./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro --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 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:39:51,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:39:51,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:39:51,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:39:51,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:39:51,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:39:51,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:39:51,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:39:51,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:39:51,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:39:51,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:39:51,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:39:51,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:39:51,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:39:51,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:39:51,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:39:51,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:39:51,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:39:51,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:39:51,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:39:51,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:39:51,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:39:51,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:39:51,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:39:51,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:39:51,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:39:51,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:39:51,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:39:51,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:39:51,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:39:51,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:39:51,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:39:51,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:39:51,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:39:51,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:39:51,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:39:51,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:39:51,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:39:51,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:39:51,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:39:51,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:39:51,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:39:52,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:39:52,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:39:52,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:39:52,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:39:52,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:39:52,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:39:52,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:39:52,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:39:52,061 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:39:52,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:39:52,063 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:39:52,064 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:39:52,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:39:52,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:39:52,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:39:52,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:39:52,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:39:52,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:39:52,065 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:39:52,066 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:39:52,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:39:52,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:39:52,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:39:52,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:39:52,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:39:52,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:39:52,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:52,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:39:52,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:39:52,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:39:52,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:39:52,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:39:52,072 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:39:52,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:39:52,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:39:52,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2022-11-18 20:39:52,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:39:52,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:39:52,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:39:52,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:39:52,491 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:39:52,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-11-18 20:39:52,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/data/79f135d7c/96fabb4430784e11b6550b36b394234f/FLAG20399b54a [2022-11-18 20:39:53,358 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:39:53,359 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-11-18 20:39:53,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/data/79f135d7c/96fabb4430784e11b6550b36b394234f/FLAG20399b54a [2022-11-18 20:39:53,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/data/79f135d7c/96fabb4430784e11b6550b36b394234f [2022-11-18 20:39:53,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:39:53,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:39:53,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:53,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:39:53,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:39:53,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:53" (1/1) ... [2022-11-18 20:39:53,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c8b0ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:53, skipping insertion in model container [2022-11-18 20:39:53,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:53" (1/1) ... [2022-11-18 20:39:53,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:39:53,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:39:54,358 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2022-11-18 20:39:54,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:54,446 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:39:54,518 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2022-11-18 20:39:54,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:54,634 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:39:54,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54 WrapperNode [2022-11-18 20:39:54,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:54,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:54,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:39:54,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:39:54,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,753 INFO L138 Inliner]: procedures = 271, calls = 31, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 256 [2022-11-18 20:39:54,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:54,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:39:54,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:39:54,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:39:54,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,826 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:39:54,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:39:54,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:39:54,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:39:54,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (1/1) ... [2022-11-18 20:39:54,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:54,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:54,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:39:54,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:39:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:39:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:39:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:39:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:39:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:39:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:39:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:39:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:39:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:39:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:39:54,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:39:54,947 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:39:55,251 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:39:55,254 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:39:55,962 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:39:55,974 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:39:55,975 INFO L300 CfgBuilder]: Removed 25 assume(true) statements. [2022-11-18 20:39:55,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:55 BoogieIcfgContainer [2022-11-18 20:39:55,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:39:55,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:39:55,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:39:55,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:39:55,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:39:53" (1/3) ... [2022-11-18 20:39:55,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cbfb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:55, skipping insertion in model container [2022-11-18 20:39:55,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:54" (2/3) ... [2022-11-18 20:39:55,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cbfb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:55, skipping insertion in model container [2022-11-18 20:39:55,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:55" (3/3) ... [2022-11-18 20:39:55,991 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2022-11-18 20:39:56,009 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:39:56,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:39:56,060 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-18 20:39:56,060 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:39:56,220 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:39:56,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 272 transitions, 552 flow [2022-11-18 20:39:56,540 INFO L130 PetriNetUnfolder]: 49/395 cut-off events. [2022-11-18 20:39:56,540 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:39:56,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 395 events. 49/395 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1697 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-18 20:39:56,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 272 transitions, 552 flow [2022-11-18 20:39:56,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 272 transitions, 552 flow [2022-11-18 20:39:56,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:39:56,592 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;@367c4459, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:39:56,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:39:56,607 INFO L130 PetriNetUnfolder]: 7/80 cut-off events. [2022-11-18 20:39:56,608 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:39:56,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:56,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:56,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:39:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash -76518702, now seen corresponding path program 1 times [2022-11-18 20:39:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:56,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365887236] [2022-11-18 20:39:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:56,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:57,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:57,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365887236] [2022-11-18 20:39:57,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365887236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:57,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:57,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:39:57,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111686850] [2022-11-18 20:39:57,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:57,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:39:57,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:39:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:39:57,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 272 [2022-11-18 20:39:57,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 272 transitions, 552 flow. Second operand has 2 states, 2 states have (on average 242.5) internal successors, (485), 2 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:57,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 272 [2022-11-18 20:39:57,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:57,292 INFO L130 PetriNetUnfolder]: 8/351 cut-off events. [2022-11-18 20:39:57,293 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:39:57,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 351 events. 8/351 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1230 event pairs, 0 based on Foata normal form. 41/361 useless extension candidates. Maximal degree in co-relation 206. Up to 4 conditions per place. [2022-11-18 20:39:57,301 INFO L137 encePairwiseOnDemand]: 245/272 looper letters, 2 selfloop transitions, 0 changer transitions 0/243 dead transitions. [2022-11-18 20:39:57,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 498 flow [2022-11-18 20:39:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:39:57,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:39:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 511 transitions. [2022-11-18 20:39:57,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9393382352941176 [2022-11-18 20:39:57,337 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 511 transitions. [2022-11-18 20:39:57,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 511 transitions. [2022-11-18 20:39:57,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:57,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 511 transitions. [2022-11-18 20:39:57,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,379 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,382 INFO L175 Difference]: Start difference. First operand has 242 places, 272 transitions, 552 flow. Second operand 2 states and 511 transitions. [2022-11-18 20:39:57,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 498 flow [2022-11-18 20:39:57,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:39:57,403 INFO L231 Difference]: Finished difference. Result has 241 places, 243 transitions, 494 flow [2022-11-18 20:39:57,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=494, PETRI_PLACES=241, PETRI_TRANSITIONS=243} [2022-11-18 20:39:57,421 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, -1 predicate places. [2022-11-18 20:39:57,422 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 243 transitions, 494 flow [2022-11-18 20:39:57,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.5) internal successors, (485), 2 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:57,424 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:57,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:39:57,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:39:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2121594581, now seen corresponding path program 1 times [2022-11-18 20:39:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:57,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22648778] [2022-11-18 20:39:57,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:57,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:57,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:57,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22648778] [2022-11-18 20:39:57,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22648778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:57,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:57,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:39:57,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548879011] [2022-11-18 20:39:57,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:57,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:39:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:57,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:39:57,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:39:57,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 272 [2022-11-18 20:39:57,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 243 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:57,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 272 [2022-11-18 20:39:57,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:57,787 INFO L130 PetriNetUnfolder]: 8/355 cut-off events. [2022-11-18 20:39:57,788 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:39:57,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 355 events. 8/355 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1231 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 372. Up to 10 conditions per place. [2022-11-18 20:39:57,794 INFO L137 encePairwiseOnDemand]: 269/272 looper letters, 11 selfloop transitions, 2 changer transitions 0/247 dead transitions. [2022-11-18 20:39:57,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 247 transitions, 528 flow [2022-11-18 20:39:57,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:39:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:39:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2022-11-18 20:39:57,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-11-18 20:39:57,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2022-11-18 20:39:57,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2022-11-18 20:39:57,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:57,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2022-11-18 20:39:57,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,810 INFO L175 Difference]: Start difference. First operand has 241 places, 243 transitions, 494 flow. Second operand 3 states and 716 transitions. [2022-11-18 20:39:57,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 247 transitions, 528 flow [2022-11-18 20:39:57,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 247 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:39:57,825 INFO L231 Difference]: Finished difference. Result has 244 places, 244 transitions, 506 flow [2022-11-18 20:39:57,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=244, PETRI_TRANSITIONS=244} [2022-11-18 20:39:57,827 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 2 predicate places. [2022-11-18 20:39:57,828 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 244 transitions, 506 flow [2022-11-18 20:39:57,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:57,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:57,830 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:57,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:39:57,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:39:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash -414816919, now seen corresponding path program 1 times [2022-11-18 20:39:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:57,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515820020] [2022-11-18 20:39:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:57,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:58,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:58,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515820020] [2022-11-18 20:39:58,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515820020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:58,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494184657] [2022-11-18 20:39:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:58,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:58,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:58,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:58,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:39:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:58,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:39:58,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:58,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:39:58,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494184657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:58,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:39:58,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 20:39:58,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983844845] [2022-11-18 20:39:58,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:58,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:39:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:39:58,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:58,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 272 [2022-11-18 20:39:58,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 244 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:58,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 272 [2022-11-18 20:39:58,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:58,396 INFO L130 PetriNetUnfolder]: 5/266 cut-off events. [2022-11-18 20:39:58,396 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:39:58,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 266 events. 5/266 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 715 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 286. Up to 7 conditions per place. [2022-11-18 20:39:58,400 INFO L137 encePairwiseOnDemand]: 269/272 looper letters, 9 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2022-11-18 20:39:58,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 246 transitions, 532 flow [2022-11-18 20:39:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:39:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:39:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-11-18 20:39:58,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-18 20:39:58,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-11-18 20:39:58,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-11-18 20:39:58,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:58,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-11-18 20:39:58,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,411 INFO L175 Difference]: Start difference. First operand has 244 places, 244 transitions, 506 flow. Second operand 3 states and 714 transitions. [2022-11-18 20:39:58,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 246 transitions, 532 flow [2022-11-18 20:39:58,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 246 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:39:58,416 INFO L231 Difference]: Finished difference. Result has 246 places, 244 transitions, 512 flow [2022-11-18 20:39:58,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=246, PETRI_TRANSITIONS=244} [2022-11-18 20:39:58,420 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 4 predicate places. [2022-11-18 20:39:58,420 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 244 transitions, 512 flow [2022-11-18 20:39:58,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:58,421 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:58,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:39:58,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:58,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:39:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash -164829376, now seen corresponding path program 1 times [2022-11-18 20:39:58,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:58,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13254694] [2022-11-18 20:39:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:58,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:39:58,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13254694] [2022-11-18 20:39:58,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13254694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88573539] [2022-11-18 20:39:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:58,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:58,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:58,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:58,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:39:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:58,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:39:58,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:39:59,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:39:59,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88573539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:59,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:59,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:39:59,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337411331] [2022-11-18 20:39:59,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:59,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:39:59,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:59,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:39:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:59,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-18 20:39:59,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 244 transitions, 512 flow. Second operand has 10 states, 10 states have (on average 235.1) internal successors, (2351), 10 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:59,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-18 20:39:59,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:59,437 INFO L130 PetriNetUnfolder]: 5/273 cut-off events. [2022-11-18 20:39:59,438 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 20:39:59,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 273 events. 5/273 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 698 event pairs, 0 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 307. Up to 7 conditions per place. [2022-11-18 20:39:59,442 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 12 selfloop transitions, 9 changer transitions 0/254 dead transitions. [2022-11-18 20:39:59,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 254 transitions, 576 flow [2022-11-18 20:39:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:39:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:39:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2120 transitions. [2022-11-18 20:39:59,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8660130718954249 [2022-11-18 20:39:59,451 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2120 transitions. [2022-11-18 20:39:59,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2120 transitions. [2022-11-18 20:39:59,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:59,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2120 transitions. [2022-11-18 20:39:59,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.55555555555554) internal successors, (2120), 9 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 272.0) internal successors, (2720), 10 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,470 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 272.0) internal successors, (2720), 10 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,470 INFO L175 Difference]: Start difference. First operand has 246 places, 244 transitions, 512 flow. Second operand 9 states and 2120 transitions. [2022-11-18 20:39:59,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 254 transitions, 576 flow [2022-11-18 20:39:59,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 254 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:39:59,481 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 558 flow [2022-11-18 20:39:59,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=255, PETRI_TRANSITIONS=250} [2022-11-18 20:39:59,484 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 13 predicate places. [2022-11-18 20:39:59,484 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 558 flow [2022-11-18 20:39:59,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 235.1) internal successors, (2351), 10 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:59,488 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:59,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:59,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:59,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:39:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:59,696 INFO L85 PathProgramCache]: Analyzing trace with hash 320797376, now seen corresponding path program 2 times [2022-11-18 20:39:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:59,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020764340] [2022-11-18 20:39:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:59,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:40:00,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:00,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020764340] [2022-11-18 20:40:00,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020764340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974823052] [2022-11-18 20:40:00,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:40:00,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:00,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:00,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:00,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:40:00,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:40:00,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:00,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:40:00,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:40:00,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:40:00,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974823052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:00,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:00,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:40:00,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669840798] [2022-11-18 20:40:00,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:00,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:40:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:00,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:40:00,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:40:00,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-18 20:40:00,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 250 transitions, 558 flow. Second operand has 18 states, 18 states have (on average 235.27777777777777) internal successors, (4235), 18 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:00,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-18 20:40:00,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:00,859 INFO L130 PetriNetUnfolder]: 5/293 cut-off events. [2022-11-18 20:40:00,859 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-18 20:40:00,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 293 events. 5/293 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 696 event pairs, 0 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 393. Up to 11 conditions per place. [2022-11-18 20:40:00,865 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 20 selfloop transitions, 21 changer transitions 0/274 dead transitions. [2022-11-18 20:40:00,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 274 transitions, 748 flow [2022-11-18 20:40:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:40:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:40:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4938 transitions. [2022-11-18 20:40:00,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644957983193278 [2022-11-18 20:40:00,881 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4938 transitions. [2022-11-18 20:40:00,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4938 transitions. [2022-11-18 20:40:00,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:00,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4938 transitions. [2022-11-18 20:40:00,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.14285714285714) internal successors, (4938), 21 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 272.0) internal successors, (5984), 22 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,920 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 272.0) internal successors, (5984), 22 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,921 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 558 flow. Second operand 21 states and 4938 transitions. [2022-11-18 20:40:00,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 274 transitions, 748 flow [2022-11-18 20:40:00,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 274 transitions, 734 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:00,932 INFO L231 Difference]: Finished difference. Result has 279 places, 263 transitions, 682 flow [2022-11-18 20:40:00,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=682, PETRI_PLACES=279, PETRI_TRANSITIONS=263} [2022-11-18 20:40:00,936 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 37 predicate places. [2022-11-18 20:40:00,937 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 263 transitions, 682 flow [2022-11-18 20:40:00,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 235.27777777777777) internal successors, (4235), 18 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:00,940 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:00,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:01,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:01,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:40:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1809056192, now seen corresponding path program 3 times [2022-11-18 20:40:01,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:01,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011009061] [2022-11-18 20:40:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:01,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:40:01,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:01,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011009061] [2022-11-18 20:40:01,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011009061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:01,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622579200] [2022-11-18 20:40:01,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:40:01,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:01,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:01,661 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:01,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:40:01,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 20:40:01,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:01,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:40:01,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:40:02,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:40:02,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622579200] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:02,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:02,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:40:02,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575436106] [2022-11-18 20:40:02,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:02,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:40:02,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:02,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:40:02,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:40:02,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-18 20:40:02,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 263 transitions, 682 flow. Second operand has 23 states, 23 states have (on average 235.43478260869566) internal successors, (5415), 23 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:02,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:02,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-18 20:40:02,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:03,048 INFO L130 PetriNetUnfolder]: 5/308 cut-off events. [2022-11-18 20:40:03,049 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-18 20:40:03,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 308 events. 5/308 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 697 event pairs, 0 based on Foata normal form. 3/291 useless extension candidates. Maximal degree in co-relation 489. Up to 17 conditions per place. [2022-11-18 20:40:03,054 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 26 selfloop transitions, 30 changer transitions 0/289 dead transitions. [2022-11-18 20:40:03,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 289 transitions, 940 flow [2022-11-18 20:40:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:40:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:40:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7049 transitions. [2022-11-18 20:40:03,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638480392156863 [2022-11-18 20:40:03,075 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7049 transitions. [2022-11-18 20:40:03,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7049 transitions. [2022-11-18 20:40:03,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:03,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7049 transitions. [2022-11-18 20:40:03,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 234.96666666666667) internal successors, (7049), 30 states have internal predecessors, (7049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 272.0) internal successors, (8432), 31 states have internal predecessors, (8432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,141 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 272.0) internal successors, (8432), 31 states have internal predecessors, (8432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,142 INFO L175 Difference]: Start difference. First operand has 279 places, 263 transitions, 682 flow. Second operand 30 states and 7049 transitions. [2022-11-18 20:40:03,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 289 transitions, 940 flow [2022-11-18 20:40:03,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 289 transitions, 910 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-18 20:40:03,165 INFO L231 Difference]: Finished difference. Result has 306 places, 273 transitions, 810 flow [2022-11-18 20:40:03,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=810, PETRI_PLACES=306, PETRI_TRANSITIONS=273} [2022-11-18 20:40:03,167 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 64 predicate places. [2022-11-18 20:40:03,167 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 273 transitions, 810 flow [2022-11-18 20:40:03,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 235.43478260869566) internal successors, (5415), 23 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:03,171 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:03,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:03,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:40:03,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:40:03,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:03,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1665880364, now seen corresponding path program 4 times [2022-11-18 20:40:03,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:03,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521206670] [2022-11-18 20:40:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:03,429 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:40:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:03,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:40:03,508 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:40:03,510 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 20:40:03,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-18 20:40:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-18 20:40:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-18 20:40:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-18 20:40:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-18 20:40:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-18 20:40:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-18 20:40:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-18 20:40:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-18 20:40:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-18 20:40:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-18 20:40:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-18 20:40:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-18 20:40:03,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-18 20:40:03,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-18 20:40:03,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-18 20:40:03,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:40:03,523 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-18 20:40:03,526 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:40:03,526 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:40:03,650 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:40:03,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 378 transitions, 774 flow [2022-11-18 20:40:03,824 INFO L130 PetriNetUnfolder]: 82/655 cut-off events. [2022-11-18 20:40:03,824 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:40:03,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 655 events. 82/655 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3460 event pairs, 0 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 397. Up to 12 conditions per place. [2022-11-18 20:40:03,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 378 transitions, 774 flow [2022-11-18 20:40:03,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 378 transitions, 774 flow [2022-11-18 20:40:03,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:40:03,859 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;@367c4459, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:40:03,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-18 20:40:03,868 INFO L130 PetriNetUnfolder]: 7/80 cut-off events. [2022-11-18 20:40:03,868 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:40:03,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:03,869 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:03,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:40:03,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:03,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1394410350, now seen corresponding path program 1 times [2022-11-18 20:40:03,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:03,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057060495] [2022-11-18 20:40:03,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:03,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:03,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:03,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057060495] [2022-11-18 20:40:03,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057060495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:03,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:03,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:40:03,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637969086] [2022-11-18 20:40:03,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:03,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:40:03,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:03,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:40:03,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:40:03,903 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 378 [2022-11-18 20:40:03,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 378 transitions, 774 flow. Second operand has 2 states, 2 states have (on average 333.5) internal successors, (667), 2 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:03,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 378 [2022-11-18 20:40:03,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:04,105 INFO L130 PetriNetUnfolder]: 14/582 cut-off events. [2022-11-18 20:40:04,106 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 20:40:04,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 582 events. 14/582 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2879 event pairs, 0 based on Foata normal form. 82/612 useless extension candidates. Maximal degree in co-relation 355. Up to 7 conditions per place. [2022-11-18 20:40:04,118 INFO L137 encePairwiseOnDemand]: 339/378 looper letters, 4 selfloop transitions, 0 changer transitions 0/336 dead transitions. [2022-11-18 20:40:04,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 336 transitions, 698 flow [2022-11-18 20:40:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:40:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:40:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 707 transitions. [2022-11-18 20:40:04,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9351851851851852 [2022-11-18 20:40:04,121 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 707 transitions. [2022-11-18 20:40:04,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 707 transitions. [2022-11-18 20:40:04,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:04,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 707 transitions. [2022-11-18 20:40:04,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 353.5) internal successors, (707), 2 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 378.0) internal successors, (1134), 3 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,126 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 378.0) internal successors, (1134), 3 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,127 INFO L175 Difference]: Start difference. First operand has 335 places, 378 transitions, 774 flow. Second operand 2 states and 707 transitions. [2022-11-18 20:40:04,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 336 transitions, 698 flow [2022-11-18 20:40:04,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 336 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:40:04,135 INFO L231 Difference]: Finished difference. Result has 333 places, 336 transitions, 690 flow [2022-11-18 20:40:04,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=690, PETRI_PLACES=333, PETRI_TRANSITIONS=336} [2022-11-18 20:40:04,137 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, -2 predicate places. [2022-11-18 20:40:04,137 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 336 transitions, 690 flow [2022-11-18 20:40:04,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 333.5) internal successors, (667), 2 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:04,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:04,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:40:04,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:40:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash 803702933, now seen corresponding path program 1 times [2022-11-18 20:40:04,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:04,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547526388] [2022-11-18 20:40:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:04,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:04,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:04,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547526388] [2022-11-18 20:40:04,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547526388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:04,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:04,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667572416] [2022-11-18 20:40:04,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:04,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:04,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:40:04,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 378 [2022-11-18 20:40:04,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 336 transitions, 690 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:04,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 378 [2022-11-18 20:40:04,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:04,393 INFO L130 PetriNetUnfolder]: 14/586 cut-off events. [2022-11-18 20:40:04,393 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 20:40:04,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 586 events. 14/586 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2885 event pairs, 0 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 614. Up to 14 conditions per place. [2022-11-18 20:40:04,408 INFO L137 encePairwiseOnDemand]: 375/378 looper letters, 13 selfloop transitions, 2 changer transitions 0/340 dead transitions. [2022-11-18 20:40:04,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 340 transitions, 728 flow [2022-11-18 20:40:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2022-11-18 20:40:04,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8738977072310405 [2022-11-18 20:40:04,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2022-11-18 20:40:04,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2022-11-18 20:40:04,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:04,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2022-11-18 20:40:04,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,420 INFO L175 Difference]: Start difference. First operand has 333 places, 336 transitions, 690 flow. Second operand 3 states and 991 transitions. [2022-11-18 20:40:04,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 340 transitions, 728 flow [2022-11-18 20:40:04,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 340 transitions, 728 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:40:04,428 INFO L231 Difference]: Finished difference. Result has 336 places, 337 transitions, 702 flow [2022-11-18 20:40:04,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=336, PETRI_TRANSITIONS=337} [2022-11-18 20:40:04,431 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 1 predicate places. [2022-11-18 20:40:04,432 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 337 transitions, 702 flow [2022-11-18 20:40:04,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:04,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:04,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:40:04,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:40:04,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash 417935011, now seen corresponding path program 1 times [2022-11-18 20:40:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:04,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352452701] [2022-11-18 20:40:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:04,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:04,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352452701] [2022-11-18 20:40:04,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352452701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:04,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149927008] [2022-11-18 20:40:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:04,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:04,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:04,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:40:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:04,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:40:04,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:40:04,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:40:04,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149927008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:04,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:40:04,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 20:40:04,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606883175] [2022-11-18 20:40:04,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:04,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:04,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:04,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:04,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:04,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 378 [2022-11-18 20:40:04,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 337 transitions, 702 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:04,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 378 [2022-11-18 20:40:04,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:04,895 INFO L130 PetriNetUnfolder]: 11/497 cut-off events. [2022-11-18 20:40:04,896 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 20:40:04,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 497 events. 11/497 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2235 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 533. Up to 16 conditions per place. [2022-11-18 20:40:04,910 INFO L137 encePairwiseOnDemand]: 375/378 looper letters, 13 selfloop transitions, 2 changer transitions 0/341 dead transitions. [2022-11-18 20:40:04,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 341 transitions, 740 flow [2022-11-18 20:40:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2022-11-18 20:40:04,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8738977072310405 [2022-11-18 20:40:04,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2022-11-18 20:40:04,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2022-11-18 20:40:04,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:04,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2022-11-18 20:40:04,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,924 INFO L175 Difference]: Start difference. First operand has 336 places, 337 transitions, 702 flow. Second operand 3 states and 991 transitions. [2022-11-18 20:40:04,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 341 transitions, 740 flow [2022-11-18 20:40:04,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 341 transitions, 738 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:04,933 INFO L231 Difference]: Finished difference. Result has 338 places, 338 transitions, 712 flow [2022-11-18 20:40:04,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=712, PETRI_PLACES=338, PETRI_TRANSITIONS=338} [2022-11-18 20:40:04,936 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 3 predicate places. [2022-11-18 20:40:04,936 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 338 transitions, 712 flow [2022-11-18 20:40:04,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:04,937 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:04,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 20:40:05,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:40:05,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:40:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1570999532, now seen corresponding path program 1 times [2022-11-18 20:40:05,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:05,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977863842] [2022-11-18 20:40:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:40:05,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:05,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977863842] [2022-11-18 20:40:05,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977863842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:05,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457236800] [2022-11-18 20:40:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:05,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:05,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:05,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:05,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:40:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:40:05,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:40:05,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:40:05,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457236800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:05,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:40:05,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 20:40:05,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412068551] [2022-11-18 20:40:05,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:05,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:05,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:05,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:05,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 378 [2022-11-18 20:40:05,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 338 transitions, 712 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:05,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 378 [2022-11-18 20:40:05,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:05,700 INFO L130 PetriNetUnfolder]: 13/665 cut-off events. [2022-11-18 20:40:05,700 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:40:05,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 665 events. 13/665 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2923 event pairs, 0 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 714. Up to 21 conditions per place. [2022-11-18 20:40:05,722 INFO L137 encePairwiseOnDemand]: 375/378 looper letters, 14 selfloop transitions, 2 changer transitions 0/342 dead transitions. [2022-11-18 20:40:05,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 342 transitions, 752 flow [2022-11-18 20:40:05,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2022-11-18 20:40:05,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8721340388007055 [2022-11-18 20:40:05,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2022-11-18 20:40:05,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2022-11-18 20:40:05,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:05,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2022-11-18 20:40:05,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,734 INFO L175 Difference]: Start difference. First operand has 338 places, 338 transitions, 712 flow. Second operand 3 states and 989 transitions. [2022-11-18 20:40:05,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 342 transitions, 752 flow [2022-11-18 20:40:05,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 342 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:05,743 INFO L231 Difference]: Finished difference. Result has 340 places, 339 transitions, 722 flow [2022-11-18 20:40:05,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=722, PETRI_PLACES=340, PETRI_TRANSITIONS=339} [2022-11-18 20:40:05,746 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 5 predicate places. [2022-11-18 20:40:05,746 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 339 transitions, 722 flow [2022-11-18 20:40:05,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:05,747 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:05,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:05,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:05,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:40:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash 894661972, now seen corresponding path program 1 times [2022-11-18 20:40:05,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:05,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502093708] [2022-11-18 20:40:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:05,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:06,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:06,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502093708] [2022-11-18 20:40:06,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502093708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:06,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43561519] [2022-11-18 20:40:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:06,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:06,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:06,047 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:06,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:40:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:40:06,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:06,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:06,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43561519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:06,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:06,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:40:06,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328649607] [2022-11-18 20:40:06,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:06,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:06,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:06,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:06,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:06,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 378 [2022-11-18 20:40:06,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 339 transitions, 722 flow. Second operand has 10 states, 10 states have (on average 326.2) internal successors, (3262), 10 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:06,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 378 [2022-11-18 20:40:06,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:06,657 INFO L130 PetriNetUnfolder]: 13/672 cut-off events. [2022-11-18 20:40:06,657 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:40:06,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 672 events. 13/672 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2918 event pairs, 0 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 728. Up to 11 conditions per place. [2022-11-18 20:40:06,679 INFO L137 encePairwiseOnDemand]: 372/378 looper letters, 14 selfloop transitions, 9 changer transitions 0/349 dead transitions. [2022-11-18 20:40:06,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 349 transitions, 790 flow [2022-11-18 20:40:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:40:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:40:06,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2941 transitions. [2022-11-18 20:40:06,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644914756025868 [2022-11-18 20:40:06,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2941 transitions. [2022-11-18 20:40:06,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2941 transitions. [2022-11-18 20:40:06,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:06,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2941 transitions. [2022-11-18 20:40:06,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 326.77777777777777) internal successors, (2941), 9 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,706 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,707 INFO L175 Difference]: Start difference. First operand has 340 places, 339 transitions, 722 flow. Second operand 9 states and 2941 transitions. [2022-11-18 20:40:06,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 349 transitions, 790 flow [2022-11-18 20:40:06,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 349 transitions, 788 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:06,716 INFO L231 Difference]: Finished difference. Result has 350 places, 345 transitions, 770 flow [2022-11-18 20:40:06,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=770, PETRI_PLACES=350, PETRI_TRANSITIONS=345} [2022-11-18 20:40:06,718 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 15 predicate places. [2022-11-18 20:40:06,718 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 345 transitions, 770 flow [2022-11-18 20:40:06,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.2) internal successors, (3262), 10 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:06,720 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:06,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:06,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:06,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:40:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash -517888876, now seen corresponding path program 2 times [2022-11-18 20:40:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:06,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10905298] [2022-11-18 20:40:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:06,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:07,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10905298] [2022-11-18 20:40:07,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10905298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106000752] [2022-11-18 20:40:07,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:40:07,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:07,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:07,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:40:07,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:40:07,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:07,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:40:07,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:07,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:07,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106000752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:07,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:07,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:40:07,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39364153] [2022-11-18 20:40:07,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:07,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:40:07,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:40:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:40:07,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 378 [2022-11-18 20:40:07,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 345 transitions, 770 flow. Second operand has 18 states, 18 states have (on average 326.3333333333333) internal successors, (5874), 18 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:07,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:07,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 378 [2022-11-18 20:40:07,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:08,017 INFO L130 PetriNetUnfolder]: 13/692 cut-off events. [2022-11-18 20:40:08,018 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-18 20:40:08,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 692 events. 13/692 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2919 event pairs, 0 based on Foata normal form. 4/644 useless extension candidates. Maximal degree in co-relation 814. Up to 11 conditions per place. [2022-11-18 20:40:08,049 INFO L137 encePairwiseOnDemand]: 372/378 looper letters, 22 selfloop transitions, 21 changer transitions 0/369 dead transitions. [2022-11-18 20:40:08,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 369 transitions, 964 flow [2022-11-18 20:40:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:40:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:40:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6851 transitions. [2022-11-18 20:40:08,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.863063744016125 [2022-11-18 20:40:08,069 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6851 transitions. [2022-11-18 20:40:08,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6851 transitions. [2022-11-18 20:40:08,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:08,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6851 transitions. [2022-11-18 20:40:08,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 326.23809523809524) internal successors, (6851), 21 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 378.0) internal successors, (8316), 22 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,111 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 378.0) internal successors, (8316), 22 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,111 INFO L175 Difference]: Start difference. First operand has 350 places, 345 transitions, 770 flow. Second operand 21 states and 6851 transitions. [2022-11-18 20:40:08,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 369 transitions, 964 flow [2022-11-18 20:40:08,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 369 transitions, 950 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:08,122 INFO L231 Difference]: Finished difference. Result has 374 places, 358 transitions, 894 flow [2022-11-18 20:40:08,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=894, PETRI_PLACES=374, PETRI_TRANSITIONS=358} [2022-11-18 20:40:08,124 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 39 predicate places. [2022-11-18 20:40:08,124 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 358 transitions, 894 flow [2022-11-18 20:40:08,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 326.3333333333333) internal successors, (5874), 18 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:08,127 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:08,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:08,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:40:08,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:40:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash -846474476, now seen corresponding path program 3 times [2022-11-18 20:40:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:08,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824315988] [2022-11-18 20:40:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:08,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:08,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:08,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824315988] [2022-11-18 20:40:08,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824315988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:08,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085775656] [2022-11-18 20:40:08,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:40:08,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:08,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:08,781 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:08,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:40:08,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 20:40:08,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:08,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:40:08,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:09,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:09,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085775656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:09,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:09,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:40:09,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624185921] [2022-11-18 20:40:09,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:09,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:40:09,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:40:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:40:09,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 378 [2022-11-18 20:40:09,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 358 transitions, 894 flow. Second operand has 23 states, 23 states have (on average 326.4782608695652) internal successors, (7509), 23 states have internal predecessors, (7509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:09,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 378 [2022-11-18 20:40:09,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:10,121 INFO L130 PetriNetUnfolder]: 13/707 cut-off events. [2022-11-18 20:40:10,121 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-18 20:40:10,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 707 events. 13/707 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2919 event pairs, 0 based on Foata normal form. 3/658 useless extension candidates. Maximal degree in co-relation 910. Up to 17 conditions per place. [2022-11-18 20:40:10,144 INFO L137 encePairwiseOnDemand]: 372/378 looper letters, 28 selfloop transitions, 30 changer transitions 0/384 dead transitions. [2022-11-18 20:40:10,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 384 transitions, 1156 flow [2022-11-18 20:40:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:40:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:40:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9781 transitions. [2022-11-18 20:40:10,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8625220458553792 [2022-11-18 20:40:10,158 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9781 transitions. [2022-11-18 20:40:10,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9781 transitions. [2022-11-18 20:40:10,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:10,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9781 transitions. [2022-11-18 20:40:10,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 326.03333333333336) internal successors, (9781), 30 states have internal predecessors, (9781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 378.0) internal successors, (11718), 31 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,204 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 378.0) internal successors, (11718), 31 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,205 INFO L175 Difference]: Start difference. First operand has 374 places, 358 transitions, 894 flow. Second operand 30 states and 9781 transitions. [2022-11-18 20:40:10,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 384 transitions, 1156 flow [2022-11-18 20:40:10,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 384 transitions, 1126 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-18 20:40:10,215 INFO L231 Difference]: Finished difference. Result has 401 places, 368 transitions, 1022 flow [2022-11-18 20:40:10,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1022, PETRI_PLACES=401, PETRI_TRANSITIONS=368} [2022-11-18 20:40:10,217 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 66 predicate places. [2022-11-18 20:40:10,217 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 368 transitions, 1022 flow [2022-11-18 20:40:10,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 326.4782608695652) internal successors, (7509), 23 states have internal predecessors, (7509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:10,221 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:10,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:10,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:40:10,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:40:10,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:10,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1615039366, now seen corresponding path program 4 times [2022-11-18 20:40:10,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:10,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51116459] [2022-11-18 20:40:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:10,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:10,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:40:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:10,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:40:10,493 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:40:10,493 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-18 20:40:10,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-18 20:40:10,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-18 20:40:10,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-18 20:40:10,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-18 20:40:10,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-18 20:40:10,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-18 20:40:10,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-18 20:40:10,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-18 20:40:10,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-18 20:40:10,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-18 20:40:10,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-18 20:40:10,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-18 20:40:10,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-18 20:40:10,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-18 20:40:10,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-18 20:40:10,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-18 20:40:10,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-18 20:40:10,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-18 20:40:10,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-18 20:40:10,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-18 20:40:10,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-18 20:40:10,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:40:10,498 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2022-11-18 20:40:10,499 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:40:10,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:40:10,580 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:40:10,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 484 transitions, 998 flow [2022-11-18 20:40:10,927 INFO L130 PetriNetUnfolder]: 120/960 cut-off events. [2022-11-18 20:40:10,927 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:40:10,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 960 events. 120/960 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5648 event pairs, 1 based on Foata normal form. 0/793 useless extension candidates. Maximal degree in co-relation 663. Up to 16 conditions per place. [2022-11-18 20:40:10,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 484 transitions, 998 flow [2022-11-18 20:40:10,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 428 places, 484 transitions, 998 flow [2022-11-18 20:40:10,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:40:10,977 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;@367c4459, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:40:10,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-18 20:40:10,985 INFO L130 PetriNetUnfolder]: 7/81 cut-off events. [2022-11-18 20:40:10,985 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:40:10,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:10,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:10,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 20:40:10,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:10,986 INFO L85 PathProgramCache]: Analyzing trace with hash 326834706, now seen corresponding path program 1 times [2022-11-18 20:40:10,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:10,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145032310] [2022-11-18 20:40:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:10,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:11,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:11,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145032310] [2022-11-18 20:40:11,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145032310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:11,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:11,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:40:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885387475] [2022-11-18 20:40:11,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:11,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:40:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:40:11,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:40:11,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 484 [2022-11-18 20:40:11,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 484 transitions, 998 flow. Second operand has 2 states, 2 states have (on average 424.5) internal successors, (849), 2 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:11,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 484 [2022-11-18 20:40:11,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:11,349 INFO L130 PetriNetUnfolder]: 23/856 cut-off events. [2022-11-18 20:40:11,349 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-18 20:40:11,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 856 events. 23/856 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4969 event pairs, 1 based on Foata normal form. 173/952 useless extension candidates. Maximal degree in co-relation 596. Up to 16 conditions per place. [2022-11-18 20:40:11,367 INFO L137 encePairwiseOnDemand]: 433/484 looper letters, 6 selfloop transitions, 0 changer transitions 0/429 dead transitions. [2022-11-18 20:40:11,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 429 transitions, 900 flow [2022-11-18 20:40:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:40:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:40:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 903 transitions. [2022-11-18 20:40:11,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9328512396694215 [2022-11-18 20:40:11,371 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 903 transitions. [2022-11-18 20:40:11,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 903 transitions. [2022-11-18 20:40:11,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:11,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 903 transitions. [2022-11-18 20:40:11,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 451.5) internal successors, (903), 2 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 484.0) internal successors, (1452), 3 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,377 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 484.0) internal successors, (1452), 3 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,377 INFO L175 Difference]: Start difference. First operand has 428 places, 484 transitions, 998 flow. Second operand 2 states and 903 transitions. [2022-11-18 20:40:11,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 429 transitions, 900 flow [2022-11-18 20:40:11,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 429 transitions, 900 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:40:11,387 INFO L231 Difference]: Finished difference. Result has 425 places, 429 transitions, 888 flow [2022-11-18 20:40:11,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=888, PETRI_PLACES=425, PETRI_TRANSITIONS=429} [2022-11-18 20:40:11,389 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, -3 predicate places. [2022-11-18 20:40:11,389 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 429 transitions, 888 flow [2022-11-18 20:40:11,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 424.5) internal successors, (849), 2 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:11,390 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:11,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:40:11,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 20:40:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1770019307, now seen corresponding path program 1 times [2022-11-18 20:40:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:11,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302425141] [2022-11-18 20:40:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:11,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:11,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302425141] [2022-11-18 20:40:11,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302425141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:11,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:11,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779508509] [2022-11-18 20:40:11,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:11,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:11,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:11,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:11,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:40:11,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 484 [2022-11-18 20:40:11,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 429 transitions, 888 flow. Second operand has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:11,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 484 [2022-11-18 20:40:11,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:11,769 INFO L130 PetriNetUnfolder]: 23/860 cut-off events. [2022-11-18 20:40:11,770 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-18 20:40:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 860 events. 23/860 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4984 event pairs, 1 based on Foata normal form. 0/783 useless extension candidates. Maximal degree in co-relation 910. Up to 23 conditions per place. [2022-11-18 20:40:11,801 INFO L137 encePairwiseOnDemand]: 481/484 looper letters, 15 selfloop transitions, 2 changer transitions 0/433 dead transitions. [2022-11-18 20:40:11,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 433 transitions, 930 flow [2022-11-18 20:40:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2022-11-18 20:40:11,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871900826446281 [2022-11-18 20:40:11,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2022-11-18 20:40:11,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2022-11-18 20:40:11,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:11,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2022-11-18 20:40:11,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,813 INFO L175 Difference]: Start difference. First operand has 425 places, 429 transitions, 888 flow. Second operand 3 states and 1266 transitions. [2022-11-18 20:40:11,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 433 transitions, 930 flow [2022-11-18 20:40:11,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 930 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:40:11,824 INFO L231 Difference]: Finished difference. Result has 428 places, 430 transitions, 900 flow [2022-11-18 20:40:11,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=900, PETRI_PLACES=428, PETRI_TRANSITIONS=430} [2022-11-18 20:40:11,826 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, 0 predicate places. [2022-11-18 20:40:11,826 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 430 transitions, 900 flow [2022-11-18 20:40:11,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:11,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:11,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:40:11,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 20:40:11,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2083567097, now seen corresponding path program 1 times [2022-11-18 20:40:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:11,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789144851] [2022-11-18 20:40:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:11,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789144851] [2022-11-18 20:40:11,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789144851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:11,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52143830] [2022-11-18 20:40:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:11,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:11,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:11,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:11,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:40:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:40:12,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:40:12,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:40:12,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52143830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:12,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:40:12,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 20:40:12,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347539982] [2022-11-18 20:40:12,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:12,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:12,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:12,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:12,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 484 [2022-11-18 20:40:12,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 430 transitions, 900 flow. Second operand has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:12,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 484 [2022-11-18 20:40:12,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:12,438 INFO L130 PetriNetUnfolder]: 20/771 cut-off events. [2022-11-18 20:40:12,438 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-18 20:40:12,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 771 events. 20/771 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4322 event pairs, 1 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 834. Up to 30 conditions per place. [2022-11-18 20:40:12,470 INFO L137 encePairwiseOnDemand]: 481/484 looper letters, 15 selfloop transitions, 2 changer transitions 0/434 dead transitions. [2022-11-18 20:40:12,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 434 transitions, 942 flow [2022-11-18 20:40:12,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2022-11-18 20:40:12,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871900826446281 [2022-11-18 20:40:12,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2022-11-18 20:40:12,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2022-11-18 20:40:12,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:12,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2022-11-18 20:40:12,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,483 INFO L175 Difference]: Start difference. First operand has 428 places, 430 transitions, 900 flow. Second operand 3 states and 1266 transitions. [2022-11-18 20:40:12,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 434 transitions, 942 flow [2022-11-18 20:40:12,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 434 transitions, 940 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:12,494 INFO L231 Difference]: Finished difference. Result has 430 places, 431 transitions, 910 flow [2022-11-18 20:40:12,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=910, PETRI_PLACES=430, PETRI_TRANSITIONS=431} [2022-11-18 20:40:12,495 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, 2 predicate places. [2022-11-18 20:40:12,496 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 431 transitions, 910 flow [2022-11-18 20:40:12,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:12,497 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:12,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:12,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:40:12,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 20:40:12,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash -655762888, now seen corresponding path program 1 times [2022-11-18 20:40:12,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:12,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169283566] [2022-11-18 20:40:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:12,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:40:12,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:12,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169283566] [2022-11-18 20:40:12,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169283566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:12,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746227856] [2022-11-18 20:40:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:12,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:12,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:12,794 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:12,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:40:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:40:12,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:40:12,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:40:12,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746227856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:12,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:40:12,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 20:40:12,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538255124] [2022-11-18 20:40:12,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:12,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:12,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:12,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:12,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 484 [2022-11-18 20:40:12,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 431 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:12,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 484 [2022-11-18 20:40:12,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:13,445 INFO L130 PetriNetUnfolder]: 23/1023 cut-off events. [2022-11-18 20:40:13,445 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-18 20:40:13,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 1023 events. 23/1023 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5635 event pairs, 1 based on Foata normal form. 0/938 useless extension candidates. Maximal degree in co-relation 1106. Up to 36 conditions per place. [2022-11-18 20:40:13,492 INFO L137 encePairwiseOnDemand]: 481/484 looper letters, 16 selfloop transitions, 2 changer transitions 0/435 dead transitions. [2022-11-18 20:40:13,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 435 transitions, 954 flow [2022-11-18 20:40:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2022-11-18 20:40:13,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8705234159779615 [2022-11-18 20:40:13,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2022-11-18 20:40:13,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2022-11-18 20:40:13,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:13,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2022-11-18 20:40:13,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,503 INFO L175 Difference]: Start difference. First operand has 430 places, 431 transitions, 910 flow. Second operand 3 states and 1264 transitions. [2022-11-18 20:40:13,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 435 transitions, 954 flow [2022-11-18 20:40:13,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 435 transitions, 952 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:13,513 INFO L231 Difference]: Finished difference. Result has 432 places, 432 transitions, 920 flow [2022-11-18 20:40:13,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=920, PETRI_PLACES=432, PETRI_TRANSITIONS=432} [2022-11-18 20:40:13,514 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, 4 predicate places. [2022-11-18 20:40:13,515 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 432 transitions, 920 flow [2022-11-18 20:40:13,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:13,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:13,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:13,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:13,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 20:40:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:13,730 INFO L85 PathProgramCache]: Analyzing trace with hash -96847837, now seen corresponding path program 1 times [2022-11-18 20:40:13,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:13,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160325780] [2022-11-18 20:40:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:13,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:13,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:13,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160325780] [2022-11-18 20:40:13,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160325780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:13,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096607336] [2022-11-18 20:40:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:13,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:13,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:13,865 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:13,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:40:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:14,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:40:14,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:14,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:14,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096607336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:14,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:14,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:40:14,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999356318] [2022-11-18 20:40:14,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:14,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:14,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:14,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:14,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:14,139 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 484 [2022-11-18 20:40:14,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 432 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 417.1) internal successors, (4171), 10 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:14,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 484 [2022-11-18 20:40:14,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:14,733 INFO L130 PetriNetUnfolder]: 23/1030 cut-off events. [2022-11-18 20:40:14,733 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-18 20:40:14,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 1030 events. 23/1030 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5639 event pairs, 1 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 1115. Up to 20 conditions per place. [2022-11-18 20:40:14,780 INFO L137 encePairwiseOnDemand]: 478/484 looper letters, 16 selfloop transitions, 9 changer transitions 0/442 dead transitions. [2022-11-18 20:40:14,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 442 transitions, 992 flow [2022-11-18 20:40:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:40:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:40:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3762 transitions. [2022-11-18 20:40:14,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2022-11-18 20:40:14,786 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3762 transitions. [2022-11-18 20:40:14,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3762 transitions. [2022-11-18 20:40:14,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:14,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3762 transitions. [2022-11-18 20:40:14,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 484.0) internal successors, (4840), 10 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,809 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 484.0) internal successors, (4840), 10 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,809 INFO L175 Difference]: Start difference. First operand has 432 places, 432 transitions, 920 flow. Second operand 9 states and 3762 transitions. [2022-11-18 20:40:14,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 442 transitions, 992 flow [2022-11-18 20:40:14,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 442 transitions, 990 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:14,821 INFO L231 Difference]: Finished difference. Result has 442 places, 438 transitions, 968 flow [2022-11-18 20:40:14,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=442, PETRI_TRANSITIONS=438} [2022-11-18 20:40:14,823 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, 14 predicate places. [2022-11-18 20:40:14,823 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 438 transitions, 968 flow [2022-11-18 20:40:14,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.1) internal successors, (4171), 10 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:14,826 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:14,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:15,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:15,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 20:40:15,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:15,034 INFO L85 PathProgramCache]: Analyzing trace with hash -270483613, now seen corresponding path program 2 times [2022-11-18 20:40:15,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:15,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828752762] [2022-11-18 20:40:15,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:15,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:15,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:15,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828752762] [2022-11-18 20:40:15,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828752762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:15,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750799956] [2022-11-18 20:40:15,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:40:15,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:15,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:15,233 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:15,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbee71f-6c8e-44be-a6bd-19076fa4a22a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:40:15,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:40:15,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:15,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:40:15,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:15,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:40:15,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:40:15,526 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:15,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 20:40:15,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:15,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 20:40:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:40:15,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:40:15,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750799956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:15,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:40:15,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-18 20:40:15,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459499291] [2022-11-18 20:40:15,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:15,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:15,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:40:15,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 484 [2022-11-18 20:40:15,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 438 transitions, 968 flow. Second operand has 6 states, 6 states have (on average 289.6666666666667) internal successors, (1738), 6 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:15,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:15,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 484 [2022-11-18 20:40:15,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand