./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc --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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- 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-5e519f3 [2022-11-02 21:11:33,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:11:33,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:11:33,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:11:33,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:11:33,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:11:33,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:11:33,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:11:33,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:11:33,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:11:33,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:11:33,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:11:33,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:11:33,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:11:33,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:11:33,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:11:33,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:11:33,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:11:33,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:11:33,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:11:33,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:11:33,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:11:33,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:11:33,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:11:33,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:11:33,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:11:33,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:11:33,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:11:33,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:11:33,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:11:33,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:11:33,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:11:33,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:11:33,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:11:33,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:11:33,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:11:33,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:11:33,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:11:33,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:11:33,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:11:33,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:11:33,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 21:11:33,478 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:11:33,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:11:33,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:11:33,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:11:33,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:11:33,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:11:33,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:11:33,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:11:33,480 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:11:33,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:11:33,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:11:33,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:11:33,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:11:33,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:11:33,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:11:33,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:11:33,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:11:33,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:11:33,482 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 21:11:33,482 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:11:33,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:11:33,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:11:33,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:11:33,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:11:33,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:11:33,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:11:33,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:33,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:11:33,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:11:33,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:11:33,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:11:33,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:11:33,490 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:11:33,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:11:33,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:11:33,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2022-11-02 21:11:33,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:11:33,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:11:33,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:11:33,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:11:33,890 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:11:33,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-02 21:11:33,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/data/35c9cc0de/23b38ad32ace488cb9d486d8e24d1de1/FLAGe58f6564d [2022-11-02 21:11:34,501 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:11:34,502 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-02 21:11:34,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/data/35c9cc0de/23b38ad32ace488cb9d486d8e24d1de1/FLAGe58f6564d [2022-11-02 21:11:34,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/data/35c9cc0de/23b38ad32ace488cb9d486d8e24d1de1 [2022-11-02 21:11:34,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:11:34,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:11:34,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:34,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:11:34,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:11:34,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:34" (1/1) ... [2022-11-02 21:11:34,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635f026f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:34, skipping insertion in model container [2022-11-02 21:11:34,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:34" (1/1) ... [2022-11-02 21:11:34,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:11:34,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:11:35,392 WARN L230 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_1ed550a3-76e9-4a3d-987d-b5049512b701/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-02 21:11:35,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:35,471 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:11:35,525 WARN L230 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_1ed550a3-76e9-4a3d-987d-b5049512b701/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-02 21:11:35,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:35,621 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:11:35,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35 WrapperNode [2022-11-02 21:11:35,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:35,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:35,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:11:35,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:11:35,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,713 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 249 [2022-11-02 21:11:35,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:35,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:11:35,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:11:35,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:11:35,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,789 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:11:35,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:11:35,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:11:35,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:11:35,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (1/1) ... [2022-11-02 21:11:35,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:35,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:35,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:11:35,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:11:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:11:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:11:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:11:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:11:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 21:11:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:11:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 21:11:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 21:11:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:11:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:11:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:11:35,890 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:11:36,109 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:11:36,111 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:11:36,608 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:11:36,616 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:11:36,617 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-02 21:11:36,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:36 BoogieIcfgContainer [2022-11-02 21:11:36,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:11:36,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:11:36,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:11:36,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:11:36,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:11:34" (1/3) ... [2022-11-02 21:11:36,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70517e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:36, skipping insertion in model container [2022-11-02 21:11:36,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:35" (2/3) ... [2022-11-02 21:11:36,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70517e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:36, skipping insertion in model container [2022-11-02 21:11:36,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:36" (3/3) ... [2022-11-02 21:11:36,639 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2022-11-02 21:11:36,648 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:11:36,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:11:36,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-02 21:11:36,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:11:36,778 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 21:11:36,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 269 transitions, 546 flow [2022-11-02 21:11:37,016 INFO L130 PetriNetUnfolder]: 45/380 cut-off events. [2022-11-02 21:11:37,016 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:11:37,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 380 events. 45/380 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1556 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2022-11-02 21:11:37,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 269 transitions, 546 flow [2022-11-02 21:11:37,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 269 transitions, 546 flow [2022-11-02 21:11:37,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:11:37,080 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;@1f2a3a24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:11:37,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-02 21:11:37,110 INFO L130 PetriNetUnfolder]: 11/117 cut-off events. [2022-11-02 21:11:37,111 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:11:37,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:37,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:37,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 21:11:37,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1502378994, now seen corresponding path program 1 times [2022-11-02 21:11:37,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:37,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887147891] [2022-11-02 21:11:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:37,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:37,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:37,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887147891] [2022-11-02 21:11:37,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887147891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:37,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:37,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:11:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662652702] [2022-11-02 21:11:37,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:11:37,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:37,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:11:37,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:11:37,450 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 269 [2022-11-02 21:11:37,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 269 transitions, 546 flow. Second operand has 2 states, 2 states have (on average 239.0) internal successors, (478), 2 states have internal predecessors, (478), 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) [2022-11-02 21:11:37,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:37,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 269 [2022-11-02 21:11:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:37,570 INFO L130 PetriNetUnfolder]: 5/337 cut-off events. [2022-11-02 21:11:37,570 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:11:37,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 337 events. 5/337 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1149 event pairs, 0 based on Foata normal form. 40/347 useless extension candidates. Maximal degree in co-relation 194. Up to 4 conditions per place. [2022-11-02 21:11:37,578 INFO L137 encePairwiseOnDemand]: 242/269 looper letters, 2 selfloop transitions, 0 changer transitions 1/240 dead transitions. [2022-11-02 21:11:37,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 240 transitions, 492 flow [2022-11-02 21:11:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:11:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:11:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 505 transitions. [2022-11-02 21:11:37,603 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9386617100371747 [2022-11-02 21:11:37,604 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 505 transitions. [2022-11-02 21:11:37,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 505 transitions. [2022-11-02 21:11:37,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:37,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 505 transitions. [2022-11-02 21:11:37,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 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) [2022-11-02 21:11:37,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-11-02 21:11:37,628 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-11-02 21:11:37,630 INFO L175 Difference]: Start difference. First operand has 241 places, 269 transitions, 546 flow. Second operand 2 states and 505 transitions. [2022-11-02 21:11:37,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 240 transitions, 492 flow [2022-11-02 21:11:37,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 240 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:11:37,648 INFO L231 Difference]: Finished difference. Result has 240 places, 239 transitions, 486 flow [2022-11-02 21:11:37,651 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=486, PETRI_PLACES=240, PETRI_TRANSITIONS=239} [2022-11-02 21:11:37,656 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, -1 predicate places. [2022-11-02 21:11:37,656 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 239 transitions, 486 flow [2022-11-02 21:11:37,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 239.0) internal successors, (478), 2 states have internal predecessors, (478), 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) [2022-11-02 21:11:37,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:37,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:37,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:11:37,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 21:11:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1970218836, now seen corresponding path program 1 times [2022-11-02 21:11:37,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:37,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184486988] [2022-11-02 21:11:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:37,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:37,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:37,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184486988] [2022-11-02 21:11:37,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184486988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:37,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:37,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:37,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668086857] [2022-11-02 21:11:37,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:37,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:37,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:37,909 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 269 [2022-11-02 21:11:37,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 239 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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) [2022-11-02 21:11:37,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:37,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 269 [2022-11-02 21:11:37,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:37,997 INFO L130 PetriNetUnfolder]: 5/340 cut-off events. [2022-11-02 21:11:37,998 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:11:38,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 340 events. 5/340 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1143 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 357. Up to 10 conditions per place. [2022-11-02 21:11:38,002 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 11 selfloop transitions, 2 changer transitions 0/243 dead transitions. [2022-11-02 21:11:38,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 520 flow [2022-11-02 21:11:38,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:11:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2022-11-02 21:11:38,007 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8760842627013631 [2022-11-02 21:11:38,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2022-11-02 21:11:38,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2022-11-02 21:11:38,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:38,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2022-11-02 21:11:38,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:38,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2022-11-02 21:11:38,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2022-11-02 21:11:38,019 INFO L175 Difference]: Start difference. First operand has 240 places, 239 transitions, 486 flow. Second operand 3 states and 707 transitions. [2022-11-02 21:11:38,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 520 flow [2022-11-02 21:11:38,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:11:38,026 INFO L231 Difference]: Finished difference. Result has 242 places, 240 transitions, 498 flow [2022-11-02 21:11:38,026 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2022-11-02 21:11:38,027 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 1 predicate places. [2022-11-02 21:11:38,028 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 498 flow [2022-11-02 21:11:38,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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) [2022-11-02 21:11:38,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:38,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:38,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:11:38,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 21:11:38,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash 566872329, now seen corresponding path program 1 times [2022-11-02 21:11:38,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:38,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91358407] [2022-11-02 21:11:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:38,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91358407] [2022-11-02 21:11:38,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91358407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:38,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56922753] [2022-11-02 21:11:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:38,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:38,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:38,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:11:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:38,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:11:38,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:11:38,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:38,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56922753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:38,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:11:38,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 21:11:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19496509] [2022-11-02 21:11:38,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:38,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:38,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:38,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:11:38,513 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 269 [2022-11-02 21:11:38,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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) [2022-11-02 21:11:38,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:38,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 269 [2022-11-02 21:11:38,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:38,638 INFO L130 PetriNetUnfolder]: 3/262 cut-off events. [2022-11-02 21:11:38,638 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:11:38,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 262 events. 3/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 569 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 282. Up to 7 conditions per place. [2022-11-02 21:11:38,643 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 9 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-11-02 21:11:38,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 242 transitions, 524 flow [2022-11-02 21:11:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:11:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-11-02 21:11:38,647 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8736059479553904 [2022-11-02 21:11:38,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-11-02 21:11:38,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-11-02 21:11:38,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:38,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-11-02 21:11:38,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:38,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2022-11-02 21:11:38,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2022-11-02 21:11:38,655 INFO L175 Difference]: Start difference. First operand has 242 places, 240 transitions, 498 flow. Second operand 3 states and 705 transitions. [2022-11-02 21:11:38,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 242 transitions, 524 flow [2022-11-02 21:11:38,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 242 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:11:38,663 INFO L231 Difference]: Finished difference. Result has 244 places, 240 transitions, 504 flow [2022-11-02 21:11:38,664 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=244, PETRI_TRANSITIONS=240} [2022-11-02 21:11:38,665 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 3 predicate places. [2022-11-02 21:11:38,665 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 240 transitions, 504 flow [2022-11-02 21:11:38,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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) [2022-11-02 21:11:38,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:38,666 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:38,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:38,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:38,890 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)] === [2022-11-02 21:11:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash 232809126, now seen corresponding path program 1 times [2022-11-02 21:11:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:38,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474644566] [2022-11-02 21:11:38,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:11:39,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:39,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474644566] [2022-11-02 21:11:39,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474644566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:39,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341501881] [2022-11-02 21:11:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:39,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:39,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:39,008 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:39,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:11:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:39,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:11:39,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:11:39,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:11:39,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341501881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:39,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:11:39,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 21:11:39,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345809017] [2022-11-02 21:11:39,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:39,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:11:39,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:11:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:11:39,269 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 269 [2022-11-02 21:11:39,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 240 transitions, 504 flow. Second operand has 10 states, 10 states have (on average 232.1) internal successors, (2321), 10 states have internal predecessors, (2321), 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) [2022-11-02 21:11:39,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:39,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 269 [2022-11-02 21:11:39,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:39,467 INFO L130 PetriNetUnfolder]: 3/269 cut-off events. [2022-11-02 21:11:39,467 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-02 21:11:39,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 269 events. 3/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 564 event pairs, 0 based on Foata normal form. 2/252 useless extension candidates. Maximal degree in co-relation 303. Up to 7 conditions per place. [2022-11-02 21:11:39,471 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 12 selfloop transitions, 9 changer transitions 0/250 dead transitions. [2022-11-02 21:11:39,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 250 transitions, 568 flow [2022-11-02 21:11:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:11:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:11:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2093 transitions. [2022-11-02 21:11:39,506 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8645187938868236 [2022-11-02 21:11:39,506 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2093 transitions. [2022-11-02 21:11:39,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2093 transitions. [2022-11-02 21:11:39,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:39,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2093 transitions. [2022-11-02 21:11:39,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 232.55555555555554) internal successors, (2093), 9 states have internal predecessors, (2093), 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) [2022-11-02 21:11:39,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 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) [2022-11-02 21:11:39,523 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 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) [2022-11-02 21:11:39,523 INFO L175 Difference]: Start difference. First operand has 244 places, 240 transitions, 504 flow. Second operand 9 states and 2093 transitions. [2022-11-02 21:11:39,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 250 transitions, 568 flow [2022-11-02 21:11:39,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 250 transitions, 564 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:11:39,531 INFO L231 Difference]: Finished difference. Result has 253 places, 246 transitions, 550 flow [2022-11-02 21:11:39,532 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=253, PETRI_TRANSITIONS=246} [2022-11-02 21:11:39,534 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 12 predicate places. [2022-11-02 21:11:39,534 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 246 transitions, 550 flow [2022-11-02 21:11:39,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.1) internal successors, (2321), 10 states have internal predecessors, (2321), 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) [2022-11-02 21:11:39,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:39,536 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:39,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:39,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-02 21:11:39,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 21:11:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:39,752 INFO L85 PathProgramCache]: Analyzing trace with hash -507063354, now seen corresponding path program 2 times [2022-11-02 21:11:39,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:39,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627777446] [2022-11-02 21:11:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:39,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:11:39,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:39,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627777446] [2022-11-02 21:11:39,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627777446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:39,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149389379] [2022-11-02 21:11:39,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:11:39,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:39,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:39,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:39,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:11:40,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:11:40,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:40,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:11:40,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:11:40,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:11:40,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149389379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:40,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:11:40,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 21:11:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214525815] [2022-11-02 21:11:40,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:40,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:11:40,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:40,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:11:40,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:11:40,279 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 269 [2022-11-02 21:11:40,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 246 transitions, 550 flow. Second operand has 18 states, 18 states have (on average 232.27777777777777) internal successors, (4181), 18 states have internal predecessors, (4181), 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) [2022-11-02 21:11:40,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:40,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 269 [2022-11-02 21:11:40,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:40,653 INFO L130 PetriNetUnfolder]: 3/289 cut-off events. [2022-11-02 21:11:40,653 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-02 21:11:40,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 289 events. 3/289 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 568 event pairs, 0 based on Foata normal form. 4/274 useless extension candidates. Maximal degree in co-relation 389. Up to 11 conditions per place. [2022-11-02 21:11:40,657 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 20 selfloop transitions, 21 changer transitions 0/270 dead transitions. [2022-11-02 21:11:40,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 270 transitions, 740 flow [2022-11-02 21:11:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:11:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 21:11:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4875 transitions. [2022-11-02 21:11:40,669 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8629845990440786 [2022-11-02 21:11:40,670 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4875 transitions. [2022-11-02 21:11:40,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4875 transitions. [2022-11-02 21:11:40,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:40,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4875 transitions. [2022-11-02 21:11:40,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 232.14285714285714) internal successors, (4875), 21 states have internal predecessors, (4875), 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) [2022-11-02 21:11:40,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 269.0) internal successors, (5918), 22 states have internal predecessors, (5918), 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) [2022-11-02 21:11:40,704 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 269.0) internal successors, (5918), 22 states have internal predecessors, (5918), 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) [2022-11-02 21:11:40,704 INFO L175 Difference]: Start difference. First operand has 253 places, 246 transitions, 550 flow. Second operand 21 states and 4875 transitions. [2022-11-02 21:11:40,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 270 transitions, 740 flow [2022-11-02 21:11:40,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 270 transitions, 726 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-02 21:11:40,713 INFO L231 Difference]: Finished difference. Result has 277 places, 259 transitions, 674 flow [2022-11-02 21:11:40,713 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=674, PETRI_PLACES=277, PETRI_TRANSITIONS=259} [2022-11-02 21:11:40,714 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 36 predicate places. [2022-11-02 21:11:40,714 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 259 transitions, 674 flow [2022-11-02 21:11:40,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.27777777777777) internal successors, (4181), 18 states have internal predecessors, (4181), 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) [2022-11-02 21:11:40,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:40,717 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:40,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:40,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:40,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 21:11:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:40,944 INFO L85 PathProgramCache]: Analyzing trace with hash 437059078, now seen corresponding path program 3 times [2022-11-02 21:11:40,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:40,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923668132] [2022-11-02 21:11:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:40,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:11:41,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:41,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923668132] [2022-11-02 21:11:41,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923668132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:41,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224091159] [2022-11-02 21:11:41,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:11:41,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:41,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:41,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:41,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:11:41,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-02 21:11:41,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:41,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:11:41,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:11:41,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:11:42,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224091159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:42,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:11:42,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-02 21:11:42,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540603929] [2022-11-02 21:11:42,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:42,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 21:11:42,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 21:11:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:11:42,054 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 269 [2022-11-02 21:11:42,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 259 transitions, 674 flow. Second operand has 23 states, 23 states have (on average 232.43478260869566) internal successors, (5346), 23 states have internal predecessors, (5346), 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) [2022-11-02 21:11:42,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:42,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 269 [2022-11-02 21:11:42,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:42,530 INFO L130 PetriNetUnfolder]: 3/304 cut-off events. [2022-11-02 21:11:42,531 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-02 21:11:42,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 304 events. 3/304 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 561 event pairs, 0 based on Foata normal form. 3/288 useless extension candidates. Maximal degree in co-relation 485. Up to 17 conditions per place. [2022-11-02 21:11:42,535 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 26 selfloop transitions, 30 changer transitions 0/285 dead transitions. [2022-11-02 21:11:42,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 285 transitions, 932 flow [2022-11-02 21:11:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:11:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:11:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6959 transitions. [2022-11-02 21:11:42,551 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8623296158612144 [2022-11-02 21:11:42,552 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6959 transitions. [2022-11-02 21:11:42,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6959 transitions. [2022-11-02 21:11:42,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:42,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6959 transitions. [2022-11-02 21:11:42,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 231.96666666666667) internal successors, (6959), 30 states have internal predecessors, (6959), 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) [2022-11-02 21:11:42,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 269.0) internal successors, (8339), 31 states have internal predecessors, (8339), 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) [2022-11-02 21:11:42,620 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 269.0) internal successors, (8339), 31 states have internal predecessors, (8339), 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) [2022-11-02 21:11:42,627 INFO L175 Difference]: Start difference. First operand has 277 places, 259 transitions, 674 flow. Second operand 30 states and 6959 transitions. [2022-11-02 21:11:42,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 285 transitions, 932 flow [2022-11-02 21:11:42,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 285 transitions, 902 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-02 21:11:42,643 INFO L231 Difference]: Finished difference. Result has 304 places, 269 transitions, 802 flow [2022-11-02 21:11:42,644 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=802, PETRI_PLACES=304, PETRI_TRANSITIONS=269} [2022-11-02 21:11:42,647 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 63 predicate places. [2022-11-02 21:11:42,648 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 269 transitions, 802 flow [2022-11-02 21:11:42,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 232.43478260869566) internal successors, (5346), 23 states have internal predecessors, (5346), 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) [2022-11-02 21:11:42,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:42,660 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:42,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 21:11:42,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:42,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 21:11:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash -180968421, now seen corresponding path program 4 times [2022-11-02 21:11:42,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:42,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566119407] [2022-11-02 21:11:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:42,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:42,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:42,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:42,996 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:11:42,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-02 21:11:43,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-02 21:11:43,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-02 21:11:43,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-02 21:11:43,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-02 21:11:43,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-02 21:11:43,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-02 21:11:43,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-02 21:11:43,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-02 21:11:43,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-02 21:11:43,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-02 21:11:43,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-02 21:11:43,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-02 21:11:43,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-02 21:11:43,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-02 21:11:43,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-02 21:11:43,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-02 21:11:43,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:11:43,005 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-02 21:11:43,008 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:11:43,008 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 21:11:43,100 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 21:11:43,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 374 transitions, 766 flow [2022-11-02 21:11:43,266 INFO L130 PetriNetUnfolder]: 75/627 cut-off events. [2022-11-02 21:11:43,266 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 21:11:43,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 627 events. 75/627 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3154 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 382. Up to 12 conditions per place. [2022-11-02 21:11:43,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 374 transitions, 766 flow [2022-11-02 21:11:43,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 374 transitions, 766 flow [2022-11-02 21:11:43,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:11:43,291 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;@1f2a3a24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:11:43,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-02 21:11:43,301 INFO L130 PetriNetUnfolder]: 11/117 cut-off events. [2022-11-02 21:11:43,302 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:11:43,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:43,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:43,302 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)] === [2022-11-02 21:11:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash -26010126, now seen corresponding path program 1 times [2022-11-02 21:11:43,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:43,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263863325] [2022-11-02 21:11:43,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:43,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:43,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:43,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263863325] [2022-11-02 21:11:43,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263863325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:43,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:43,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:11:43,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626633247] [2022-11-02 21:11:43,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:43,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:11:43,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:11:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:11:43,347 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 374 [2022-11-02 21:11:43,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 374 transitions, 766 flow. Second operand has 2 states, 2 states have (on average 329.0) internal successors, (658), 2 states have internal predecessors, (658), 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) [2022-11-02 21:11:43,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:43,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 374 [2022-11-02 21:11:43,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:43,515 INFO L130 PetriNetUnfolder]: 9/556 cut-off events. [2022-11-02 21:11:43,515 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-02 21:11:43,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 556 events. 9/556 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2580 event pairs, 0 based on Foata normal form. 91/597 useless extension candidates. Maximal degree in co-relation 341. Up to 7 conditions per place. [2022-11-02 21:11:43,526 INFO L137 encePairwiseOnDemand]: 335/374 looper letters, 4 selfloop transitions, 0 changer transitions 1/332 dead transitions. [2022-11-02 21:11:43,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 332 transitions, 690 flow [2022-11-02 21:11:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:11:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:11:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 699 transitions. [2022-11-02 21:11:43,529 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9344919786096256 [2022-11-02 21:11:43,529 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 699 transitions. [2022-11-02 21:11:43,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 699 transitions. [2022-11-02 21:11:43,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:43,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 699 transitions. [2022-11-02 21:11:43,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 349.5) internal successors, (699), 2 states have internal predecessors, (699), 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) [2022-11-02 21:11:43,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 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) [2022-11-02 21:11:43,534 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 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) [2022-11-02 21:11:43,534 INFO L175 Difference]: Start difference. First operand has 334 places, 374 transitions, 766 flow. Second operand 2 states and 699 transitions. [2022-11-02 21:11:43,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 332 transitions, 690 flow [2022-11-02 21:11:43,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 332 transitions, 690 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:11:43,542 INFO L231 Difference]: Finished difference. Result has 332 places, 331 transitions, 680 flow [2022-11-02 21:11:43,543 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=680, PETRI_PLACES=332, PETRI_TRANSITIONS=331} [2022-11-02 21:11:43,544 INFO L287 CegarLoopForPetriNet]: 334 programPoint places, -2 predicate places. [2022-11-02 21:11:43,544 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 331 transitions, 680 flow [2022-11-02 21:11:43,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 329.0) internal successors, (658), 2 states have internal predecessors, (658), 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) [2022-11-02 21:11:43,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:43,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:43,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:11:43,545 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)] === [2022-11-02 21:11:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:43,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1834796746, now seen corresponding path program 1 times [2022-11-02 21:11:43,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:43,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897721419] [2022-11-02 21:11:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:43,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:43,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:43,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897721419] [2022-11-02 21:11:43,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897721419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:43,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:43,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:43,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715370874] [2022-11-02 21:11:43,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:43,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:43,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:43,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:43,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:43,590 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 374 [2022-11-02 21:11:43,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 331 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:43,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:43,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 374 [2022-11-02 21:11:43,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:43,749 INFO L130 PetriNetUnfolder]: 9/559 cut-off events. [2022-11-02 21:11:43,749 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-02 21:11:43,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 559 events. 9/559 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2572 event pairs, 0 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 587. Up to 14 conditions per place. [2022-11-02 21:11:43,762 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 13 selfloop transitions, 2 changer transitions 0/335 dead transitions. [2022-11-02 21:11:43,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 335 transitions, 718 flow [2022-11-02 21:11:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:43,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:11:43,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2022-11-02 21:11:43,766 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8725490196078431 [2022-11-02 21:11:43,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2022-11-02 21:11:43,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2022-11-02 21:11:43,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:43,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2022-11-02 21:11:43,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 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) [2022-11-02 21:11:43,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-11-02 21:11:43,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-11-02 21:11:43,774 INFO L175 Difference]: Start difference. First operand has 332 places, 331 transitions, 680 flow. Second operand 3 states and 979 transitions. [2022-11-02 21:11:43,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 335 transitions, 718 flow [2022-11-02 21:11:43,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 335 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:11:43,782 INFO L231 Difference]: Finished difference. Result has 334 places, 332 transitions, 692 flow [2022-11-02 21:11:43,783 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=334, PETRI_TRANSITIONS=332} [2022-11-02 21:11:43,783 INFO L287 CegarLoopForPetriNet]: 334 programPoint places, 0 predicate places. [2022-11-02 21:11:43,784 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 332 transitions, 692 flow [2022-11-02 21:11:43,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:43,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:43,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:43,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:11:43,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:11:43,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1193895753, now seen corresponding path program 1 times [2022-11-02 21:11:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:43,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16127642] [2022-11-02 21:11:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:43,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:43,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:43,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16127642] [2022-11-02 21:11:43,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16127642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:43,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897359982] [2022-11-02 21:11:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:43,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:43,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:43,860 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:43,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:11:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:43,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:11:44,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:11:44,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:44,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897359982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:44,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:11:44,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 21:11:44,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691231925] [2022-11-02 21:11:44,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:44,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:44,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:44,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:11:44,022 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 374 [2022-11-02 21:11:44,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 332 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:44,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:44,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 374 [2022-11-02 21:11:44,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:44,146 INFO L130 PetriNetUnfolder]: 7/481 cut-off events. [2022-11-02 21:11:44,147 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-02 21:11:44,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 481 events. 7/481 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1946 event pairs, 0 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 517. Up to 16 conditions per place. [2022-11-02 21:11:44,159 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 13 selfloop transitions, 2 changer transitions 0/336 dead transitions. [2022-11-02 21:11:44,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 336 transitions, 730 flow [2022-11-02 21:11:44,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:11:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2022-11-02 21:11:44,163 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8725490196078431 [2022-11-02 21:11:44,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2022-11-02 21:11:44,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2022-11-02 21:11:44,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:44,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2022-11-02 21:11:44,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 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) [2022-11-02 21:11:44,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-11-02 21:11:44,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-11-02 21:11:44,170 INFO L175 Difference]: Start difference. First operand has 334 places, 332 transitions, 692 flow. Second operand 3 states and 979 transitions. [2022-11-02 21:11:44,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 336 transitions, 730 flow [2022-11-02 21:11:44,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 336 transitions, 728 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:11:44,178 INFO L231 Difference]: Finished difference. Result has 336 places, 333 transitions, 702 flow [2022-11-02 21:11:44,179 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=336, PETRI_TRANSITIONS=333} [2022-11-02 21:11:44,180 INFO L287 CegarLoopForPetriNet]: 334 programPoint places, 2 predicate places. [2022-11-02 21:11:44,181 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 333 transitions, 702 flow [2022-11-02 21:11:44,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:44,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:44,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:44,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:44,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:44,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:11:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:44,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1330087458, now seen corresponding path program 1 times [2022-11-02 21:11:44,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:44,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158394022] [2022-11-02 21:11:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:44,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:11:44,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:44,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158394022] [2022-11-02 21:11:44,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158394022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:44,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860012090] [2022-11-02 21:11:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:44,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:44,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:44,492 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:44,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:11:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:44,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:11:44,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:11:44,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:11:44,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860012090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:44,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:11:44,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 21:11:44,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764765774] [2022-11-02 21:11:44,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:44,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:11:44,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:11:44,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:11:44,690 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-02 21:11:44,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 333 transitions, 702 flow. Second operand has 10 states, 10 states have (on average 322.1) internal successors, (3221), 10 states have internal predecessors, (3221), 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) [2022-11-02 21:11:44,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:44,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-02 21:11:44,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:44,933 INFO L130 PetriNetUnfolder]: 7/488 cut-off events. [2022-11-02 21:11:44,933 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-02 21:11:44,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 488 events. 7/488 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1945 event pairs, 0 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 535. Up to 11 conditions per place. [2022-11-02 21:11:44,944 INFO L137 encePairwiseOnDemand]: 368/374 looper letters, 14 selfloop transitions, 9 changer transitions 0/343 dead transitions. [2022-11-02 21:11:44,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 343 transitions, 770 flow [2022-11-02 21:11:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:11:44,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:11:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2905 transitions. [2022-11-02 21:11:44,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8630421865715984 [2022-11-02 21:11:44,951 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2905 transitions. [2022-11-02 21:11:44,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2905 transitions. [2022-11-02 21:11:44,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:44,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2905 transitions. [2022-11-02 21:11:44,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 322.77777777777777) internal successors, (2905), 9 states have internal predecessors, (2905), 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) [2022-11-02 21:11:44,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 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) [2022-11-02 21:11:44,966 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 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) [2022-11-02 21:11:44,967 INFO L175 Difference]: Start difference. First operand has 336 places, 333 transitions, 702 flow. Second operand 9 states and 2905 transitions. [2022-11-02 21:11:44,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 343 transitions, 770 flow [2022-11-02 21:11:44,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 343 transitions, 768 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:11:44,975 INFO L231 Difference]: Finished difference. Result has 346 places, 339 transitions, 750 flow [2022-11-02 21:11:44,976 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=346, PETRI_TRANSITIONS=339} [2022-11-02 21:11:44,977 INFO L287 CegarLoopForPetriNet]: 334 programPoint places, 12 predicate places. [2022-11-02 21:11:44,977 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 339 transitions, 750 flow [2022-11-02 21:11:44,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 322.1) internal successors, (3221), 10 states have internal predecessors, (3221), 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) [2022-11-02 21:11:44,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:44,979 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:45,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:45,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:45,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:11:45,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:45,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1821595262, now seen corresponding path program 2 times [2022-11-02 21:11:45,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:45,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384075600] [2022-11-02 21:11:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:45,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:11:45,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:45,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384075600] [2022-11-02 21:11:45,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384075600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:45,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072953644] [2022-11-02 21:11:45,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:11:45,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:45,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:45,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:45,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ed550a3-76e9-4a3d-987d-b5049512b701/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:11:45,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:11:45,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:45,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:11:45,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:45,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 21:11:45,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-02 21:11:45,564 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:11:45,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-02 21:11:45,604 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:11:45,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-02 21:11:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:11:45,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:45,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072953644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:45,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:11:45,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-02 21:11:45,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301407364] [2022-11-02 21:11:45,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:45,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:11:45,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:11:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:11:45,639 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 374 [2022-11-02 21:11:45,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 339 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 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) [2022-11-02 21:11:45,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:45,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 374 [2022-11-02 21:11:45,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand