./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.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_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/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_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/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_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:46:24,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:46:24,686 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:46:24,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:46:24,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:46:24,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:46:24,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:46:24,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:46:24,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:46:24,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:46:24,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:46:24,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:46:24,743 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:46:24,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:46:24,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:46:24,746 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:46:24,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:46:24,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:46:24,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:46:24,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:46:24,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:46:24,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:46:24,749 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:46:24,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:46:24,750 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:46:24,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:46:24,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:46:24,752 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:46:24,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:46:24,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:46:24,754 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:46:24,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:46:24,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:46:24,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:46:24,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:46:24,756 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:46:24,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:46:24,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:46:24,757 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:46:24,757 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_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2023-11-06 22:46:25,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:46:25,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:46:25,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:46:25,061 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:46:25,062 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:46:25,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-11-06 22:46:28,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:46:28,366 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:46:28,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-11-06 22:46:28,378 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/data/e228ecbc2/9daaa20e8e65413aa99dad6255e65bf4/FLAG4cbd723db [2023-11-06 22:46:28,397 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/data/e228ecbc2/9daaa20e8e65413aa99dad6255e65bf4 [2023-11-06 22:46:28,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:46:28,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:46:28,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:28,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:46:28,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:46:28,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6005a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28, skipping insertion in model container [2023-11-06 22:46:28,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:46:28,660 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_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2023-11-06 22:46:28,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:28,676 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:46:28,705 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_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2023-11-06 22:46:28,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:28,715 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:46:28,716 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:46:28,723 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:46:28,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28 WrapperNode [2023-11-06 22:46:28,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:28,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:28,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:46:28,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:46:28,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,778 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 246 [2023-11-06 22:46:28,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:28,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:46:28,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:46:28,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:46:28,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,809 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:46:28,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:46:28,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:46:28,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:46:28,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (1/1) ... [2023-11-06 22:46:28,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:46:28,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:28,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:28,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60fa3074-eaa8-4a9c-acc0-a3ea9b21c969/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:46:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:46:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:46:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:46:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:46:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:46:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:46:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:46:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:46:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:46:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:46:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-06 22:46:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-06 22:46:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:46:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:46:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:46:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:46:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:46:28,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:46:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:46:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:46:28,896 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:46:29,014 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:46:29,016 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:46:29,420 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:46:29,550 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:46:29,551 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:46:29,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:29 BoogieIcfgContainer [2023-11-06 22:46:29,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:46:29,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:46:29,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:46:29,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:46:29,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:28" (1/3) ... [2023-11-06 22:46:29,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18aa2789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:29, skipping insertion in model container [2023-11-06 22:46:29,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:28" (2/3) ... [2023-11-06 22:46:29,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18aa2789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:29, skipping insertion in model container [2023-11-06 22:46:29,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:29" (3/3) ... [2023-11-06 22:46:29,571 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-11-06 22:46:29,581 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:46:29,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:46:29,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:46:29,592 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:46:29,679 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-06 22:46:29,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 170 transitions, 375 flow [2023-11-06 22:46:29,838 INFO L124 PetriNetUnfolderBase]: 2/165 cut-off events. [2023-11-06 22:46:29,838 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:46:29,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 165 events. 2/165 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-11-06 22:46:29,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 170 transitions, 375 flow [2023-11-06 22:46:29,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 150 transitions, 330 flow [2023-11-06 22:46:29,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:46:29,868 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 150 transitions, 330 flow [2023-11-06 22:46:29,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 150 transitions, 330 flow [2023-11-06 22:46:29,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 150 transitions, 330 flow [2023-11-06 22:46:29,926 INFO L124 PetriNetUnfolderBase]: 2/150 cut-off events. [2023-11-06 22:46:29,927 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:46:29,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 150 events. 2/150 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-11-06 22:46:29,931 INFO L119 LiptonReduction]: Number of co-enabled transitions 2082 [2023-11-06 22:46:37,330 INFO L134 LiptonReduction]: Checked pairs total: 10533 [2023-11-06 22:46:37,330 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-11-06 22:46:37,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:46:37,352 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;@433a96b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:46:37,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 22:46:37,365 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:46:37,365 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2023-11-06 22:46:37,365 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:46:37,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:37,366 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] [2023-11-06 22:46:37,367 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 3 more)] === [2023-11-06 22:46:37,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:37,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1602000207, now seen corresponding path program 1 times [2023-11-06 22:46:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709250688] [2023-11-06 22:46:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:37,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709250688] [2023-11-06 22:46:39,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709250688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:39,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:39,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:46:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204019169] [2023-11-06 22:46:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:39,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:46:39,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:39,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:46:39,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:46:39,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 288 [2023-11-06 22:46:39,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:39,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:39,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 288 [2023-11-06 22:46:39,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:46,959 INFO L124 PetriNetUnfolderBase]: 53433/69727 cut-off events. [2023-11-06 22:46:46,960 INFO L125 PetriNetUnfolderBase]: For 3774/3774 co-relation queries the response was YES. [2023-11-06 22:46:47,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143512 conditions, 69727 events. 53433/69727 cut-off events. For 3774/3774 co-relation queries the response was YES. Maximal size of possible extension queue 1629. Compared 370168 event pairs, 11946 based on Foata normal form. 1/69728 useless extension candidates. Maximal degree in co-relation 124457. Up to 27380 conditions per place. [2023-11-06 22:46:47,372 INFO L140 encePairwiseOnDemand]: 280/288 looper letters, 101 selfloop transitions, 11 changer transitions 34/146 dead transitions. [2023-11-06 22:46:47,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 146 transitions, 668 flow [2023-11-06 22:46:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:46:47,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:46:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 939 transitions. [2023-11-06 22:46:47,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434027777777778 [2023-11-06 22:46:47,397 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 939 transitions. [2023-11-06 22:46:47,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 939 transitions. [2023-11-06 22:46:47,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:47,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 939 transitions. [2023-11-06 22:46:47,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.5) internal successors, (939), 6 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:47,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:47,424 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:47,426 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 114 flow. Second operand 6 states and 939 transitions. [2023-11-06 22:46:47,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 146 transitions, 668 flow [2023-11-06 22:46:47,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 146 transitions, 612 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-06 22:46:47,667 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 165 flow [2023-11-06 22:46:47,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2023-11-06 22:46:47,675 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2023-11-06 22:46:47,676 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 165 flow [2023-11-06 22:46:47,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:47,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:47,678 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] [2023-11-06 22:46:47,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:46:47,679 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 3 more)] === [2023-11-06 22:46:47,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash 459562291, now seen corresponding path program 2 times [2023-11-06 22:46:47,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:47,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210202443] [2023-11-06 22:46:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:47,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:47,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:47,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210202443] [2023-11-06 22:46:47,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210202443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:47,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:47,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:46:47,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656113988] [2023-11-06 22:46:47,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:47,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:46:47,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:47,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:46:47,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:46:47,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 288 [2023-11-06 22:46:47,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 165 flow. Second operand has 8 states, 8 states have (on average 140.5) internal successors, (1124), 8 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:47,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:47,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 288 [2023-11-06 22:46:47,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:52,187 INFO L124 PetriNetUnfolderBase]: 24098/35506 cut-off events. [2023-11-06 22:46:52,187 INFO L125 PetriNetUnfolderBase]: For 5894/9416 co-relation queries the response was YES. [2023-11-06 22:46:52,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78970 conditions, 35506 events. 24098/35506 cut-off events. For 5894/9416 co-relation queries the response was YES. Maximal size of possible extension queue 1731. Compared 258161 event pairs, 3186 based on Foata normal form. 32/33033 useless extension candidates. Maximal degree in co-relation 78958. Up to 9142 conditions per place. [2023-11-06 22:46:52,470 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 108 selfloop transitions, 51 changer transitions 1/175 dead transitions. [2023-11-06 22:46:52,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 175 transitions, 760 flow [2023-11-06 22:46:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:46:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:46:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1249 transitions. [2023-11-06 22:46:52,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421006944444444 [2023-11-06 22:46:52,476 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1249 transitions. [2023-11-06 22:46:52,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1249 transitions. [2023-11-06 22:46:52,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:52,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1249 transitions. [2023-11-06 22:46:52,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.125) internal successors, (1249), 8 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:52,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 288.0) internal successors, (2592), 9 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:52,489 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 288.0) internal successors, (2592), 9 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:52,490 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 165 flow. Second operand 8 states and 1249 transitions. [2023-11-06 22:46:52,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 175 transitions, 760 flow [2023-11-06 22:46:52,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 175 transitions, 750 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:46:52,498 INFO L231 Difference]: Finished difference. Result has 61 places, 95 transitions, 362 flow [2023-11-06 22:46:52,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=61, PETRI_TRANSITIONS=95} [2023-11-06 22:46:52,500 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-11-06 22:46:52,500 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 95 transitions, 362 flow [2023-11-06 22:46:52,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.5) internal successors, (1124), 8 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:52,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:52,502 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] [2023-11-06 22:46:52,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:46:52,502 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 3 more)] === [2023-11-06 22:46:52,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1399918885, now seen corresponding path program 3 times [2023-11-06 22:46:52,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:52,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661029419] [2023-11-06 22:46:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:52,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:53,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:53,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661029419] [2023-11-06 22:46:53,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661029419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:53,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:53,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:46:53,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008409245] [2023-11-06 22:46:53,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:53,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:46:53,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:53,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:46:53,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:46:53,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 288 [2023-11-06 22:46:53,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 95 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:53,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:53,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 288 [2023-11-06 22:46:53,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:59,886 INFO L124 PetriNetUnfolderBase]: 65201/86210 cut-off events. [2023-11-06 22:46:59,886 INFO L125 PetriNetUnfolderBase]: For 53460/53460 co-relation queries the response was YES. [2023-11-06 22:47:00,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246889 conditions, 86210 events. 65201/86210 cut-off events. For 53460/53460 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 487206 event pairs, 10788 based on Foata normal form. 2/86212 useless extension candidates. Maximal degree in co-relation 86433. Up to 42706 conditions per place. [2023-11-06 22:47:00,274 INFO L140 encePairwiseOnDemand]: 280/288 looper letters, 246 selfloop transitions, 15 changer transitions 35/296 dead transitions. [2023-11-06 22:47:00,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 296 transitions, 1705 flow [2023-11-06 22:47:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:47:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:47:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 938 transitions. [2023-11-06 22:47:00,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428240740740741 [2023-11-06 22:47:00,283 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 938 transitions. [2023-11-06 22:47:00,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 938 transitions. [2023-11-06 22:47:00,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:00,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 938 transitions. [2023-11-06 22:47:00,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:00,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:00,294 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:00,294 INFO L175 Difference]: Start difference. First operand has 61 places, 95 transitions, 362 flow. Second operand 6 states and 938 transitions. [2023-11-06 22:47:00,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 296 transitions, 1705 flow [2023-11-06 22:47:00,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 296 transitions, 1694 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:47:00,481 INFO L231 Difference]: Finished difference. Result has 68 places, 99 transitions, 446 flow [2023-11-06 22:47:00,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=99} [2023-11-06 22:47:00,484 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-06 22:47:00,488 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 99 transitions, 446 flow [2023-11-06 22:47:00,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:00,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:00,490 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] [2023-11-06 22:47:00,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:47:00,491 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 3 more)] === [2023-11-06 22:47:00,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1847491201, now seen corresponding path program 4 times [2023-11-06 22:47:00,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:00,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430217814] [2023-11-06 22:47:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:00,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:00,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:00,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430217814] [2023-11-06 22:47:00,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430217814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:00,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:00,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:47:00,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350963588] [2023-11-06 22:47:00,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:00,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:47:00,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:00,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:47:00,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:00,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 288 [2023-11-06 22:47:00,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 99 transitions, 446 flow. Second operand has 7 states, 7 states have (on average 142.14285714285714) internal successors, (995), 7 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:00,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:00,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 288 [2023-11-06 22:47:00,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:04,360 INFO L124 PetriNetUnfolderBase]: 22671/33247 cut-off events. [2023-11-06 22:47:04,360 INFO L125 PetriNetUnfolderBase]: For 28106/36809 co-relation queries the response was YES. [2023-11-06 22:47:04,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98368 conditions, 33247 events. 22671/33247 cut-off events. For 28106/36809 co-relation queries the response was YES. Maximal size of possible extension queue 1541. Compared 229409 event pairs, 3257 based on Foata normal form. 826/32624 useless extension candidates. Maximal degree in co-relation 59248. Up to 24421 conditions per place. [2023-11-06 22:47:04,598 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 132 selfloop transitions, 48 changer transitions 0/199 dead transitions. [2023-11-06 22:47:04,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 199 transitions, 1131 flow [2023-11-06 22:47:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:47:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:47:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1088 transitions. [2023-11-06 22:47:04,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-11-06 22:47:04,603 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1088 transitions. [2023-11-06 22:47:04,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1088 transitions. [2023-11-06 22:47:04,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:04,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1088 transitions. [2023-11-06 22:47:04,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 155.42857142857142) internal successors, (1088), 7 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:04,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:04,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:04,613 INFO L175 Difference]: Start difference. First operand has 68 places, 99 transitions, 446 flow. Second operand 7 states and 1088 transitions. [2023-11-06 22:47:04,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 199 transitions, 1131 flow [2023-11-06 22:47:04,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 199 transitions, 1069 flow, removed 13 selfloop flow, removed 6 redundant places. [2023-11-06 22:47:04,658 INFO L231 Difference]: Finished difference. Result has 73 places, 141 transitions, 788 flow [2023-11-06 22:47:04,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=788, PETRI_PLACES=73, PETRI_TRANSITIONS=141} [2023-11-06 22:47:04,660 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2023-11-06 22:47:04,660 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 141 transitions, 788 flow [2023-11-06 22:47:04,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.14285714285714) internal successors, (995), 7 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:04,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:04,661 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] [2023-11-06 22:47:04,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:47:04,661 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 3 more)] === [2023-11-06 22:47:04,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash -714672833, now seen corresponding path program 5 times [2023-11-06 22:47:04,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:04,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275985277] [2023-11-06 22:47:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:05,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275985277] [2023-11-06 22:47:05,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275985277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:05,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:05,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:05,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826668035] [2023-11-06 22:47:05,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:05,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:47:05,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:05,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:47:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:05,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 288 [2023-11-06 22:47:05,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 141 transitions, 788 flow. Second operand has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:05,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:05,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 288 [2023-11-06 22:47:05,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:09,274 INFO L124 PetriNetUnfolderBase]: 24532/35839 cut-off events. [2023-11-06 22:47:09,275 INFO L125 PetriNetUnfolderBase]: For 46879/56318 co-relation queries the response was YES. [2023-11-06 22:47:09,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120574 conditions, 35839 events. 24532/35839 cut-off events. For 46879/56318 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 248289 event pairs, 4530 based on Foata normal form. 1566/35654 useless extension candidates. Maximal degree in co-relation 50921. Up to 25464 conditions per place. [2023-11-06 22:47:09,559 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 132 selfloop transitions, 60 changer transitions 0/211 dead transitions. [2023-11-06 22:47:09,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 211 transitions, 1454 flow [2023-11-06 22:47:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:47:09,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:47:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 933 transitions. [2023-11-06 22:47:09,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5399305555555556 [2023-11-06 22:47:09,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 933 transitions. [2023-11-06 22:47:09,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 933 transitions. [2023-11-06 22:47:09,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:09,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 933 transitions. [2023-11-06 22:47:09,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.5) internal successors, (933), 6 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:09,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:09,573 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:09,573 INFO L175 Difference]: Start difference. First operand has 73 places, 141 transitions, 788 flow. Second operand 6 states and 933 transitions. [2023-11-06 22:47:09,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 211 transitions, 1454 flow [2023-11-06 22:47:09,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 211 transitions, 1454 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:47:09,632 INFO L231 Difference]: Finished difference. Result has 80 places, 158 transitions, 1086 flow [2023-11-06 22:47:09,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1086, PETRI_PLACES=80, PETRI_TRANSITIONS=158} [2023-11-06 22:47:09,635 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2023-11-06 22:47:09,636 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 158 transitions, 1086 flow [2023-11-06 22:47:09,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:09,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:09,637 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] [2023-11-06 22:47:09,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:47:09,637 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 3 more)] === [2023-11-06 22:47:09,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash 380787341, now seen corresponding path program 6 times [2023-11-06 22:47:09,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:09,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791674780] [2023-11-06 22:47:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:09,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:09,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:09,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791674780] [2023-11-06 22:47:09,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791674780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:09,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:09,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:47:09,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505742129] [2023-11-06 22:47:09,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:09,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:47:09,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:47:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:09,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 288 [2023-11-06 22:47:09,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 158 transitions, 1086 flow. Second operand has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:09,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:09,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 288 [2023-11-06 22:47:09,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:16,334 INFO L124 PetriNetUnfolderBase]: 41262/61586 cut-off events. [2023-11-06 22:47:16,334 INFO L125 PetriNetUnfolderBase]: For 97042/110435 co-relation queries the response was YES. [2023-11-06 22:47:16,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215523 conditions, 61586 events. 41262/61586 cut-off events. For 97042/110435 co-relation queries the response was YES. Maximal size of possible extension queue 2729. Compared 469542 event pairs, 9241 based on Foata normal form. 2838/61857 useless extension candidates. Maximal degree in co-relation 82580. Up to 16478 conditions per place. [2023-11-06 22:47:16,731 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 157 selfloop transitions, 151 changer transitions 0/327 dead transitions. [2023-11-06 22:47:16,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 327 transitions, 2664 flow [2023-11-06 22:47:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:47:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 798 transitions. [2023-11-06 22:47:16,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2023-11-06 22:47:16,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 798 transitions. [2023-11-06 22:47:16,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 798 transitions. [2023-11-06 22:47:16,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:16,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 798 transitions. [2023-11-06 22:47:16,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:16,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:16,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:16,743 INFO L175 Difference]: Start difference. First operand has 80 places, 158 transitions, 1086 flow. Second operand 5 states and 798 transitions. [2023-11-06 22:47:16,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 327 transitions, 2664 flow [2023-11-06 22:47:16,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 327 transitions, 2569 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:47:16,952 INFO L231 Difference]: Finished difference. Result has 83 places, 248 transitions, 2204 flow [2023-11-06 22:47:16,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2204, PETRI_PLACES=83, PETRI_TRANSITIONS=248} [2023-11-06 22:47:16,953 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-11-06 22:47:16,953 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 248 transitions, 2204 flow [2023-11-06 22:47:16,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:16,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:16,954 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] [2023-11-06 22:47:16,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:47:16,954 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 3 more)] === [2023-11-06 22:47:16,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:16,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1088665999, now seen corresponding path program 7 times [2023-11-06 22:47:16,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:16,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730828364] [2023-11-06 22:47:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:16,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:17,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:17,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730828364] [2023-11-06 22:47:17,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730828364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:17,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:17,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:47:17,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973062960] [2023-11-06 22:47:17,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:17,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:47:17,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:47:17,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:17,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 288 [2023-11-06 22:47:17,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 248 transitions, 2204 flow. Second operand has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:17,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:17,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 288 [2023-11-06 22:47:17,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:25,801 INFO L124 PetriNetUnfolderBase]: 45410/68732 cut-off events. [2023-11-06 22:47:25,801 INFO L125 PetriNetUnfolderBase]: For 212691/231803 co-relation queries the response was YES. [2023-11-06 22:47:26,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278009 conditions, 68732 events. 45410/68732 cut-off events. For 212691/231803 co-relation queries the response was YES. Maximal size of possible extension queue 3082. Compared 549438 event pairs, 6476 based on Foata normal form. 4550/69996 useless extension candidates. Maximal degree in co-relation 108492. Up to 22337 conditions per place. [2023-11-06 22:47:26,680 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 130 selfloop transitions, 240 changer transitions 2/391 dead transitions. [2023-11-06 22:47:26,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 391 transitions, 3767 flow [2023-11-06 22:47:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:47:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:47:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1116 transitions. [2023-11-06 22:47:26,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2023-11-06 22:47:26,686 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1116 transitions. [2023-11-06 22:47:26,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1116 transitions. [2023-11-06 22:47:26,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:26,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1116 transitions. [2023-11-06 22:47:26,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.42857142857142) internal successors, (1116), 7 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 22:47:26,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:26,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:26,696 INFO L175 Difference]: Start difference. First operand has 83 places, 248 transitions, 2204 flow. Second operand 7 states and 1116 transitions. [2023-11-06 22:47:26,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 391 transitions, 3767 flow [2023-11-06 22:47:27,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 391 transitions, 3675 flow, removed 46 selfloop flow, removed 0 redundant places. [2023-11-06 22:47:27,182 INFO L231 Difference]: Finished difference. Result has 91 places, 307 transitions, 3271 flow [2023-11-06 22:47:27,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3271, PETRI_PLACES=91, PETRI_TRANSITIONS=307} [2023-11-06 22:47:27,184 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2023-11-06 22:47:27,184 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 307 transitions, 3271 flow [2023-11-06 22:47:27,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:27,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:27,186 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] [2023-11-06 22:47:27,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:47:27,186 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 3 more)] === [2023-11-06 22:47:27,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:27,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1391874893, now seen corresponding path program 8 times [2023-11-06 22:47:27,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:27,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75875875] [2023-11-06 22:47:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:27,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:27,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:27,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75875875] [2023-11-06 22:47:27,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75875875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:27,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:27,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:27,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545777303] [2023-11-06 22:47:27,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:27,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:47:27,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:47:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:27,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 288 [2023-11-06 22:47:27,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 307 transitions, 3271 flow. Second operand has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:27,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:27,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 288 [2023-11-06 22:47:27,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand