:05,399 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 211 transitions, 1742 flow [2023-11-06 23:10:05,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 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 23:10:05,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:05,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:05,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:10:05,400 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:10:05,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash -754769757, now seen corresponding path program 14 times [2023-11-06 23:10:05,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:05,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72711906] [2023-11-06 23:10:05,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:05,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:05,478 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 23:10:05,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:05,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72711906] [2023-11-06 23:10:05,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72711906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:05,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:05,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:10:05,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376203944] [2023-11-06 23:10:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:05,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:05,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:10:05,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 263 [2023-11-06 23:10:05,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 211 transitions, 1742 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 23:10:05,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:05,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 263 [2023-11-06 23:10:05,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:08,351 INFO L124 PetriNetUnfolderBase]: 10192/19109 cut-off events. [2023-11-06 23:10:08,351 INFO L125 PetriNetUnfolderBase]: For 66746/68634 co-relation queries the response was YES. [2023-11-06 23:10:08,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74410 conditions, 19109 events. 10192/19109 cut-off events. For 66746/68634 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 159816 event pairs, 6750 based on Foata normal form. 618/18740 useless extension candidates. Maximal degree in co-relation 73033. Up to 13331 conditions per place. [2023-11-06 23:10:08,549 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 167 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2023-11-06 23:10:08,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 267 transitions, 2558 flow [2023-11-06 23:10:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-06 23:10:08,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576679340937896 [2023-11-06 23:10:08,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-06 23:10:08,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-06 23:10:08,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:08,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-06 23:10:08,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 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 23:10:08,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 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 23:10:08,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 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 23:10:08,557 INFO L175 Difference]: Start difference. First operand has 156 places, 211 transitions, 1742 flow. Second operand 3 states and 440 transitions. [2023-11-06 23:10:08,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 267 transitions, 2558 flow [2023-11-06 23:10:09,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 267 transitions, 2480 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-11-06 23:10:09,152 INFO L231 Difference]: Finished difference. Result has 156 places, 211 transitions, 1702 flow [2023-11-06 23:10:09,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1702, PETRI_PLACES=156, PETRI_TRANSITIONS=211} [2023-11-06 23:10:09,153 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 97 predicate places. [2023-11-06 23:10:09,153 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 211 transitions, 1702 flow [2023-11-06 23:10:09,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 23:10:09,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:09,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:09,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:10:09,154 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:10:09,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash 630382563, now seen corresponding path program 15 times [2023-11-06 23:10:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:09,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269340273] [2023-11-06 23:10:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:09,580 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 23:10:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:09,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269340273] [2023-11-06 23:10:09,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269340273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:09,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:09,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:10:09,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254808460] [2023-11-06 23:10:09,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:09,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:10:09,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:09,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:10:09,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:09,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-11-06 23:10:09,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 211 transitions, 1702 flow. Second operand has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 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 23:10:09,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:09,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-11-06 23:10:09,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:12,923 INFO L124 PetriNetUnfolderBase]: 11975/22399 cut-off events. [2023-11-06 23:10:12,923 INFO L125 PetriNetUnfolderBase]: For 81175/83205 co-relation queries the response was YES. [2023-11-06 23:10:13,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89165 conditions, 22399 events. 11975/22399 cut-off events. For 81175/83205 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 192116 event pairs, 5215 based on Foata normal form. 272/21952 useless extension candidates. Maximal degree in co-relation 87787. Up to 14134 conditions per place. [2023-11-06 23:10:13,174 INFO L140 encePairwiseOnDemand]: 253/263 looper letters, 170 selfloop transitions, 34 changer transitions 4/289 dead transitions. [2023-11-06 23:10:13,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 289 transitions, 2567 flow [2023-11-06 23:10:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:10:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:10:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2023-11-06 23:10:13,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304182509505704 [2023-11-06 23:10:13,178 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2023-11-06 23:10:13,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2023-11-06 23:10:13,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:13,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2023-11-06 23:10:13,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 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 23:10:13,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 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 23:10:13,186 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 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 23:10:13,186 INFO L175 Difference]: Start difference. First operand has 156 places, 211 transitions, 1702 flow. Second operand 6 states and 837 transitions. [2023-11-06 23:10:13,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 289 transitions, 2567 flow [2023-11-06 23:10:14,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 289 transitions, 2563 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:10:14,093 INFO L231 Difference]: Finished difference. Result has 163 places, 225 transitions, 1963 flow [2023-11-06 23:10:14,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1963, PETRI_PLACES=163, PETRI_TRANSITIONS=225} [2023-11-06 23:10:14,094 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 104 predicate places. [2023-11-06 23:10:14,094 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 225 transitions, 1963 flow [2023-11-06 23:10:14,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 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 23:10:14,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:14,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:14,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:10:14,095 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:10:14,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:14,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1133586465, now seen corresponding path program 16 times [2023-11-06 23:10:14,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:14,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543852852] [2023-11-06 23:10:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:14,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:14,497 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 23:10:14,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543852852] [2023-11-06 23:10:14,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543852852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:14,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:14,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:10:14,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846955671] [2023-11-06 23:10:14,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:14,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:10:14,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:10:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:14,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-11-06 23:10:14,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 225 transitions, 1963 flow. Second operand has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 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 23:10:14,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:14,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-11-06 23:10:14,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:18,283 INFO L124 PetriNetUnfolderBase]: 13312/24872 cut-off events. [2023-11-06 23:10:18,283 INFO L125 PetriNetUnfolderBase]: For 109826/112240 co-relation queries the response was YES. [2023-11-06 23:10:18,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103972 conditions, 24872 events. 13312/24872 cut-off events. For 109826/112240 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 217712 event pairs, 5237 based on Foata normal form. 474/24641 useless extension candidates. Maximal degree in co-relation 102508. Up to 16990 conditions per place. [2023-11-06 23:10:18,530 INFO L140 encePairwiseOnDemand]: 253/263 looper letters, 175 selfloop transitions, 52 changer transitions 3/308 dead transitions. [2023-11-06 23:10:18,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 308 transitions, 3067 flow [2023-11-06 23:10:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:10:18,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:10:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 831 transitions. [2023-11-06 23:10:18,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526615969581749 [2023-11-06 23:10:18,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 831 transitions. [2023-11-06 23:10:18,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 831 transitions. [2023-11-06 23:10:18,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:18,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 831 transitions. [2023-11-06 23:10:18,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 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 23:10:18,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 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 23:10:18,539 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 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 23:10:18,539 INFO L175 Difference]: Start difference. First operand has 163 places, 225 transitions, 1963 flow. Second operand 6 states and 831 transitions. [2023-11-06 23:10:18,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 308 transitions, 3067 flow [2023-11-06 23:10:19,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 308 transitions, 3033 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-06 23:10:19,634 INFO L231 Difference]: Finished difference. Result has 172 places, 250 transitions, 2454 flow [2023-11-06 23:10:19,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2454, PETRI_PLACES=172, PETRI_TRANSITIONS=250} [2023-11-06 23:10:19,634 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 113 predicate places. [2023-11-06 23:10:19,635 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 250 transitions, 2454 flow [2023-11-06 23:10:19,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 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 23:10:19,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:19,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:10:19,636 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:10:19,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash 944196989, now seen corresponding path program 17 times [2023-11-06 23:10:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:19,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070994986] [2023-11-06 23:10:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:20,409 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 23:10:20,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:20,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070994986] [2023-11-06 23:10:20,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070994986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:20,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:20,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:10:20,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451989717] [2023-11-06 23:10:20,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:20,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:10:20,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:20,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:10:20,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:20,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-11-06 23:10:20,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 250 transitions, 2454 flow. Second operand has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 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 23:10:20,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:20,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-11-06 23:10:20,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:26,127 INFO L124 PetriNetUnfolderBase]: 15433/28834 cut-off events. [2023-11-06 23:10:26,127 INFO L125 PetriNetUnfolderBase]: For 151081/153266 co-relation queries the response was YES. [2023-11-06 23:10:26,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126164 conditions, 28834 events. 15433/28834 cut-off events. For 151081/153266 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 258352 event pairs, 6232 based on Foata normal form. 336/28327 useless extension candidates. Maximal degree in co-relation 124129. Up to 20434 conditions per place. [2023-11-06 23:10:26,412 INFO L140 encePairwiseOnDemand]: 252/263 looper letters, 191 selfloop transitions, 48 changer transitions 0/320 dead transitions. [2023-11-06 23:10:26,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 320 transitions, 3384 flow [2023-11-06 23:10:26,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:10:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:10:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1082 transitions. [2023-11-06 23:10:26,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142585551330798 [2023-11-06 23:10:26,415 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1082 transitions. [2023-11-06 23:10:26,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1082 transitions. [2023-11-06 23:10:26,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:26,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1082 transitions. [2023-11-06 23:10:26,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.25) internal successors, (1082), 8 states have internal predecessors, (1082), 0 states have call successors, (0), 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 23:10:26,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 0 states have call successors, (0), 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 23:10:26,422 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 0 states have call successors, (0), 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 23:10:26,423 INFO L175 Difference]: Start difference. First operand has 172 places, 250 transitions, 2454 flow. Second operand 8 states and 1082 transitions. [2023-11-06 23:10:26,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 320 transitions, 3384 flow [2023-11-06 23:10:28,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 320 transitions, 3338 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-06 23:10:28,230 INFO L231 Difference]: Finished difference. Result has 182 places, 268 transitions, 2747 flow [2023-11-06 23:10:28,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2747, PETRI_PLACES=182, PETRI_TRANSITIONS=268} [2023-11-06 23:10:28,231 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 123 predicate places. [2023-11-06 23:10:28,231 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 268 transitions, 2747 flow [2023-11-06 23:10:28,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 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 23:10:28,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:28,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:28,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:10:28,233 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:10:28,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:28,233 INFO L85 PathProgramCache]: Analyzing trace with hash -18925727, now seen corresponding path program 18 times [2023-11-06 23:10:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:28,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076143518] [2023-11-06 23:10:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:28,756 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 23:10:28,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:28,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076143518] [2023-11-06 23:10:28,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076143518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:28,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:28,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:10:28,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016676370] [2023-11-06 23:10:28,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:28,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:10:28,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:10:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:28,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-11-06 23:10:28,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 268 transitions, 2747 flow. Second operand has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 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 23:10:28,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:28,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-11-06 23:10:28,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:35,622 INFO L124 PetriNetUnfolderBase]: 17029/31396 cut-off events. [2023-11-06 23:10:35,622 INFO L125 PetriNetUnfolderBase]: For 177820/180945 co-relation queries the response was YES. [2023-11-06 23:10:35,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140536 conditions, 31396 events. 17029/31396 cut-off events. For 177820/180945 co-relation queries the response was YES. Maximal size of possible extension queue 1054. Compared 280164 event pairs, 7303 based on Foata normal form. 436/30703 useless extension candidates. Maximal degree in co-relation 138337. Up to 21803 conditions per place. [2023-11-06 23:10:35,990 INFO L140 encePairwiseOnDemand]: 252/263 looper letters, 223 selfloop transitions, 37 changer transitions 4/351 dead transitions. [2023-11-06 23:10:35,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 351 transitions, 3903 flow [2023-11-06 23:10:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:10:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:10:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 831 transitions. [2023-11-06 23:10:35,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526615969581749 [2023-11-06 23:10:35,993 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 831 transitions. [2023-11-06 23:10:35,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 831 transitions. [2023-11-06 23:10:35,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:35,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 831 transitions. [2023-11-06 23:10:35,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 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 23:10:36,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 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 23:10:36,000 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 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 23:10:36,001 INFO L175 Difference]: Start difference. First operand has 182 places, 268 transitions, 2747 flow. Second operand 6 states and 831 transitions. [2023-11-06 23:10:36,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 351 transitions, 3903 flow [2023-11-06 23:10:38,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 351 transitions, 3840 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-11-06 23:10:38,363 INFO L231 Difference]: Finished difference. Result has 188 places, 289 transitions, 3059 flow [2023-11-06 23:10:38,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3059, PETRI_PLACES=188, PETRI_TRANSITIONS=289} [2023-11-06 23:10:38,364 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 129 predicate places. [2023-11-06 23:10:38,364 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 289 transitions, 3059 flow [2023-11-06 23:10:38,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 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 23:10:38,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:38,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:38,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 23:10:38,365 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:10:38,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:38,366 INFO L85 PathProgramCache]: Analyzing trace with hash 375035845, now seen corresponding path program 19 times [2023-11-06 23:10:38,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:38,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788548235] [2023-11-06 23:10:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:38,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:38,721 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 23:10:38,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:38,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788548235] [2023-11-06 23:10:38,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788548235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:38,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:38,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:10:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520076801] [2023-11-06 23:10:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:38,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:10:38,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:38,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:10:38,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:38,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-11-06 23:10:38,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 289 transitions, 3059 flow. Second operand has 8 states, 8 states have (on average 125.5) internal successors, (1004), 8 states have internal predecessors, (1004), 0 states have call successors, (0), 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 23:10:38,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:38,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-11-06 23:10:38,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:45,987 INFO L124 PetriNetUnfolderBase]: 18345/33680 cut-off events. [2023-11-06 23:10:45,987 INFO L125 PetriNetUnfolderBase]: For 204089/207021 co-relation queries the response was YES. [2023-11-06 23:10:46,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152752 conditions, 33680 events. 18345/33680 cut-off events. For 204089/207021 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 301454 event pairs, 7277 based on Foata normal form. 416/33224 useless extension candidates. Maximal degree in co-relation 150923. Up to 22380 conditions per place. [2023-11-06 23:10:46,411 INFO L140 encePairwiseOnDemand]: 253/263 looper letters, 247 selfloop transitions, 41 changer transitions 8/370 dead transitions. [2023-11-06 23:10:46,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 370 transitions, 4170 flow [2023-11-06 23:10:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:10:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:10:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 961 transitions. [2023-11-06 23:10:46,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219989136338946 [2023-11-06 23:10:46,415 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 961 transitions. [2023-11-06 23:10:46,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 961 transitions. [2023-11-06 23:10:46,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:46,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 961 transitions. [2023-11-06 23:10:46,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.28571428571428) internal successors, (961), 7 states have internal predecessors, (961), 0 states have call successors, (0), 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 23:10:46,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 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 23:10:46,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 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 23:10:46,425 INFO L175 Difference]: Start difference. First operand has 188 places, 289 transitions, 3059 flow. Second operand 7 states and 961 transitions. [2023-11-06 23:10:46,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 370 transitions, 4170 flow [2023-11-06 23:10:48,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 370 transitions, 4148 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-11-06 23:10:48,733 INFO L231 Difference]: Finished difference. Result has 195 places, 287 transitions, 3096 flow [2023-11-06 23:10:48,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3096, PETRI_PLACES=195, PETRI_TRANSITIONS=287} [2023-11-06 23:10:48,734 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 136 predicate places. [2023-11-06 23:10:48,734 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 287 transitions, 3096 flow [2023-11-06 23:10:48,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.5) internal successors, (1004), 8 states have internal predecessors, (1004), 0 states have call successors, (0), 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 23:10:48,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:48,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:48,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 23:10:48,735 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:10:48,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1940410747, now seen corresponding path program 20 times [2023-11-06 23:10:48,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:48,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500030286] [2023-11-06 23:10:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:48,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:49,151 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 23:10:49,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:49,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500030286] [2023-11-06 23:10:49,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500030286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:49,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:49,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:10:49,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716647564] [2023-11-06 23:10:49,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:49,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:10:49,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:49,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:10:49,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:49,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 263 [2023-11-06 23:10:49,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 287 transitions, 3096 flow. Second operand has 8 states, 8 states have (on average 124.5) internal successors, (996), 8 states have internal predecessors, (996), 0 states have call successors, (0), 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 23:10:49,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:49,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 263 [2023-11-06 23:10:49,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand