./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i --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_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/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_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/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_66c2b5bf-2d8f-443e-8247-def968ffd5e2/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 16b049fb81e05ec2192b5dc6cabf7c8b89c1486d4e623332a0a01a89383c6c7d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:18:33,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:18:33,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:18:33,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:18:33,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:18:33,900 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:18:33,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:18:33,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:18:33,903 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:18:33,904 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:18:33,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:18:33,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:18:33,906 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:18:33,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:18:33,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:18:33,909 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:18:33,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:18:33,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:18:33,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:18:33,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:18:33,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:18:33,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:18:33,914 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:18:33,915 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:18:33,916 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:18:33,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:18:33,917 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:18:33,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:18:33,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:18:33,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:18:33,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:33,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:18:33,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:18:33,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:18:33,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:18:33,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:18:33,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:18:33,924 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:18:33,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:18:33,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:18:33,926 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:18:33,927 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_66c2b5bf-2d8f-443e-8247-def968ffd5e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b049fb81e05ec2192b5dc6cabf7c8b89c1486d4e623332a0a01a89383c6c7d [2023-11-06 22:18:34,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:18:34,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:18:34,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:18:34,306 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:18:34,307 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:18:34,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i [2023-11-06 22:18:38,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:38,497 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:38,497 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i [2023-11-06 22:18:38,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/data/3632eb40f/56823351e1224c76be3589d3b9b5545a/FLAG9e3452ab3 [2023-11-06 22:18:38,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/data/3632eb40f/56823351e1224c76be3589d3b9b5545a [2023-11-06 22:18:38,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:38,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:38,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:38,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:38,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:38,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:38" (1/1) ... [2023-11-06 22:18:38,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0715e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:38, skipping insertion in model container [2023-11-06 22:18:38,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:38" (1/1) ... [2023-11-06 22:18:38,627 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:38,784 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:18:39,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:39,249 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:39,266 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:18:39,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:39,390 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:39,397 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:39,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39 WrapperNode [2023-11-06 22:18:39,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:39,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:39,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:39,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:39,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,540 INFO L138 Inliner]: procedures = 174, calls = 84, calls flagged for inlining = 20, calls inlined = 35, statements flattened = 873 [2023-11-06 22:18:39,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:39,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:39,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:39,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:39,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:39,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:39,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:39,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:39,798 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (1/1) ... [2023-11-06 22:18:39,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:39,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:39,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:39,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:18:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:18:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:18:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2023-11-06 22:18:39,883 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2023-11-06 22:18:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:18:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:18:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:18:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:18:39,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:18:39,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:39,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:39,888 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 22:18:40,107 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:40,109 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:41,856 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:41,883 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:41,883 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 22:18:41,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:41 BoogieIcfgContainer [2023-11-06 22:18:41,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:41,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:41,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:41,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:41,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:38" (1/3) ... [2023-11-06 22:18:41,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5e9632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:41, skipping insertion in model container [2023-11-06 22:18:41,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:39" (2/3) ... [2023-11-06 22:18:41,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5e9632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:41, skipping insertion in model container [2023-11-06 22:18:41,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:41" (3/3) ... [2023-11-06 22:18:41,913 INFO L112 eAbstractionObserver]: Analyzing ICFG one_time_barrier_2t.i [2023-11-06 22:18:41,930 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:18:41,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:41,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-11-06 22:18:41,945 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:18:42,261 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:18:42,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 955 places, 1041 transitions, 2089 flow [2023-11-06 22:18:43,349 INFO L124 PetriNetUnfolderBase]: 135/1540 cut-off events. [2023-11-06 22:18:43,350 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:18:43,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 1540 events. 135/1540 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 5806 event pairs, 0 based on Foata normal form. 0/1289 useless extension candidates. Maximal degree in co-relation 933. Up to 4 conditions per place. [2023-11-06 22:18:43,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 955 places, 1041 transitions, 2089 flow [2023-11-06 22:18:43,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 955 places, 1041 transitions, 2089 flow [2023-11-06 22:18:43,474 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:43,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 955 places, 1041 transitions, 2089 flow [2023-11-06 22:18:43,500 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 955 places, 1041 transitions, 2089 flow [2023-11-06 22:18:43,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 955 places, 1041 transitions, 2089 flow [2023-11-06 22:18:44,390 INFO L124 PetriNetUnfolderBase]: 135/1540 cut-off events. [2023-11-06 22:18:44,390 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:18:44,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 1540 events. 135/1540 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 5806 event pairs, 0 based on Foata normal form. 0/1289 useless extension candidates. Maximal degree in co-relation 933. Up to 4 conditions per place. [2023-11-06 22:18:44,601 INFO L119 LiptonReduction]: Number of co-enabled transitions 433290 [2023-11-06 22:19:25,590 WARN L293 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 102 DAG size of output: 97 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:19:33,861 WARN L293 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 102 DAG size of output: 97 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:19:47,160 WARN L293 SmtUtils]: Spent 10.62s on a formula simplification. DAG size of input: 125 DAG size of output: 123 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:20:02,645 WARN L293 SmtUtils]: Spent 13.69s on a formula simplification. DAG size of input: 140 DAG size of output: 132 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:20:05,346 INFO L134 LiptonReduction]: Checked pairs total: 2147736 [2023-11-06 22:20:05,346 INFO L136 LiptonReduction]: Total number of compositions: 789 [2023-11-06 22:20:05,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:20:05,371 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;@7903165, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:20:05,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 111 error locations. [2023-11-06 22:20:05,375 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:20:05,375 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:20:05,375 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:20:05,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:05,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:20:05,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2023-11-06 22:20:05,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash 118275, now seen corresponding path program 1 times [2023-11-06 22:20:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:05,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500563272] [2023-11-06 22:20:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:05,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:05,691 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 22:20:05,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:05,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500563272] [2023-11-06 22:20:05,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500563272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:05,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:05,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:20:05,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500548172] [2023-11-06 22:20:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:05,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:20:05,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:20:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:20:05,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 969 out of 1830 [2023-11-06 22:20:05,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 501 transitions, 1009 flow. Second operand has 2 states, 2 states have (on average 970.0) internal successors, (1940), 2 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:05,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:05,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 969 of 1830 [2023-11-06 22:20:05,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:10,762 INFO L124 PetriNetUnfolderBase]: 5423/19373 cut-off events. [2023-11-06 22:20:10,763 INFO L125 PetriNetUnfolderBase]: For 3/5 co-relation queries the response was YES. [2023-11-06 22:20:10,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29288 conditions, 19373 events. 5423/19373 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 188923 event pairs, 4284 based on Foata normal form. 1394/18535 useless extension candidates. Maximal degree in co-relation 28963. Up to 9910 conditions per place. [2023-11-06 22:20:10,891 INFO L140 encePairwiseOnDemand]: 1796/1830 looper letters, 154 selfloop transitions, 0 changer transitions 0/450 dead transitions. [2023-11-06 22:20:10,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 450 transitions, 1215 flow [2023-11-06 22:20:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:20:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:20:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2126 transitions. [2023-11-06 22:20:10,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808743169398907 [2023-11-06 22:20:10,917 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 2126 transitions. [2023-11-06 22:20:10,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 2126 transitions. [2023-11-06 22:20:10,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:10,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 2126 transitions. [2023-11-06 22:20:10,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1063.0) internal successors, (2126), 2 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:10,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1830.0) internal successors, (5490), 3 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:10,957 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1830.0) internal successors, (5490), 3 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:10,959 INFO L175 Difference]: Start difference. First operand has 456 places, 501 transitions, 1009 flow. Second operand 2 states and 2126 transitions. [2023-11-06 22:20:10,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 450 transitions, 1215 flow [2023-11-06 22:20:10,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 450 transitions, 1215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:10,980 INFO L231 Difference]: Finished difference. Result has 435 places, 450 transitions, 907 flow [2023-11-06 22:20:10,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1830, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=907, PETRI_PLACES=435, PETRI_TRANSITIONS=450} [2023-11-06 22:20:10,987 INFO L281 CegarLoopForPetriNet]: 456 programPoint places, -21 predicate places. [2023-11-06 22:20:10,988 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 450 transitions, 907 flow [2023-11-06 22:20:10,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 970.0) internal successors, (1940), 2 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:10,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:10,990 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:20:10,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:20:10,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2023-11-06 22:20:10,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:10,992 INFO L85 PathProgramCache]: Analyzing trace with hash 269051922, now seen corresponding path program 1 times [2023-11-06 22:20:10,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:10,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125789266] [2023-11-06 22:20:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:10,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:11,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:11,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125789266] [2023-11-06 22:20:11,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125789266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:11,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:11,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:11,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513184755] [2023-11-06 22:20:11,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:11,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:11,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:11,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 963 out of 1830 [2023-11-06 22:20:11,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 450 transitions, 907 flow. Second operand has 3 states, 3 states have (on average 964.6666666666666) internal successors, (2894), 3 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:11,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:11,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 963 of 1830 [2023-11-06 22:20:11,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:15,904 INFO L124 PetriNetUnfolderBase]: 5423/19374 cut-off events. [2023-11-06 22:20:15,905 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-11-06 22:20:15,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29291 conditions, 19374 events. 5423/19374 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 189121 event pairs, 4284 based on Foata normal form. 0/17142 useless extension candidates. Maximal degree in co-relation 29287. Up to 9910 conditions per place. [2023-11-06 22:20:16,017 INFO L140 encePairwiseOnDemand]: 1827/1830 looper letters, 153 selfloop transitions, 2 changer transitions 0/451 dead transitions. [2023-11-06 22:20:16,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 451 transitions, 1219 flow [2023-11-06 22:20:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:20:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3045 transitions. [2023-11-06 22:20:16,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546448087431693 [2023-11-06 22:20:16,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3045 transitions. [2023-11-06 22:20:16,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3045 transitions. [2023-11-06 22:20:16,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:16,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3045 transitions. [2023-11-06 22:20:16,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1015.0) internal successors, (3045), 3 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:16,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1830.0) internal successors, (7320), 4 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:16,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1830.0) internal successors, (7320), 4 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:16,073 INFO L175 Difference]: Start difference. First operand has 435 places, 450 transitions, 907 flow. Second operand 3 states and 3045 transitions. [2023-11-06 22:20:16,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 451 transitions, 1219 flow [2023-11-06 22:20:16,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 451 transitions, 1219 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:16,088 INFO L231 Difference]: Finished difference. Result has 438 places, 451 transitions, 919 flow [2023-11-06 22:20:16,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1830, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=919, PETRI_PLACES=438, PETRI_TRANSITIONS=451} [2023-11-06 22:20:16,091 INFO L281 CegarLoopForPetriNet]: 456 programPoint places, -18 predicate places. [2023-11-06 22:20:16,091 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 451 transitions, 919 flow [2023-11-06 22:20:16,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 964.6666666666666) internal successors, (2894), 3 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:16,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:16,094 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:16,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:20:16,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2023-11-06 22:20:16,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:16,099 INFO L85 PathProgramCache]: Analyzing trace with hash -598579808, now seen corresponding path program 1 times [2023-11-06 22:20:16,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:16,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857487744] [2023-11-06 22:20:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:16,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:16,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:16,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857487744] [2023-11-06 22:20:16,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857487744] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:16,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283069108] [2023-11-06 22:20:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:16,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:16,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:16,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:16,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:20:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:16,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:20:16,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:16,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:16,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283069108] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:16,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:16,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-11-06 22:20:16,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908329884] [2023-11-06 22:20:16,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:16,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:16,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:16,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:16,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 962 out of 1830 [2023-11-06 22:20:16,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 451 transitions, 919 flow. Second operand has 4 states, 4 states have (on average 963.5) internal successors, (3854), 4 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:16,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:16,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 962 of 1830 [2023-11-06 22:20:16,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:21,280 INFO L124 PetriNetUnfolderBase]: 5423/19375 cut-off events. [2023-11-06 22:20:21,281 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-11-06 22:20:21,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29301 conditions, 19375 events. 5423/19375 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 188779 event pairs, 4284 based on Foata normal form. 0/17143 useless extension candidates. Maximal degree in co-relation 29295. Up to 9910 conditions per place. [2023-11-06 22:20:21,393 INFO L140 encePairwiseOnDemand]: 1827/1830 looper letters, 153 selfloop transitions, 3 changer transitions 0/452 dead transitions. [2023-11-06 22:20:21,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 452 transitions, 1235 flow [2023-11-06 22:20:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:21,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4005 transitions. [2023-11-06 22:20:21,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471311475409836 [2023-11-06 22:20:21,411 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 4005 transitions. [2023-11-06 22:20:21,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 4005 transitions. [2023-11-06 22:20:21,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:21,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 4005 transitions. [2023-11-06 22:20:21,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 1001.25) internal successors, (4005), 4 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:21,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1830.0) internal successors, (9150), 5 states have internal predecessors, (9150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:21,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1830.0) internal successors, (9150), 5 states have internal predecessors, (9150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:21,461 INFO L175 Difference]: Start difference. First operand has 438 places, 451 transitions, 919 flow. Second operand 4 states and 4005 transitions. [2023-11-06 22:20:21,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 452 transitions, 1235 flow [2023-11-06 22:20:21,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 452 transitions, 1231 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:20:21,476 INFO L231 Difference]: Finished difference. Result has 441 places, 452 transitions, 931 flow [2023-11-06 22:20:21,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1830, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=931, PETRI_PLACES=441, PETRI_TRANSITIONS=452} [2023-11-06 22:20:21,479 INFO L281 CegarLoopForPetriNet]: 456 programPoint places, -15 predicate places. [2023-11-06 22:20:21,479 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 452 transitions, 931 flow [2023-11-06 22:20:21,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 963.5) internal successors, (3854), 4 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:21,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:21,483 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:20:21,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:21,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:21,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2023-11-06 22:20:21,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:21,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1725359662, now seen corresponding path program 2 times [2023-11-06 22:20:21,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:21,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980183268] [2023-11-06 22:20:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:21,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:21,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:21,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980183268] [2023-11-06 22:20:21,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980183268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:21,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737631653] [2023-11-06 22:20:21,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:20:21,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:21,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:21,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:21,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:20:22,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:20:22,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:20:22,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:20:22,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:22,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:22,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737631653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:22,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:22,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-06 22:20:22,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391884900] [2023-11-06 22:20:22,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:22,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:22,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 962 out of 1830 [2023-11-06 22:20:22,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 452 transitions, 931 flow. Second operand has 4 states, 4 states have (on average 963.75) internal successors, (3855), 4 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:22,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:22,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 962 of 1830 [2023-11-06 22:20:22,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:26,585 INFO L124 PetriNetUnfolderBase]: 5352/19927 cut-off events. [2023-11-06 22:20:26,585 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:20:26,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29723 conditions, 19927 events. 5352/19927 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 201140 event pairs, 0 based on Foata normal form. 0/17782 useless extension candidates. Maximal degree in co-relation 29716. Up to 9568 conditions per place. [2023-11-06 22:20:26,688 INFO L140 encePairwiseOnDemand]: 1826/1830 looper letters, 295 selfloop transitions, 4 changer transitions 0/594 dead transitions. [2023-11-06 22:20:26,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 594 transitions, 1812 flow [2023-11-06 22:20:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4146 transitions. [2023-11-06 22:20:26,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5663934426229508 [2023-11-06 22:20:26,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 4146 transitions. [2023-11-06 22:20:26,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 4146 transitions. [2023-11-06 22:20:26,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:26,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 4146 transitions. [2023-11-06 22:20:26,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 1036.5) internal successors, (4146), 4 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:26,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1830.0) internal successors, (9150), 5 states have internal predecessors, (9150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:26,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1830.0) internal successors, (9150), 5 states have internal predecessors, (9150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:26,748 INFO L175 Difference]: Start difference. First operand has 441 places, 452 transitions, 931 flow. Second operand 4 states and 4146 transitions. [2023-11-06 22:20:26,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 594 transitions, 1812 flow [2023-11-06 22:20:26,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 594 transitions, 1800 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 22:20:26,765 INFO L231 Difference]: Finished difference. Result has 440 places, 452 transitions, 930 flow [2023-11-06 22:20:26,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1830, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=930, PETRI_PLACES=440, PETRI_TRANSITIONS=452} [2023-11-06 22:20:26,767 INFO L281 CegarLoopForPetriNet]: 456 programPoint places, -16 predicate places. [2023-11-06 22:20:26,768 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 452 transitions, 930 flow [2023-11-06 22:20:26,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 963.75) internal successors, (3855), 4 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:26,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:26,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:26,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:26,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2b5bf-2d8f-443e-8247-def968ffd5e2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:26,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2023-11-06 22:20:26,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:26,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1271753210, now seen corresponding path program 1 times [2023-11-06 22:20:26,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:26,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23309287] [2023-11-06 22:20:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:26,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:27,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:27,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23309287] [2023-11-06 22:20:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23309287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:27,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885597109] [2023-11-06 22:20:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:27,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:27,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:27,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:27,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 963 out of 1830 [2023-11-06 22:20:27,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 452 transitions, 930 flow. Second operand has 3 states, 3 states have (on average 964.3333333333334) internal successors, (2893), 3 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:27,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:27,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 963 of 1830 [2023-11-06 22:20:27,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:31,457 INFO L124 PetriNetUnfolderBase]: 5343/19715 cut-off events. [2023-11-06 22:20:31,457 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2023-11-06 22:20:31,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29630 conditions, 19715 events. 5343/19715 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 197663 event pairs, 0 based on Foata normal form. 1/17577 useless extension candidates. Maximal degree in co-relation 29623. Up to 9634 conditions per place. [2023-11-06 22:20:31,572 INFO L140 encePairwiseOnDemand]: 1827/1830 looper letters, 225 selfloop transitions, 2 changer transitions 0/522 dead transitions. [2023-11-06 22:20:31,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 522 transitions, 1522 flow [2023-11-06 22:20:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:20:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3115 transitions. [2023-11-06 22:20:31,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673952641165756 [2023-11-06 22:20:31,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3115 transitions. [2023-11-06 22:20:31,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3115 transitions. [2023-11-06 22:20:31,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:31,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3115 transitions. [2023-11-06 22:20:31,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1038.3333333333333) internal successors, (3115), 3 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:31,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1830.0) internal successors, (7320), 4 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:31,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1830.0) internal successors, (7320), 4 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:31,618 INFO L175 Difference]: Start difference. First operand has 440 places, 452 transitions, 930 flow. Second operand 3 states and 3115 transitions. [2023-11-06 22:20:31,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 522 transitions, 1522 flow [2023-11-06 22:20:31,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 522 transitions, 1518 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:31,633 INFO L231 Difference]: Finished difference. Result has 440 places, 451 transitions, 926 flow [2023-11-06 22:20:31,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1830, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=926, PETRI_PLACES=440, PETRI_TRANSITIONS=451} [2023-11-06 22:20:31,638 INFO L281 CegarLoopForPetriNet]: 456 programPoint places, -16 predicate places. [2023-11-06 22:20:31,638 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 451 transitions, 926 flow [2023-11-06 22:20:31,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 964.3333333333334) internal successors, (2893), 3 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:31,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:31,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:31,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:20:31,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting worker_fnErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2023-11-06 22:20:31,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2020082790, now seen corresponding path program 1 times [2023-11-06 22:20:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436428232] [2023-11-06 22:20:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436428232] [2023-11-06 22:20:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436428232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:32,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:32,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:20:32,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442403345] [2023-11-06 22:20:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:32,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:20:32,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:32,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:20:32,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:20:35,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 916 out of 1830 [2023-11-06 22:20:35,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 451 transitions, 926 flow. Second operand has 6 states, 6 states have (on average 917.8333333333334) internal successors, (5507), 6 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:35,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:35,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 916 of 1830 [2023-11-06 22:20:35,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:40,808 INFO L124 PetriNetUnfolderBase]: 7724/24930 cut-off events. [2023-11-06 22:20:40,808 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-11-06 22:20:40,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39420 conditions, 24930 events. 7724/24930 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 240143 event pairs, 5458 based on Foata normal form. 0/22209 useless extension candidates. Maximal degree in co-relation 39413. Up to 13285 conditions per place. [2023-11-06 22:20:40,931 INFO L140 encePairwiseOnDemand]: 1810/1830 looper letters, 464 selfloop transitions, 58 changer transitions 0/793 dead transitions. [2023-11-06 22:20:40,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 793 transitions, 2678 flow [2023-11-06 22:20:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:20:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:20:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6017 transitions. [2023-11-06 22:20:40,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479963570127504 [2023-11-06 22:20:40,954 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 6017 transitions. [2023-11-06 22:20:40,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6017 transitions. [2023-11-06 22:20:40,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:40,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 6017 transitions. [2023-11-06 22:20:40,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 1002.8333333333334) internal successors, (6017), 6 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:40,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1830.0) internal successors, (12810), 7 states have internal predecessors, (12810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:41,001 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1830.0) internal successors, (12810), 7 states have internal predecessors, (12810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:41,002 INFO L175 Difference]: Start difference. First operand has 440 places, 451 transitions, 926 flow. Second operand 6 states and 6017 transitions. [2023-11-06 22:20:41,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 793 transitions, 2678 flow [2023-11-06 22:20:41,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 793 transitions, 2666 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:41,020 INFO L231 Difference]: Finished difference. Result has 448 places, 508 transitions, 1306 flow [2023-11-06 22:20:41,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1830, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1306, PETRI_PLACES=448, PETRI_TRANSITIONS=508} [2023-11-06 22:20:41,024 INFO L281 CegarLoopForPetriNet]: 456 programPoint places, -8 predicate places. [2023-11-06 22:20:41,024 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 508 transitions, 1306 flow [2023-11-06 22:20:41,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 917.8333333333334) internal successors, (5507), 6 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:41,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:41,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:41,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:20:41,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2023-11-06 22:20:41,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:41,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2000535882, now seen corresponding path program 1 times [2023-11-06 22:20:41,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:41,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717613528] [2023-11-06 22:20:41,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:41,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:20:41,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:41,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717613528] [2023-11-06 22:20:41,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717613528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:41,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:41,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:20:41,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648384705] [2023-11-06 22:20:41,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:41,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:20:41,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:41,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:20:41,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:20:45,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 914 out of 1830 [2023-11-06 22:20:45,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 508 transitions, 1306 flow. Second operand has 6 states, 6 states have (on average 916.0) internal successors, (5496), 6 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:45,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:45,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 914 of 1830 [2023-11-06 22:20:45,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:51,485 INFO L124 PetriNetUnfolderBase]: 8061/26483 cut-off events. [2023-11-06 22:20:51,485 INFO L125 PetriNetUnfolderBase]: For 1552/1654 co-relation queries the response was YES. [2023-11-06 22:20:51,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43474 conditions, 26483 events. 8061/26483 cut-off events. For 1552/1654 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 258450 event pairs, 5445 based on Foata normal form. 45/23711 useless extension candidates. Maximal degree in co-relation 43463. Up to 14023 conditions per place. [2023-11-06 22:20:51,650 INFO L140 encePairwiseOnDemand]: 1810/1830 looper letters, 506 selfloop transitions, 62 changer transitions 0/842 dead transitions. [2023-11-06 22:20:51,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 842 transitions, 3136 flow [2023-11-06 22:20:51,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:20:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:20:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5997 transitions. [2023-11-06 22:20:51,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461748633879782 [2023-11-06 22:20:51,678 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5997 transitions. [2023-11-06 22:20:51,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5997 transitions. [2023-11-06 22:20:51,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:51,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5997 transitions. [2023-11-06 22:20:51,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 999.5) internal successors, (5997), 6 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:51,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1830.0) internal successors, (12810), 7 states have internal predecessors, (12810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:51,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1830.0) internal successors, (12810), 7 states have internal predecessors, (12810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:51,729 INFO L175 Difference]: Start difference. First operand has 448 places, 508 transitions, 1306 flow. Second operand 6 states and 5997 transitions. [2023-11-06 22:20:51,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 842 transitions, 3136 flow [2023-11-06 22:20:51,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 842 transitions, 3136 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:51,759 INFO L231 Difference]: Finished difference. Result has 458 places, 565 transitions, 1724 flow [2023-11-06 22:20:51,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1830, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1724, PETRI_PLACES=458, PETRI_TRANSITIONS=565} [2023-11-06 22:20:51,761 INFO L281 CegarLoopForPetriNet]: 456 programPoint places, 2 predicate places. [2023-11-06 22:20:51,762 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 565 transitions, 1724 flow [2023-11-06 22:20:51,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 916.0) internal successors, (5496), 6 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:51,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:51,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:51,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:20:51,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting worker_fnErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2023-11-06 22:20:51,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash -768320436, now seen corresponding path program 1 times [2023-11-06 22:20:51,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:51,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461403218] [2023-11-06 22:20:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:51,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461403218] [2023-11-06 22:20:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461403218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:52,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:52,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785130701] [2023-11-06 22:20:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:52,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 1830 [2023-11-06 22:20:52,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 565 transitions, 1724 flow. Second operand has 3 states, 3 states have (on average 759.6666666666666) internal successors, (2279), 3 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:52,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:52,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 1830 [2023-11-06 22:20:52,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:07,795 INFO L124 PetriNetUnfolderBase]: 29025/65908 cut-off events. [2023-11-06 22:21:07,795 INFO L125 PetriNetUnfolderBase]: For 10372/10646 co-relation queries the response was YES. [2023-11-06 22:21:08,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131658 conditions, 65908 events. 29025/65908 cut-off events. For 10372/10646 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 558304 event pairs, 24211 based on Foata normal form. 6/60565 useless extension candidates. Maximal degree in co-relation 131642. Up to 55233 conditions per place. [2023-11-06 22:21:08,260 INFO L140 encePairwiseOnDemand]: 1730/1830 looper letters, 517 selfloop transitions, 105 changer transitions 0/735 dead transitions. [2023-11-06 22:21:08,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 735 transitions, 3360 flow [2023-11-06 22:21:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2771 transitions. [2023-11-06 22:21:08,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504735883424408 [2023-11-06 22:21:08,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2771 transitions. [2023-11-06 22:21:08,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2771 transitions. [2023-11-06 22:21:08,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:08,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2771 transitions. [2023-11-06 22:21:08,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 923.6666666666666) internal successors, (2771), 3 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:08,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1830.0) internal successors, (7320), 4 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:08,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1830.0) internal successors, (7320), 4 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:08,297 INFO L175 Difference]: Start difference. First operand has 458 places, 565 transitions, 1724 flow. Second operand 3 states and 2771 transitions. [2023-11-06 22:21:08,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 735 transitions, 3360 flow [2023-11-06 22:21:08,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 735 transitions, 3360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:21:08,332 INFO L231 Difference]: Finished difference. Result has 461 places, 664 transitions, 2481 flow [2023-11-06 22:21:08,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1830, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2481, PETRI_PLACES=461, PETRI_TRANSITIONS=664} [2023-11-06 22:21:08,335 INFO L281 CegarLoopForPetriNet]: 456 programPoint places, 5 predicate places. [2023-11-06 22:21:08,338 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 664 transitions, 2481 flow [2023-11-06 22:21:08,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 759.6666666666666) internal successors, (2279), 3 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:08,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:08,339 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:08,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:21:08,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2023-11-06 22:21:08,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:08,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1036229577, now seen corresponding path program 1 times [2023-11-06 22:21:08,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:08,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084732269] [2023-11-06 22:21:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:08,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:21:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:08,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084732269] [2023-11-06 22:21:08,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084732269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:08,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:08,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682090901] [2023-11-06 22:21:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:08,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:08,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:08,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:09,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 753 out of 1830 [2023-11-06 22:21:09,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 664 transitions, 2481 flow. Second operand has 3 states, 3 states have (on average 758.0) internal successors, (2274), 3 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:09,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:09,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 753 of 1830 [2023-11-06 22:21:09,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand