./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R --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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- 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-38b53e6 [2022-11-25 17:21:09,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:21:09,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:21:09,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:21:09,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:21:09,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:21:09,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:21:09,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:21:09,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:21:09,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:21:09,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:21:09,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:21:09,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:21:09,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:21:09,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:21:09,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:21:09,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:21:09,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:21:09,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:21:09,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:21:09,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:21:09,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:21:09,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:21:09,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:21:09,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:21:09,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:21:09,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:21:09,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:21:09,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:21:09,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:21:09,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:21:09,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:21:09,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:21:09,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:21:09,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:21:09,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:21:09,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:21:09,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:21:09,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:21:09,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:21:09,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:21:09,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:21:09,923 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:21:09,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:21:09,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:21:09,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:21:09,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:21:09,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:21:09,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:21:09,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:21:09,927 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:21:09,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:21:09,929 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:21:09,929 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:21:09,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:21:09,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:21:09,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:21:09,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:21:09,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:21:09,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:21:09,931 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:21:09,931 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:21:09,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:21:09,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:21:09,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:21:09,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:21:09,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:21:09,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:21:09,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:21:09,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:21:09,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:21:09,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:21:09,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:21:09,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:21:09,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:21:09,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:21:09,936 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:21:09,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:21:09,936 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2022-11-25 17:21:10,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:21:10,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:21:10,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:21:10,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:21:10,353 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:21:10,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2022-11-25 17:21:13,627 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:21:14,003 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:21:14,004 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2022-11-25 17:21:14,024 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/data/7ecbc7f1f/20c645f09f52454f8b7126d604087ba2/FLAG4190e359f [2022-11-25 17:21:14,041 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/data/7ecbc7f1f/20c645f09f52454f8b7126d604087ba2 [2022-11-25 17:21:14,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:21:14,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:21:14,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:21:14,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:21:14,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:21:14,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:14,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4f4fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14, skipping insertion in model container [2022-11-25 17:21:14,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:14,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:21:14,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:21:14,751 WARN L237 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_689f902c-ff49-4b33-86a1-f2d5aee5ea79/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2022-11-25 17:21:14,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:21:14,801 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:21:14,840 WARN L237 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_689f902c-ff49-4b33-86a1-f2d5aee5ea79/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2022-11-25 17:21:14,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:21:14,924 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:21:14,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14 WrapperNode [2022-11-25 17:21:14,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:21:14,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:21:14,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:21:14,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:21:14,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:14,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,050 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2022-11-25 17:21:15,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:21:15,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:21:15,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:21:15,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:21:15,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:21:15,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:21:15,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:21:15,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:21:15,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (1/1) ... [2022-11-25 17:21:15,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:21:15,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:15,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:15,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:21:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:21:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:21:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:21:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:21:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:21:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:21:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 17:21:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 17:21:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:21:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:21:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:21:15,197 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:21:15,450 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:21:15,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:21:16,081 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:21:16,092 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:21:16,092 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-25 17:21:16,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:16 BoogieIcfgContainer [2022-11-25 17:21:16,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:21:16,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:21:16,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:21:16,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:21:16,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:21:14" (1/3) ... [2022-11-25 17:21:16,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a98712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:21:16, skipping insertion in model container [2022-11-25 17:21:16,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:14" (2/3) ... [2022-11-25 17:21:16,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a98712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:21:16, skipping insertion in model container [2022-11-25 17:21:16,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:16" (3/3) ... [2022-11-25 17:21:16,111 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2022-11-25 17:21:16,122 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:21:16,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:21:16,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-25 17:21:16,134 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:21:16,274 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 17:21:16,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 272 transitions, 552 flow [2022-11-25 17:21:16,639 INFO L130 PetriNetUnfolder]: 45/383 cut-off events. [2022-11-25 17:21:16,639 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-25 17:21:16,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 383 events. 45/383 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1542 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 222. Up to 8 conditions per place. [2022-11-25 17:21:16,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 272 transitions, 552 flow [2022-11-25 17:21:16,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 272 transitions, 552 flow [2022-11-25 17:21:16,673 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:21:16,703 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 272 transitions, 552 flow [2022-11-25 17:21:16,716 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 272 transitions, 552 flow [2022-11-25 17:21:16,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 272 transitions, 552 flow [2022-11-25 17:21:16,810 INFO L130 PetriNetUnfolder]: 45/383 cut-off events. [2022-11-25 17:21:16,811 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-25 17:21:16,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 383 events. 45/383 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1542 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 222. Up to 8 conditions per place. [2022-11-25 17:21:16,834 INFO L119 LiptonReduction]: Number of co-enabled transitions 24804 [2022-11-25 17:21:24,325 INFO L134 LiptonReduction]: Checked pairs total: 195197 [2022-11-25 17:21:24,326 INFO L136 LiptonReduction]: Total number of compositions: 232 [2022-11-25 17:21:24,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:21:24,365 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;@69012c5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:21:24,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 17:21:24,372 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2022-11-25 17:21:24,372 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:21:24,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:24,374 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 17:21:24,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 17:21:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1330379676, now seen corresponding path program 1 times [2022-11-25 17:21:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:24,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575124805] [2022-11-25 17:21:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:24,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:21:24,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:24,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575124805] [2022-11-25 17:21:24,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575124805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:24,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:24,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:21:24,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016367377] [2022-11-25 17:21:24,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:24,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:24,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 504 [2022-11-25 17:21:24,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 134 transitions, 276 flow. Second operand has 3 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) [2022-11-25 17:21:24,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:24,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 504 [2022-11-25 17:21:24,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:25,326 INFO L130 PetriNetUnfolder]: 400/1571 cut-off events. [2022-11-25 17:21:25,326 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-11-25 17:21:25,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1571 events. 400/1571 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11212 event pairs, 357 based on Foata normal form. 205/1658 useless extension candidates. Maximal degree in co-relation 2267. Up to 789 conditions per place. [2022-11-25 17:21:25,337 INFO L137 encePairwiseOnDemand]: 479/504 looper letters, 43 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-11-25 17:21:25,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 324 flow [2022-11-25 17:21:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2022-11-25 17:21:25,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5152116402116402 [2022-11-25 17:21:25,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2022-11-25 17:21:25,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2022-11-25 17:21:25,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:25,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2022-11-25 17:21:25,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:25,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:25,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:25,389 INFO L175 Difference]: Start difference. First operand has 111 places, 134 transitions, 276 flow. Second operand 3 states and 779 transitions. [2022-11-25 17:21:25,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 324 flow [2022-11-25 17:21:25,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:21:25,397 INFO L231 Difference]: Finished difference. Result has 114 places, 113 transitions, 244 flow [2022-11-25 17:21:25,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=114, PETRI_TRANSITIONS=113} [2022-11-25 17:21:25,403 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 3 predicate places. [2022-11-25 17:21:25,403 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 113 transitions, 244 flow [2022-11-25 17:21:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-25 17:21:25,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:25,404 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:25,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:21:25,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 17:21:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash -37238111, now seen corresponding path program 1 times [2022-11-25 17:21:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:25,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043565067] [2022-11-25 17:21:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:21:25,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:25,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043565067] [2022-11-25 17:21:25,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043565067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:21:25,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904964680] [2022-11-25 17:21:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:25,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:25,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:25,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:21:25,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:21:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:25,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:21:25,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:21:25,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:21:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:21:25,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904964680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:21:25,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:21:25,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:21:25,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647481739] [2022-11-25 17:21:25,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:21:25,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:25,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:25,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 504 [2022-11-25 17:21:25,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 113 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:25,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:25,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 504 [2022-11-25 17:21:25,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:26,271 INFO L130 PetriNetUnfolder]: 400/1574 cut-off events. [2022-11-25 17:21:26,272 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-11-25 17:21:26,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 1574 events. 400/1574 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11185 event pairs, 357 based on Foata normal form. 0/1456 useless extension candidates. Maximal degree in co-relation 2372. Up to 789 conditions per place. [2022-11-25 17:21:26,280 INFO L137 encePairwiseOnDemand]: 501/504 looper letters, 43 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2022-11-25 17:21:26,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 116 transitions, 352 flow [2022-11-25 17:21:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:21:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:21:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1467 transitions. [2022-11-25 17:21:26,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2022-11-25 17:21:26,286 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1467 transitions. [2022-11-25 17:21:26,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1467 transitions. [2022-11-25 17:21:26,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:26,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1467 transitions. [2022-11-25 17:21:26,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,300 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,300 INFO L175 Difference]: Start difference. First operand has 114 places, 113 transitions, 244 flow. Second operand 6 states and 1467 transitions. [2022-11-25 17:21:26,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 116 transitions, 352 flow [2022-11-25 17:21:26,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 116 transitions, 348 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:26,305 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 276 flow [2022-11-25 17:21:26,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2022-11-25 17:21:26,306 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 10 predicate places. [2022-11-25 17:21:26,306 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 276 flow [2022-11-25 17:21:26,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:26,308 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-25 17:21:26,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:21:26,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:26,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 17:21:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 982657956, now seen corresponding path program 2 times [2022-11-25 17:21:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:26,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885077441] [2022-11-25 17:21:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:21:26,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:26,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885077441] [2022-11-25 17:21:26,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885077441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:21:26,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538229321] [2022-11-25 17:21:26,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:21:26,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:26,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:21:26,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:21:26,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:21:26,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:21:26,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:21:26,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:21:26,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:21:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:21:26,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538229321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:21:26,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:21:26,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:21:26,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273257029] [2022-11-25 17:21:26,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:21:26,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:21:26,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:21:26,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:21:26,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 504 [2022-11-25 17:21:26,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 237.30769230769232) internal successors, (3085), 13 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:26,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 504 [2022-11-25 17:21:26,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:27,322 INFO L130 PetriNetUnfolder]: 400/1580 cut-off events. [2022-11-25 17:21:27,323 INFO L131 PetriNetUnfolder]: For 24/25 co-relation queries the response was YES. [2022-11-25 17:21:27,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 1580 events. 400/1580 cut-off events. For 24/25 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11238 event pairs, 357 based on Foata normal form. 6/1469 useless extension candidates. Maximal degree in co-relation 2363. Up to 789 conditions per place. [2022-11-25 17:21:27,333 INFO L137 encePairwiseOnDemand]: 501/504 looper letters, 43 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2022-11-25 17:21:27,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 122 transitions, 420 flow [2022-11-25 17:21:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:21:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:21:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2892 transitions. [2022-11-25 17:21:27,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4781746031746032 [2022-11-25 17:21:27,343 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2892 transitions. [2022-11-25 17:21:27,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2892 transitions. [2022-11-25 17:21:27,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:27,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2892 transitions. [2022-11-25 17:21:27,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.0) internal successors, (2892), 12 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:27,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:27,372 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:27,372 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 276 flow. Second operand 12 states and 2892 transitions. [2022-11-25 17:21:27,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 122 transitions, 420 flow [2022-11-25 17:21:27,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 122 transitions, 406 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:27,378 INFO L231 Difference]: Finished difference. Result has 137 places, 122 transitions, 346 flow [2022-11-25 17:21:27,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=137, PETRI_TRANSITIONS=122} [2022-11-25 17:21:27,379 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 26 predicate places. [2022-11-25 17:21:27,380 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 122 transitions, 346 flow [2022-11-25 17:21:27,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 237.30769230769232) internal successors, (3085), 13 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:27,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:27,382 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-25 17:21:27,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:27,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:27,598 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)] === [2022-11-25 17:21:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:27,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1444010628, now seen corresponding path program 3 times [2022-11-25 17:21:27,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:27,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653642575] [2022-11-25 17:21:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:27,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:27,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:27,742 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:21:27,743 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 17:21:27,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-25 17:21:27,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-25 17:21:27,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-25 17:21:27,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-25 17:21:27,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-25 17:21:27,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-25 17:21:27,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-25 17:21:27,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-25 17:21:27,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-25 17:21:27,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-25 17:21:27,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-25 17:21:27,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-25 17:21:27,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-25 17:21:27,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-25 17:21:27,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-25 17:21:27,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-25 17:21:27,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:21:27,757 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-25 17:21:27,760 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:21:27,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:21:27,853 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:21:27,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 778 flow [2022-11-25 17:21:28,024 INFO L130 PetriNetUnfolder]: 75/633 cut-off events. [2022-11-25 17:21:28,024 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-11-25 17:21:28,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 633 events. 75/633 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3143 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 385. Up to 12 conditions per place. [2022-11-25 17:21:28,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 380 transitions, 778 flow [2022-11-25 17:21:28,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 380 transitions, 778 flow [2022-11-25 17:21:28,045 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:21:28,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 380 transitions, 778 flow [2022-11-25 17:21:28,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 380 transitions, 778 flow [2022-11-25 17:21:28,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 778 flow [2022-11-25 17:21:28,172 INFO L130 PetriNetUnfolder]: 75/633 cut-off events. [2022-11-25 17:21:28,172 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-11-25 17:21:28,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 633 events. 75/633 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3143 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 385. Up to 12 conditions per place. [2022-11-25 17:21:28,220 INFO L119 LiptonReduction]: Number of co-enabled transitions 74412 [2022-11-25 17:21:39,291 INFO L134 LiptonReduction]: Checked pairs total: 585248 [2022-11-25 17:21:39,292 INFO L136 LiptonReduction]: Total number of compositions: 331 [2022-11-25 17:21:39,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:21:39,305 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;@69012c5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:21:39,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 17:21:39,314 INFO L130 PetriNetUnfolder]: 25/87 cut-off events. [2022-11-25 17:21:39,314 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:21:39,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:39,315 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:39,315 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)] === [2022-11-25 17:21:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:39,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1952437699, now seen corresponding path program 1 times [2022-11-25 17:21:39,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:39,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25510147] [2022-11-25 17:21:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:39,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:39,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:39,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25510147] [2022-11-25 17:21:39,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25510147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:39,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:39,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:21:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36663453] [2022-11-25 17:21:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:39,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:39,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 711 [2022-11-25 17:21:39,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 198 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:39,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:39,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 711 [2022-11-25 17:21:39,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:44,845 INFO L130 PetriNetUnfolder]: 14783/35965 cut-off events. [2022-11-25 17:21:44,846 INFO L131 PetriNetUnfolder]: For 172/202 co-relation queries the response was YES. [2022-11-25 17:21:44,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58061 conditions, 35965 events. 14783/35965 cut-off events. For 172/202 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 396155 event pairs, 13600 based on Foata normal form. 5410/38267 useless extension candidates. Maximal degree in co-relation 27840. Up to 21982 conditions per place. [2022-11-25 17:21:45,128 INFO L137 encePairwiseOnDemand]: 675/711 looper letters, 62 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2022-11-25 17:21:45,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 478 flow [2022-11-25 17:21:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1088 transitions. [2022-11-25 17:21:45,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5100796999531176 [2022-11-25 17:21:45,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1088 transitions. [2022-11-25 17:21:45,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1088 transitions. [2022-11-25 17:21:45,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:45,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1088 transitions. [2022-11-25 17:21:45,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 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) [2022-11-25 17:21:45,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:45,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:45,141 INFO L175 Difference]: Start difference. First operand has 164 places, 198 transitions, 414 flow. Second operand 3 states and 1088 transitions. [2022-11-25 17:21:45,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 478 flow [2022-11-25 17:21:45,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 166 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:21:45,148 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 360 flow [2022-11-25 17:21:45,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2022-11-25 17:21:45,151 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2022-11-25 17:21:45,151 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 360 flow [2022-11-25 17:21:45,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:45,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:45,152 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:45,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:21:45,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 17:21:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1902519423, now seen corresponding path program 1 times [2022-11-25 17:21:45,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:45,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052545197] [2022-11-25 17:21:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:45,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:45,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052545197] [2022-11-25 17:21:45,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052545197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:21:45,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596623957] [2022-11-25 17:21:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:45,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:45,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:45,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:21:45,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:21:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:45,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:21:45,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:21:45,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:21:45,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596623957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:45,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:21:45,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-25 17:21:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021763509] [2022-11-25 17:21:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:45,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:21:45,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 711 [2022-11-25 17:21:45,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:45,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:45,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 711 [2022-11-25 17:21:45,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:49,388 INFO L130 PetriNetUnfolder]: 14363/35817 cut-off events. [2022-11-25 17:21:49,389 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-11-25 17:21:49,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57492 conditions, 35817 events. 14363/35817 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 403474 event pairs, 6494 based on Foata normal form. 0/33044 useless extension candidates. Maximal degree in co-relation 57479. Up to 21515 conditions per place. [2022-11-25 17:21:49,623 INFO L137 encePairwiseOnDemand]: 708/711 looper letters, 81 selfloop transitions, 2 changer transitions 0/185 dead transitions. [2022-11-25 17:21:49,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 185 transitions, 564 flow [2022-11-25 17:21:49,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1073 transitions. [2022-11-25 17:21:49,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.503047351148617 [2022-11-25 17:21:49,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1073 transitions. [2022-11-25 17:21:49,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1073 transitions. [2022-11-25 17:21:49,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:49,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1073 transitions. [2022-11-25 17:21:49,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:49,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:49,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:49,636 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 360 flow. Second operand 3 states and 1073 transitions. [2022-11-25 17:21:49,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 185 transitions, 564 flow [2022-11-25 17:21:49,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 185 transitions, 560 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:49,642 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 368 flow [2022-11-25 17:21:49,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2022-11-25 17:21:49,646 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2022-11-25 17:21:49,646 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 368 flow [2022-11-25 17:21:49,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:49,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:49,647 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:49,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:49,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:21:49,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 17:21:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2012184053, now seen corresponding path program 1 times [2022-11-25 17:21:49,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:49,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960280530] [2022-11-25 17:21:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:21:49,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:49,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960280530] [2022-11-25 17:21:49,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960280530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:21:49,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022740449] [2022-11-25 17:21:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:49,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:49,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:49,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:21:49,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:21:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:50,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:21:50,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:21:50,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:21:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:21:50,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022740449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:21:50,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:21:50,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:21:50,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387593432] [2022-11-25 17:21:50,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:21:50,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:50,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:50,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 711 [2022-11-25 17:21:50,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 330.7142857142857) internal successors, (2315), 7 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:50,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 711 [2022-11-25 17:21:50,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:54,049 INFO L130 PetriNetUnfolder]: 14781/36107 cut-off events. [2022-11-25 17:21:54,049 INFO L131 PetriNetUnfolder]: For 855/855 co-relation queries the response was YES. [2022-11-25 17:21:54,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58929 conditions, 36107 events. 14781/36107 cut-off events. For 855/855 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 399625 event pairs, 13600 based on Foata normal form. 3/33372 useless extension candidates. Maximal degree in co-relation 58901. Up to 21993 conditions per place. [2022-11-25 17:21:54,297 INFO L137 encePairwiseOnDemand]: 708/711 looper letters, 63 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2022-11-25 17:21:54,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 516 flow [2022-11-25 17:21:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:21:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:21:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2044 transitions. [2022-11-25 17:21:54,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47913736521331457 [2022-11-25 17:21:54,309 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2044 transitions. [2022-11-25 17:21:54,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2044 transitions. [2022-11-25 17:21:54,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:54,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2044 transitions. [2022-11-25 17:21:54,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.6666666666667) internal successors, (2044), 6 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 711.0) internal successors, (4977), 7 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,326 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 711.0) internal successors, (4977), 7 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,326 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 368 flow. Second operand 6 states and 2044 transitions. [2022-11-25 17:21:54,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 516 flow [2022-11-25 17:21:54,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:54,333 INFO L231 Difference]: Finished difference. Result has 176 places, 170 transitions, 402 flow [2022-11-25 17:21:54,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2022-11-25 17:21:54,335 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2022-11-25 17:21:54,335 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 402 flow [2022-11-25 17:21:54,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 330.7142857142857) internal successors, (2315), 7 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:54,336 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:21:54,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:54,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:21:54,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 17:21:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1322021048, now seen corresponding path program 2 times [2022-11-25 17:21:54,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:54,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654449138] [2022-11-25 17:21:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:21:54,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:54,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654449138] [2022-11-25 17:21:54,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654449138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:21:54,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180025951] [2022-11-25 17:21:54,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:21:54,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:54,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:54,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:21:54,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:21:54,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:21:54,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:21:54,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:21:54,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:21:54,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:21:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:21:55,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180025951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:21:55,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:21:55,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:21:55,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830519748] [2022-11-25 17:21:55,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:21:55,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:21:55,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:55,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:21:55,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:21:55,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 711 [2022-11-25 17:21:55,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 402 flow. Second operand has 13 states, 13 states have (on average 330.38461538461536) internal successors, (4295), 13 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:55,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:55,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 711 [2022-11-25 17:21:55,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:59,303 INFO L130 PetriNetUnfolder]: 14781/36113 cut-off events. [2022-11-25 17:21:59,303 INFO L131 PetriNetUnfolder]: For 889/889 co-relation queries the response was YES. [2022-11-25 17:21:59,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58950 conditions, 36113 events. 14781/36113 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 399825 event pairs, 13600 based on Foata normal form. 6/33381 useless extension candidates. Maximal degree in co-relation 58890. Up to 21993 conditions per place. [2022-11-25 17:21:59,498 INFO L137 encePairwiseOnDemand]: 708/711 looper letters, 63 selfloop transitions, 11 changer transitions 0/176 dead transitions. [2022-11-25 17:21:59,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 176 transitions, 586 flow [2022-11-25 17:21:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:21:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:21:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4027 transitions. [2022-11-25 17:21:59,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4719878105954055 [2022-11-25 17:21:59,510 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4027 transitions. [2022-11-25 17:21:59,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4027 transitions. [2022-11-25 17:21:59,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:59,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4027 transitions. [2022-11-25 17:21:59,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 335.5833333333333) internal successors, (4027), 12 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 711.0) internal successors, (9243), 13 states have internal predecessors, (9243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,539 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 711.0) internal successors, (9243), 13 states have internal predecessors, (9243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,539 INFO L175 Difference]: Start difference. First operand has 176 places, 170 transitions, 402 flow. Second operand 12 states and 4027 transitions. [2022-11-25 17:21:59,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 176 transitions, 586 flow [2022-11-25 17:21:59,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 176 transitions, 572 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:59,545 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 472 flow [2022-11-25 17:21:59,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=472, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2022-11-25 17:21:59,546 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 28 predicate places. [2022-11-25 17:21:59,546 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 472 flow [2022-11-25 17:21:59,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 330.38461538461536) internal successors, (4295), 13 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:59,549 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:21:59,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:59,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_689f902c-ff49-4b33-86a1-f2d5aee5ea79/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:59,755 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)] === [2022-11-25 17:21:59,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:59,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1510569880, now seen corresponding path program 3 times [2022-11-25 17:21:59,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:59,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815567081] [2022-11-25 17:21:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:59,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:59,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:59,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:59,809 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:21:59,809 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-25 17:21:59,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-25 17:21:59,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-25 17:21:59,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-25 17:21:59,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-25 17:21:59,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-25 17:21:59,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-25 17:21:59,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-25 17:21:59,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-25 17:21:59,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-25 17:21:59,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-25 17:21:59,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-25 17:21:59,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-25 17:21:59,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-25 17:21:59,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-25 17:21:59,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-25 17:21:59,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-25 17:21:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-25 17:21:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-25 17:21:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-25 17:21:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-25 17:21:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-25 17:21:59,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:21:59,814 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-11-25 17:21:59,815 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:21:59,815 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:21:59,868 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:21:59,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 488 transitions, 1006 flow [2022-11-25 17:22:00,080 INFO L130 PetriNetUnfolder]: 110/928 cut-off events. [2022-11-25 17:22:00,080 INFO L131 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2022-11-25 17:22:00,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 928 events. 110/928 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5114 event pairs, 1 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 641. Up to 16 conditions per place. [2022-11-25 17:22:00,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 488 transitions, 1006 flow [2022-11-25 17:22:00,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 488 transitions, 1006 flow [2022-11-25 17:22:00,106 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:22:00,106 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 436 places, 488 transitions, 1006 flow [2022-11-25 17:22:00,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 436 places, 488 transitions, 1006 flow [2022-11-25 17:22:00,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 488 transitions, 1006 flow [2022-11-25 17:22:00,330 INFO L130 PetriNetUnfolder]: 110/928 cut-off events. [2022-11-25 17:22:00,330 INFO L131 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2022-11-25 17:22:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 928 events. 110/928 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5114 event pairs, 1 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 641. Up to 16 conditions per place. [2022-11-25 17:22:00,427 INFO L119 LiptonReduction]: Number of co-enabled transitions 146280 [2022-11-25 17:22:14,347 INFO L134 LiptonReduction]: Checked pairs total: 1197810 [2022-11-25 17:22:14,347 INFO L136 LiptonReduction]: Total number of compositions: 428 [2022-11-25 17:22:14,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:22:14,350 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;@69012c5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:22:14,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-25 17:22:14,358 INFO L130 PetriNetUnfolder]: 26/98 cut-off events. [2022-11-25 17:22:14,359 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:22:14,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:22:14,359 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:22:14,359 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)] === [2022-11-25 17:22:14,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:22:14,360 INFO L85 PathProgramCache]: Analyzing trace with hash -143172861, now seen corresponding path program 1 times [2022-11-25 17:22:14,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:22:14,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647874715] [2022-11-25 17:22:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:22:14,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:22:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:22:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:22:14,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:22:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647874715] [2022-11-25 17:22:14,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647874715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:22:14,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:22:14,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:22:14,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107658052] [2022-11-25 17:22:14,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:22:14,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:22:14,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:22:14,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:22:14,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:22:14,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 916 [2022-11-25 17:22:14,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 255 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:14,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:22:14,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 916 [2022-11-25 17:22:14,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand