./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/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_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:57,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:57,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:17:57,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:57,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:57,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:57,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:57,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:57,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:57,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:57,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:57,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:57,704 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:57,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:57,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:57,707 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:57,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:57,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:57,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:57,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:57,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:57,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:57,710 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:17:57,710 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:17:57,711 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:57,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:57,712 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:57,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:57,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:57,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:57,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:57,715 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:57,715 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:57,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:57,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:57,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:57,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:57,717 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:57,717 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:57,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:57,717 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:57,718 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_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b [2023-11-06 22:17:58,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:58,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:58,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:58,078 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:58,078 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:58,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2023-11-06 22:18:01,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:01,377 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:01,378 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2023-11-06 22:18:01,389 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/data/5d954d2b2/3d0b0133eecc4ffa857802fb80eb16ec/FLAG9b34a70a1 [2023-11-06 22:18:01,408 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/data/5d954d2b2/3d0b0133eecc4ffa857802fb80eb16ec [2023-11-06 22:18:01,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:01,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:01,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:01,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:01,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:01,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5806751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01, skipping insertion in model container [2023-11-06 22:18:01,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:01,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:01,668 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:01,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:01,731 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:01,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01 WrapperNode [2023-11-06 22:18:01,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:01,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:01,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:01,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:01,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,788 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 344 [2023-11-06 22:18:01,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:01,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:01,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:01,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:01,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:01,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:01,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:01,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:01,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:01,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:01,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:01,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5d72c0-3ce6-4d4a-9d80-a637a2b8eed1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:18:01,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:18:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:18:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:18:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:18:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:18:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:18:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:18:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:18:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:18:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:18:01,972 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 22:18:02,148 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:02,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:02,729 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:02,744 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:02,744 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:18:02,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:02 BoogieIcfgContainer [2023-11-06 22:18:02,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:02,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:02,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:02,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:02,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:01" (1/3) ... [2023-11-06 22:18:02,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e0705d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:02, skipping insertion in model container [2023-11-06 22:18:02,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (2/3) ... [2023-11-06 22:18:02,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e0705d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:02, skipping insertion in model container [2023-11-06 22:18:02,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:02" (3/3) ... [2023-11-06 22:18:02,758 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2023-11-06 22:18:02,767 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:18:02,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:02,779 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 47 error locations. [2023-11-06 22:18:02,779 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:18:03,012 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:18:03,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 437 places, 454 transitions, 929 flow [2023-11-06 22:18:03,412 INFO L124 PetriNetUnfolderBase]: 27/451 cut-off events. [2023-11-06 22:18:03,412 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:18:03,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 451 events. 27/451 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1451 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 314. Up to 2 conditions per place. [2023-11-06 22:18:03,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 437 places, 454 transitions, 929 flow [2023-11-06 22:18:03,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 410 places, 425 transitions, 868 flow [2023-11-06 22:18:03,462 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:03,481 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 410 places, 425 transitions, 868 flow [2023-11-06 22:18:03,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 410 places, 425 transitions, 868 flow [2023-11-06 22:18:03,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 410 places, 425 transitions, 868 flow [2023-11-06 22:18:03,636 INFO L124 PetriNetUnfolderBase]: 25/425 cut-off events. [2023-11-06 22:18:03,636 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:18:03,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 425 events. 25/425 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1441 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 314. Up to 2 conditions per place. [2023-11-06 22:18:03,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 67830 [2023-11-06 22:18:15,024 INFO L134 LiptonReduction]: Checked pairs total: 228517 [2023-11-06 22:18:15,025 INFO L136 LiptonReduction]: Total number of compositions: 401 [2023-11-06 22:18:15,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:15,046 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;@27b6d5e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:15,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2023-11-06 22:18:15,048 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:15,048 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:18:15,048 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:15,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:15,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:18:15,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:15,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1722, now seen corresponding path program 1 times [2023-11-06 22:18:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:15,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289206919] [2023-11-06 22:18:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:15,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:15,157 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 22:18:15,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289206919] [2023-11-06 22:18:15,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289206919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:15,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:15,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:18:15,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565988786] [2023-11-06 22:18:15,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:15,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:18:15,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:18:15,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:15,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 855 [2023-11-06 22:18:15,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 141 transitions, 300 flow. Second operand has 2 states, 2 states have (on average 439.5) internal successors, (879), 2 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:15,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:15,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 855 [2023-11-06 22:18:15,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:18,492 INFO L124 PetriNetUnfolderBase]: 15681/25913 cut-off events. [2023-11-06 22:18:18,492 INFO L125 PetriNetUnfolderBase]: For 608/608 co-relation queries the response was YES. [2023-11-06 22:18:18,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46479 conditions, 25913 events. 15681/25913 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 1470. Compared 212704 event pairs, 9597 based on Foata normal form. 291/18728 useless extension candidates. Maximal degree in co-relation 43800. Up to 20078 conditions per place. [2023-11-06 22:18:18,734 INFO L140 encePairwiseOnDemand]: 839/855 looper letters, 63 selfloop transitions, 0 changer transitions 1/125 dead transitions. [2023-11-06 22:18:18,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 125 transitions, 396 flow [2023-11-06 22:18:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:18:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:18:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 958 transitions. [2023-11-06 22:18:18,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.560233918128655 [2023-11-06 22:18:18,761 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 958 transitions. [2023-11-06 22:18:18,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 958 transitions. [2023-11-06 22:18:18,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:18,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 958 transitions. [2023-11-06 22:18:18,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 479.0) internal successors, (958), 2 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:18,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 855.0) internal successors, (2565), 3 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:18,792 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 855.0) internal successors, (2565), 3 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:18,794 INFO L175 Difference]: Start difference. First operand has 132 places, 141 transitions, 300 flow. Second operand 2 states and 958 transitions. [2023-11-06 22:18:18,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 125 transitions, 396 flow [2023-11-06 22:18:18,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 125 transitions, 384 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:18:18,815 INFO L231 Difference]: Finished difference. Result has 112 places, 124 transitions, 253 flow [2023-11-06 22:18:18,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=855, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=253, PETRI_PLACES=112, PETRI_TRANSITIONS=124} [2023-11-06 22:18:18,822 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -20 predicate places. [2023-11-06 22:18:18,823 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 124 transitions, 253 flow [2023-11-06 22:18:18,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 439.5) internal successors, (879), 2 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:18,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:18,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:18:18,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:18:18,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:18,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:18,826 INFO L85 PathProgramCache]: Analyzing trace with hash 53123919, now seen corresponding path program 1 times [2023-11-06 22:18:18,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:18,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338210597] [2023-11-06 22:18:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:18,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:18,952 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 22:18:18,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:18,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338210597] [2023-11-06 22:18:18,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338210597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:18,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:18,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566754345] [2023-11-06 22:18:18,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:18,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:18,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 855 [2023-11-06 22:18:19,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:19,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:19,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 855 [2023-11-06 22:18:19,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:22,260 INFO L124 PetriNetUnfolderBase]: 20477/34131 cut-off events. [2023-11-06 22:18:22,260 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-11-06 22:18:22,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60729 conditions, 34131 events. 20477/34131 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 1665. Compared 287113 event pairs, 9710 based on Foata normal form. 0/25041 useless extension candidates. Maximal degree in co-relation 60726. Up to 26329 conditions per place. [2023-11-06 22:18:22,506 INFO L140 encePairwiseOnDemand]: 847/855 looper letters, 90 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-11-06 22:18:22,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 143 transitions, 477 flow [2023-11-06 22:18:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1358 transitions. [2023-11-06 22:18:22,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294346978557505 [2023-11-06 22:18:22,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1358 transitions. [2023-11-06 22:18:22,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1358 transitions. [2023-11-06 22:18:22,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:22,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1358 transitions. [2023-11-06 22:18:22,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.6666666666667) internal successors, (1358), 3 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:22,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:22,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:22,534 INFO L175 Difference]: Start difference. First operand has 112 places, 124 transitions, 253 flow. Second operand 3 states and 1358 transitions. [2023-11-06 22:18:22,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 143 transitions, 477 flow [2023-11-06 22:18:22,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 143 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:22,542 INFO L231 Difference]: Finished difference. Result has 108 places, 120 transitions, 255 flow [2023-11-06 22:18:22,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=855, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=108, PETRI_TRANSITIONS=120} [2023-11-06 22:18:22,544 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -24 predicate places. [2023-11-06 22:18:22,545 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 120 transitions, 255 flow [2023-11-06 22:18:22,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:22,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:22,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:18:22,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:18:22,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:22,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -487487823, now seen corresponding path program 1 times [2023-11-06 22:18:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:22,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100525021] [2023-11-06 22:18:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:22,667 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 22:18:22,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:22,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100525021] [2023-11-06 22:18:22,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100525021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:22,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:22,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:22,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940685577] [2023-11-06 22:18:22,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:22,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:22,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:22,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:22,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:22,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 855 [2023-11-06 22:18:22,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 120 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:22,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:22,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 855 [2023-11-06 22:18:22,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:25,245 INFO L124 PetriNetUnfolderBase]: 22231/35899 cut-off events. [2023-11-06 22:18:25,245 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2023-11-06 22:18:25,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64879 conditions, 35899 events. 22231/35899 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 291145 event pairs, 7428 based on Foata normal form. 0/26510 useless extension candidates. Maximal degree in co-relation 64875. Up to 28554 conditions per place. [2023-11-06 22:18:25,499 INFO L140 encePairwiseOnDemand]: 847/855 looper letters, 90 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2023-11-06 22:18:25,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 138 transitions, 477 flow [2023-11-06 22:18:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1358 transitions. [2023-11-06 22:18:25,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294346978557505 [2023-11-06 22:18:25,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1358 transitions. [2023-11-06 22:18:25,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1358 transitions. [2023-11-06 22:18:25,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:25,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1358 transitions. [2023-11-06 22:18:25,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.6666666666667) internal successors, (1358), 3 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:25,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:25,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:25,522 INFO L175 Difference]: Start difference. First operand has 108 places, 120 transitions, 255 flow. Second operand 3 states and 1358 transitions. [2023-11-06 22:18:25,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 138 transitions, 477 flow [2023-11-06 22:18:25,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 138 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:25,742 INFO L231 Difference]: Finished difference. Result has 105 places, 116 transitions, 257 flow [2023-11-06 22:18:25,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=855, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=105, PETRI_TRANSITIONS=116} [2023-11-06 22:18:25,744 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -27 predicate places. [2023-11-06 22:18:25,744 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 116 transitions, 257 flow [2023-11-06 22:18:25,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:25,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:25,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:25,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:18:25,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:25,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:25,747 INFO L85 PathProgramCache]: Analyzing trace with hash -290628673, now seen corresponding path program 1 times [2023-11-06 22:18:25,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:25,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606555834] [2023-11-06 22:18:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:25,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:25,836 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 22:18:25,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606555834] [2023-11-06 22:18:25,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606555834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:25,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:25,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:25,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035896360] [2023-11-06 22:18:25,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:25,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:25,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:25,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:25,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 855 [2023-11-06 22:18:25,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 116 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:25,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:25,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 855 [2023-11-06 22:18:25,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:28,694 INFO L124 PetriNetUnfolderBase]: 23557/36618 cut-off events. [2023-11-06 22:18:28,694 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-11-06 22:18:28,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67534 conditions, 36618 events. 23557/36618 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 270725 event pairs, 5543 based on Foata normal form. 0/26364 useless extension candidates. Maximal degree in co-relation 67529. Up to 30522 conditions per place. [2023-11-06 22:18:28,931 INFO L140 encePairwiseOnDemand]: 847/855 looper letters, 90 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-11-06 22:18:28,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 479 flow [2023-11-06 22:18:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1358 transitions. [2023-11-06 22:18:28,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294346978557505 [2023-11-06 22:18:28,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1358 transitions. [2023-11-06 22:18:28,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1358 transitions. [2023-11-06 22:18:28,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:28,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1358 transitions. [2023-11-06 22:18:28,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.6666666666667) internal successors, (1358), 3 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:28,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:28,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:28,972 INFO L175 Difference]: Start difference. First operand has 105 places, 116 transitions, 257 flow. Second operand 3 states and 1358 transitions. [2023-11-06 22:18:28,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 479 flow [2023-11-06 22:18:28,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 134 transitions, 479 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:28,978 INFO L231 Difference]: Finished difference. Result has 102 places, 112 transitions, 259 flow [2023-11-06 22:18:28,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=855, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=102, PETRI_TRANSITIONS=112} [2023-11-06 22:18:28,980 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -30 predicate places. [2023-11-06 22:18:28,981 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 112 transitions, 259 flow [2023-11-06 22:18:28,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:28,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:28,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:28,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:18:28,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:28,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:28,984 INFO L85 PathProgramCache]: Analyzing trace with hash -323784431, now seen corresponding path program 1 times [2023-11-06 22:18:28,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:28,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056639496] [2023-11-06 22:18:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:29,076 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 22:18:29,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:29,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056639496] [2023-11-06 22:18:29,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056639496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:29,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:29,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:29,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003072605] [2023-11-06 22:18:29,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:29,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:29,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:29,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 855 [2023-11-06 22:18:29,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 112 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:29,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:29,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 855 [2023-11-06 22:18:29,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:31,881 INFO L124 PetriNetUnfolderBase]: 20171/32838 cut-off events. [2023-11-06 22:18:31,881 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2023-11-06 22:18:31,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59343 conditions, 32838 events. 20171/32838 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 1514. Compared 265232 event pairs, 8448 based on Foata normal form. 0/23600 useless extension candidates. Maximal degree in co-relation 59337. Up to 17652 conditions per place. [2023-11-06 22:18:32,053 INFO L140 encePairwiseOnDemand]: 851/855 looper letters, 102 selfloop transitions, 3 changer transitions 0/154 dead transitions. [2023-11-06 22:18:32,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 154 transitions, 555 flow [2023-11-06 22:18:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1402 transitions. [2023-11-06 22:18:32,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546588693957115 [2023-11-06 22:18:32,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1402 transitions. [2023-11-06 22:18:32,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1402 transitions. [2023-11-06 22:18:32,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:32,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1402 transitions. [2023-11-06 22:18:32,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,076 INFO L175 Difference]: Start difference. First operand has 102 places, 112 transitions, 259 flow. Second operand 3 states and 1402 transitions. [2023-11-06 22:18:32,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 154 transitions, 555 flow [2023-11-06 22:18:32,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 154 transitions, 555 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:32,080 INFO L231 Difference]: Finished difference. Result has 106 places, 114 transitions, 281 flow [2023-11-06 22:18:32,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=855, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=106, PETRI_TRANSITIONS=114} [2023-11-06 22:18:32,081 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -26 predicate places. [2023-11-06 22:18:32,082 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 114 transitions, 281 flow [2023-11-06 22:18:32,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:32,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:32,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:18:32,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:32,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1447543322, now seen corresponding path program 1 times [2023-11-06 22:18:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:32,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450970032] [2023-11-06 22:18:32,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:32,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:32,149 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 22:18:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:32,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450970032] [2023-11-06 22:18:32,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450970032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:32,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:32,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933631697] [2023-11-06 22:18:32,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:32,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:32,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:32,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 433 out of 855 [2023-11-06 22:18:32,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 114 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:32,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 433 of 855 [2023-11-06 22:18:32,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:34,936 INFO L124 PetriNetUnfolderBase]: 20171/31498 cut-off events. [2023-11-06 22:18:34,936 INFO L125 PetriNetUnfolderBase]: For 3276/3276 co-relation queries the response was YES. [2023-11-06 22:18:35,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61263 conditions, 31498 events. 20171/31498 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 237213 event pairs, 10890 based on Foata normal form. 724/23626 useless extension candidates. Maximal degree in co-relation 61255. Up to 22514 conditions per place. [2023-11-06 22:18:35,109 INFO L140 encePairwiseOnDemand]: 849/855 looper letters, 99 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2023-11-06 22:18:35,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 153 transitions, 571 flow [2023-11-06 22:18:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1403 transitions. [2023-11-06 22:18:35,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469785575048733 [2023-11-06 22:18:35,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1403 transitions. [2023-11-06 22:18:35,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1403 transitions. [2023-11-06 22:18:35,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:35,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1403 transitions. [2023-11-06 22:18:35,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.6666666666667) internal successors, (1403), 3 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,133 INFO L175 Difference]: Start difference. First operand has 106 places, 114 transitions, 281 flow. Second operand 3 states and 1403 transitions. [2023-11-06 22:18:35,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 153 transitions, 571 flow [2023-11-06 22:18:35,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 153 transitions, 565 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:35,261 INFO L231 Difference]: Finished difference. Result has 105 places, 113 transitions, 285 flow [2023-11-06 22:18:35,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=855, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=105, PETRI_TRANSITIONS=113} [2023-11-06 22:18:35,265 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -27 predicate places. [2023-11-06 22:18:35,269 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 113 transitions, 285 flow [2023-11-06 22:18:35,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:35,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:35,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:18:35,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:35,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash -120835293, now seen corresponding path program 1 times [2023-11-06 22:18:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:35,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615849373] [2023-11-06 22:18:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:35,348 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 22:18:35,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:35,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615849373] [2023-11-06 22:18:35,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615849373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:35,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:35,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711349127] [2023-11-06 22:18:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:35,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:35,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:35,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 855 [2023-11-06 22:18:35,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 113 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:35,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 855 [2023-11-06 22:18:35,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:38,575 INFO L124 PetriNetUnfolderBase]: 22985/37582 cut-off events. [2023-11-06 22:18:38,575 INFO L125 PetriNetUnfolderBase]: For 6104/6104 co-relation queries the response was YES. [2023-11-06 22:18:38,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72889 conditions, 37582 events. 22985/37582 cut-off events. For 6104/6104 co-relation queries the response was YES. Maximal size of possible extension queue 1682. Compared 311029 event pairs, 9413 based on Foata normal form. 0/29151 useless extension candidates. Maximal degree in co-relation 72881. Up to 19197 conditions per place. [2023-11-06 22:18:38,744 INFO L140 encePairwiseOnDemand]: 851/855 looper letters, 106 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2023-11-06 22:18:38,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 157 transitions, 617 flow [2023-11-06 22:18:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1402 transitions. [2023-11-06 22:18:38,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546588693957115 [2023-11-06 22:18:38,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1402 transitions. [2023-11-06 22:18:38,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1402 transitions. [2023-11-06 22:18:38,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:38,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1402 transitions. [2023-11-06 22:18:38,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,762 INFO L175 Difference]: Start difference. First operand has 105 places, 113 transitions, 285 flow. Second operand 3 states and 1402 transitions. [2023-11-06 22:18:38,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 157 transitions, 617 flow [2023-11-06 22:18:38,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 157 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:38,839 INFO L231 Difference]: Finished difference. Result has 107 places, 115 transitions, 295 flow [2023-11-06 22:18:38,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=855, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=107, PETRI_TRANSITIONS=115} [2023-11-06 22:18:38,840 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -25 predicate places. [2023-11-06 22:18:38,841 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 115 transitions, 295 flow [2023-11-06 22:18:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:38,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:38,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:18:38,842 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:38,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2105435230, now seen corresponding path program 1 times [2023-11-06 22:18:38,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:38,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129348720] [2023-11-06 22:18:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:38,875 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 22:18:38,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:38,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129348720] [2023-11-06 22:18:38,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129348720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:38,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:38,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:38,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603002012] [2023-11-06 22:18:38,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:38,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:38,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:38,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:38,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 855 [2023-11-06 22:18:38,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 115 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 436.0) internal successors, (1308), 3 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:38,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 855 [2023-11-06 22:18:38,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:43,300 INFO L124 PetriNetUnfolderBase]: 33311/52598 cut-off events. [2023-11-06 22:18:43,300 INFO L125 PetriNetUnfolderBase]: For 8909/8909 co-relation queries the response was YES. [2023-11-06 22:18:43,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106421 conditions, 52598 events. 33311/52598 cut-off events. For 8909/8909 co-relation queries the response was YES. Maximal size of possible extension queue 2206. Compared 427723 event pairs, 14588 based on Foata normal form. 0/39106 useless extension candidates. Maximal degree in co-relation 106412. Up to 29992 conditions per place. [2023-11-06 22:18:43,590 INFO L140 encePairwiseOnDemand]: 851/855 looper letters, 115 selfloop transitions, 4 changer transitions 0/167 dead transitions. [2023-11-06 22:18:43,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 167 transitions, 665 flow [2023-11-06 22:18:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1415 transitions. [2023-11-06 22:18:43,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516569200779727 [2023-11-06 22:18:43,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1415 transitions. [2023-11-06 22:18:43,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1415 transitions. [2023-11-06 22:18:43,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:43,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1415 transitions. [2023-11-06 22:18:43,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 471.6666666666667) internal successors, (1415), 3 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,609 INFO L175 Difference]: Start difference. First operand has 107 places, 115 transitions, 295 flow. Second operand 3 states and 1415 transitions. [2023-11-06 22:18:43,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 167 transitions, 665 flow [2023-11-06 22:18:43,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 167 transitions, 653 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:43,711 INFO L231 Difference]: Finished difference. Result has 109 places, 118 transitions, 323 flow [2023-11-06 22:18:43,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=855, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=109, PETRI_TRANSITIONS=118} [2023-11-06 22:18:43,713 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -23 predicate places. [2023-11-06 22:18:43,713 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 118 transitions, 323 flow [2023-11-06 22:18:43,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.0) internal successors, (1308), 3 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:43,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:43,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:18:43,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:43,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash 548852832, now seen corresponding path program 1 times [2023-11-06 22:18:43,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:43,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698917219] [2023-11-06 22:18:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:43,762 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 22:18:43,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:43,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698917219] [2023-11-06 22:18:43,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698917219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:43,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:43,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:43,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944001616] [2023-11-06 22:18:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:43,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:43,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 855 [2023-11-06 22:18:43,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 118 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 434.6666666666667) internal successors, (1304), 3 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:43,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 855 [2023-11-06 22:18:43,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:48,194 INFO L124 PetriNetUnfolderBase]: 33311/51996 cut-off events. [2023-11-06 22:18:48,194 INFO L125 PetriNetUnfolderBase]: For 12935/12935 co-relation queries the response was YES. [2023-11-06 22:18:48,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108838 conditions, 51996 events. 33311/51996 cut-off events. For 12935/12935 co-relation queries the response was YES. Maximal size of possible extension queue 2191. Compared 414423 event pairs, 18216 based on Foata normal form. 1332/39776 useless extension candidates. Maximal degree in co-relation 108828. Up to 36492 conditions per place. [2023-11-06 22:18:48,731 INFO L140 encePairwiseOnDemand]: 849/855 looper letters, 109 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2023-11-06 22:18:48,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 162 transitions, 683 flow [2023-11-06 22:18:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1400 transitions. [2023-11-06 22:18:48,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458089668615984 [2023-11-06 22:18:48,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1400 transitions. [2023-11-06 22:18:48,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1400 transitions. [2023-11-06 22:18:48,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:48,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1400 transitions. [2023-11-06 22:18:48,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 466.6666666666667) internal successors, (1400), 3 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:48,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:48,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:48,748 INFO L175 Difference]: Start difference. First operand has 109 places, 118 transitions, 323 flow. Second operand 3 states and 1400 transitions. [2023-11-06 22:18:48,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 162 transitions, 683 flow [2023-11-06 22:18:48,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 162 transitions, 667 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:48,851 INFO L231 Difference]: Finished difference. Result has 108 places, 117 transitions, 325 flow [2023-11-06 22:18:48,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=855, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=325, PETRI_PLACES=108, PETRI_TRANSITIONS=117} [2023-11-06 22:18:48,853 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -24 predicate places. [2023-11-06 22:18:48,853 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 117 transitions, 325 flow [2023-11-06 22:18:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 434.6666666666667) internal successors, (1304), 3 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:48,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:48,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:48,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:18:48,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err6ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2023-11-06 22:18:48,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash -538968580, now seen corresponding path program 1 times [2023-11-06 22:18:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:48,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718765494] [2023-11-06 22:18:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:48,898 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 22:18:48,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718765494] [2023-11-06 22:18:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718765494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:48,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:48,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:48,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256834016] [2023-11-06 22:18:48,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:48,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:48,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:48,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:48,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 855 [2023-11-06 22:18:48,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 117 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 436.3333333333333) internal successors, (1309), 3 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:48,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:48,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 855 [2023-11-06 22:18:48,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:55,436 INFO L124 PetriNetUnfolderBase]: 49617/78276 cut-off events. [2023-11-06 22:18:55,436 INFO L125 PetriNetUnfolderBase]: For 18684/18684 co-relation queries the response was YES. [2023-11-06 22:18:55,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168752 conditions, 78276 events. 49617/78276 cut-off events. For 18684/18684 co-relation queries the response was YES. Maximal size of possible extension queue 3058. Compared 664483 event pairs, 21224 based on Foata normal form. 0/61711 useless extension candidates. Maximal degree in co-relation 168742. Up to 43244 conditions per place. [2023-11-06 22:18:56,191 INFO L140 encePairwiseOnDemand]: 851/855 looper letters, 121 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2023-11-06 22:18:56,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 172 transitions, 739 flow [2023-11-06 22:18:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1415 transitions. [2023-11-06 22:18:56,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516569200779727 [2023-11-06 22:18:56,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1415 transitions. [2023-11-06 22:18:56,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1415 transitions. [2023-11-06 22:18:56,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:56,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1415 transitions. [2023-11-06 22:18:56,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 471.6666666666667) internal successors, (1415), 3 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:56,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:56,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 855.0) internal successors, (3420), 4 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:56,211 INFO L175 Difference]: Start difference. First operand has 108 places, 117 transitions, 325 flow. Second operand 3 states and 1415 transitions. [2023-11-06 22:18:56,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 172 transitions, 739 flow