./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.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_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/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_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/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_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --- 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 20:56:54,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:54,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:54,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:54,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:54,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:54,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:54,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:54,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:54,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:54,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:54,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:54,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:54,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:54,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:54,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:54,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:54,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:54,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:54,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:54,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:54,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:54,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:54,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:54,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:54,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:54,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:54,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:54,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:54,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:54,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:54,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:54,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:54,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:54,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:54,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:54,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:54,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:54,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:54,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:54,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:54,927 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:56:54,963 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:54,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:54,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:54,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:54,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:54,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:54,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:54,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:54,969 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:54,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:54,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:54,971 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:56:54,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:54,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:54,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:54,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:56:54,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:54,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:56:54,972 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:56:54,972 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:54,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:54,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:54,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:56:54,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:54,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:54,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:54,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:54,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:54,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:54,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:56:54,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:54,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:56:54,975 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:56:54,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:56:54,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:56:54,975 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_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 [2022-11-02 20:56:55,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:55,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:55,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:55,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:55,330 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:55,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-11-02 20:56:55,404 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/data/556fcb449/69c4f3acdaeb48b69ef7aaafcd4002ee/FLAG54740b6fd [2022-11-02 20:56:55,973 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:55,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-11-02 20:56:55,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/data/556fcb449/69c4f3acdaeb48b69ef7aaafcd4002ee/FLAG54740b6fd [2022-11-02 20:56:56,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/data/556fcb449/69c4f3acdaeb48b69ef7aaafcd4002ee [2022-11-02 20:56:56,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:56,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:56,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:56,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:56,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:56,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ae432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56, skipping insertion in model container [2022-11-02 20:56:56,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:56,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:56,745 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_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-11-02 20:56:56,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:56,777 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:56,811 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_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-11-02 20:56:56,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:56,853 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:56,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56 WrapperNode [2022-11-02 20:56:56,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:56,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:56,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:56,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:56,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,897 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2022-11-02 20:56:56,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:56,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:56,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:56,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:56,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,936 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:56,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:56,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:56,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:56,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (1/1) ... [2022-11-02 20:56:56,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:56,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:57,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:57,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:56:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:56:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:56:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:56:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:56:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 20:56:57,056 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 20:56:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:56:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:56:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:57,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:57,059 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 20:56:57,227 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:57,230 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:57,589 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:57,597 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:57,597 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-02 20:56:57,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:57 BoogieIcfgContainer [2022-11-02 20:56:57,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:57,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:57,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:57,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:57,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:56" (1/3) ... [2022-11-02 20:56:57,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76232b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:57, skipping insertion in model container [2022-11-02 20:56:57,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:56" (2/3) ... [2022-11-02 20:56:57,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76232b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:57, skipping insertion in model container [2022-11-02 20:56:57,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:57" (3/3) ... [2022-11-02 20:56:57,636 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2022-11-02 20:56:57,646 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:56:57,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:57,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-02 20:56:57,658 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:56:57,745 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:56:57,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 354 flow [2022-11-02 20:56:57,889 INFO L130 PetriNetUnfolder]: 30/255 cut-off events. [2022-11-02 20:56:57,890 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:56:57,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 255 events. 30/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1020 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2022-11-02 20:56:57,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 173 transitions, 354 flow [2022-11-02 20:56:57,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 173 transitions, 354 flow [2022-11-02 20:56:57,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:57,922 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;@1ebfa78a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:57,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-02 20:56:57,949 INFO L130 PetriNetUnfolder]: 3/54 cut-off events. [2022-11-02 20:56:57,949 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:56:57,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:57,951 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] [2022-11-02 20:56:57,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 20:56:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1888218792, now seen corresponding path program 1 times [2022-11-02 20:56:57,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:57,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445423177] [2022-11-02 20:56:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:58,267 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 20:56:58,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:58,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445423177] [2022-11-02 20:56:58,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445423177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:58,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:58,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:58,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084599510] [2022-11-02 20:56:58,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:58,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:56:58,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:58,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:56:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:58,330 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 173 [2022-11-02 20:56:58,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 173 transitions, 354 flow. Second operand has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 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 20:56:58,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:58,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 173 [2022-11-02 20:56:58,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:58,448 INFO L130 PetriNetUnfolder]: 2/225 cut-off events. [2022-11-02 20:56:58,449 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:56:58,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 225 events. 2/225 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 443 event pairs, 0 based on Foata normal form. 28/229 useless extension candidates. Maximal degree in co-relation 121. Up to 3 conditions per place. [2022-11-02 20:56:58,455 INFO L137 encePairwiseOnDemand]: 156/173 looper letters, 2 selfloop transitions, 0 changer transitions 0/155 dead transitions. [2022-11-02 20:56:58,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 155 transitions, 322 flow [2022-11-02 20:56:58,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:56:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 325 transitions. [2022-11-02 20:56:58,478 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9393063583815029 [2022-11-02 20:56:58,479 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 325 transitions. [2022-11-02 20:56:58,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 325 transitions. [2022-11-02 20:56:58,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:58,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 325 transitions. [2022-11-02 20:56:58,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 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 20:56:58,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 20:56:58,495 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 20:56:58,497 INFO L175 Difference]: Start difference. First operand has 157 places, 173 transitions, 354 flow. Second operand 2 states and 325 transitions. [2022-11-02 20:56:58,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 155 transitions, 322 flow [2022-11-02 20:56:58,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 155 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:56:58,508 INFO L231 Difference]: Finished difference. Result has 157 places, 155 transitions, 318 flow [2022-11-02 20:56:58,511 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=318, PETRI_PLACES=157, PETRI_TRANSITIONS=155} [2022-11-02 20:56:58,515 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 0 predicate places. [2022-11-02 20:56:58,515 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 155 transitions, 318 flow [2022-11-02 20:56:58,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 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 20:56:58,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:58,517 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] [2022-11-02 20:56:58,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:56:58,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 20:56:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1916847943, now seen corresponding path program 1 times [2022-11-02 20:56:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:58,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993019555] [2022-11-02 20:56:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:58,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:58,711 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 20:56:58,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:58,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993019555] [2022-11-02 20:56:58,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993019555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:58,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:58,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:58,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136534312] [2022-11-02 20:56:58,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:58,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:58,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:58,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:58,721 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 173 [2022-11-02 20:56:58,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 155 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 20:56:58,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:58,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 173 [2022-11-02 20:56:58,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:58,785 INFO L130 PetriNetUnfolder]: 1/174 cut-off events. [2022-11-02 20:56:58,785 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:56:58,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 174 events. 1/174 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 180 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 189. Up to 7 conditions per place. [2022-11-02 20:56:58,788 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 9 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-11-02 20:56:58,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 157 transitions, 344 flow [2022-11-02 20:56:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2022-11-02 20:56:58,790 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8670520231213873 [2022-11-02 20:56:58,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2022-11-02 20:56:58,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2022-11-02 20:56:58,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:58,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2022-11-02 20:56:58,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 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 20:56:58,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 20:56:58,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 20:56:58,796 INFO L175 Difference]: Start difference. First operand has 157 places, 155 transitions, 318 flow. Second operand 3 states and 450 transitions. [2022-11-02 20:56:58,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 157 transitions, 344 flow [2022-11-02 20:56:58,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 157 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:56:58,800 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 326 flow [2022-11-02 20:56:58,801 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2022-11-02 20:56:58,802 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 3 predicate places. [2022-11-02 20:56:58,802 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 326 flow [2022-11-02 20:56:58,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 20:56:58,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:58,803 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] [2022-11-02 20:56:58,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:56:58,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 20:56:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1786471726, now seen corresponding path program 1 times [2022-11-02 20:56:58,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:58,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37735253] [2022-11-02 20:56:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:58,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:58,878 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 20:56:58,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:58,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37735253] [2022-11-02 20:56:58,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37735253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:58,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:58,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:58,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649060978] [2022-11-02 20:56:58,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:58,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:58,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:58,885 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 173 [2022-11-02 20:56:58,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 20:56:58,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:58,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 173 [2022-11-02 20:56:58,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:59,219 INFO L130 PetriNetUnfolder]: 235/1566 cut-off events. [2022-11-02 20:56:59,219 INFO L131 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2022-11-02 20:56:59,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2114 conditions, 1566 events. 235/1566 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10656 event pairs, 78 based on Foata normal form. 1/1358 useless extension candidates. Maximal degree in co-relation 2108. Up to 284 conditions per place. [2022-11-02 20:56:59,232 INFO L137 encePairwiseOnDemand]: 151/173 looper letters, 41 selfloop transitions, 16 changer transitions 0/180 dead transitions. [2022-11-02 20:56:59,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 180 transitions, 493 flow [2022-11-02 20:56:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2022-11-02 20:56:59,235 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8323699421965318 [2022-11-02 20:56:59,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2022-11-02 20:56:59,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2022-11-02 20:56:59,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:59,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2022-11-02 20:56:59,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 20:56:59,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 20:56:59,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 20:56:59,241 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 326 flow. Second operand 3 states and 432 transitions. [2022-11-02 20:56:59,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 180 transitions, 493 flow [2022-11-02 20:56:59,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 180 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:56:59,247 INFO L231 Difference]: Finished difference. Result has 162 places, 171 transitions, 462 flow [2022-11-02 20:56:59,248 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=162, PETRI_TRANSITIONS=171} [2022-11-02 20:56:59,250 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 5 predicate places. [2022-11-02 20:56:59,250 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 171 transitions, 462 flow [2022-11-02 20:56:59,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 20:56:59,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:59,251 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] [2022-11-02 20:56:59,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:59,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 20:56:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash -364949622, now seen corresponding path program 1 times [2022-11-02 20:56:59,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:59,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878417067] [2022-11-02 20:56:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:59,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:59,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:56:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:59,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:56:59,333 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:56:59,334 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-02 20:56:59,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-02 20:56:59,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-02 20:56:59,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-02 20:56:59,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-02 20:56:59,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-02 20:56:59,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-02 20:56:59,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-02 20:56:59,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-02 20:56:59,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-02 20:56:59,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-02 20:56:59,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-02 20:56:59,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-02 20:56:59,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-02 20:56:59,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-02 20:56:59,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-02 20:56:59,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-02 20:56:59,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:56:59,362 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 20:56:59,365 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:56:59,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:56:59,397 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:56:59,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 225 transitions, 468 flow [2022-11-02 20:56:59,477 INFO L130 PetriNetUnfolder]: 51/420 cut-off events. [2022-11-02 20:56:59,478 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:56:59,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 420 events. 51/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1903 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 257. Up to 9 conditions per place. [2022-11-02 20:56:59,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 225 transitions, 468 flow [2022-11-02 20:56:59,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 225 transitions, 468 flow [2022-11-02 20:56:59,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:59,492 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;@1ebfa78a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:59,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-02 20:56:59,500 INFO L130 PetriNetUnfolder]: 3/56 cut-off events. [2022-11-02 20:56:59,500 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:56:59,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:59,500 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] [2022-11-02 20:56:59,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:56:59,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:59,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1511714312, now seen corresponding path program 1 times [2022-11-02 20:56:59,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:59,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918702612] [2022-11-02 20:56:59,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:59,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:59,551 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 20:56:59,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:59,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918702612] [2022-11-02 20:56:59,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918702612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:59,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:59,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607122638] [2022-11-02 20:56:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:59,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:59,555 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 225 [2022-11-02 20:56:59,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 225 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 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 20:56:59,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:59,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 225 [2022-11-02 20:56:59,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:59,642 INFO L130 PetriNetUnfolder]: 4/320 cut-off events. [2022-11-02 20:56:59,642 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-02 20:56:59,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 320 events. 4/320 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 795 event pairs, 0 based on Foata normal form. 68/354 useless extension candidates. Maximal degree in co-relation 219. Up to 16 conditions per place. [2022-11-02 20:56:59,649 INFO L137 encePairwiseOnDemand]: 199/225 looper letters, 13 selfloop transitions, 2 changer transitions 0/205 dead transitions. [2022-11-02 20:56:59,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 205 transitions, 458 flow [2022-11-02 20:56:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:59,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2022-11-02 20:56:59,651 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9125925925925926 [2022-11-02 20:56:59,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2022-11-02 20:56:59,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2022-11-02 20:56:59,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:59,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2022-11-02 20:56:59,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 20:56:59,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 20:56:59,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 20:56:59,657 INFO L175 Difference]: Start difference. First operand has 203 places, 225 transitions, 468 flow. Second operand 3 states and 616 transitions. [2022-11-02 20:56:59,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 205 transitions, 458 flow [2022-11-02 20:56:59,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:56:59,661 INFO L231 Difference]: Finished difference. Result has 205 places, 202 transitions, 432 flow [2022-11-02 20:56:59,662 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=205, PETRI_TRANSITIONS=202} [2022-11-02 20:56:59,663 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, 2 predicate places. [2022-11-02 20:56:59,663 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 202 transitions, 432 flow [2022-11-02 20:56:59,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 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 20:56:59,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:59,664 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] [2022-11-02 20:56:59,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:56:59,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:56:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:59,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2016901217, now seen corresponding path program 1 times [2022-11-02 20:56:59,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:59,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101434124] [2022-11-02 20:56:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:59,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:59,701 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 20:56:59,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:59,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101434124] [2022-11-02 20:56:59,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101434124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:59,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:59,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:59,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319001074] [2022-11-02 20:56:59,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:59,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:59,705 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 225 [2022-11-02 20:56:59,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 202 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 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 20:56:59,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:59,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 225 [2022-11-02 20:56:59,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:05,427 INFO L130 PetriNetUnfolder]: 9957/36270 cut-off events. [2022-11-02 20:57:05,427 INFO L131 PetriNetUnfolder]: For 491/633 co-relation queries the response was YES. [2022-11-02 20:57:05,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52690 conditions, 36270 events. 9957/36270 cut-off events. For 491/633 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 453164 event pairs, 4034 based on Foata normal form. 23/30249 useless extension candidates. Maximal degree in co-relation 52640. Up to 9082 conditions per place. [2022-11-02 20:57:05,705 INFO L137 encePairwiseOnDemand]: 192/225 looper letters, 64 selfloop transitions, 24 changer transitions 0/241 dead transitions. [2022-11-02 20:57:05,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 241 transitions, 697 flow [2022-11-02 20:57:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:57:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2022-11-02 20:57:05,708 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8192592592592592 [2022-11-02 20:57:05,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2022-11-02 20:57:05,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2022-11-02 20:57:05,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:05,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2022-11-02 20:57:05,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 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 20:57:05,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 20:57:05,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 20:57:05,714 INFO L175 Difference]: Start difference. First operand has 205 places, 202 transitions, 432 flow. Second operand 3 states and 553 transitions. [2022-11-02 20:57:05,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 241 transitions, 697 flow [2022-11-02 20:57:05,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 241 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:57:05,722 INFO L231 Difference]: Finished difference. Result has 208 places, 226 transitions, 640 flow [2022-11-02 20:57:05,723 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=640, PETRI_PLACES=208, PETRI_TRANSITIONS=226} [2022-11-02 20:57:05,723 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, 5 predicate places. [2022-11-02 20:57:05,724 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 226 transitions, 640 flow [2022-11-02 20:57:05,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 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 20:57:05,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:05,725 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] [2022-11-02 20:57:05,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:57:05,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:57:05,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:05,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1621131938, now seen corresponding path program 1 times [2022-11-02 20:57:05,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:05,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705966922] [2022-11-02 20:57:05,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:05,889 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 20:57:05,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:05,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705966922] [2022-11-02 20:57:05,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705966922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:05,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649576232] [2022-11-02 20:57:05,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:05,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:05,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:05,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:05,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:57:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:05,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:57:06,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:06,043 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 20:57:06,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:06,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649576232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:06,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:57:06,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:57:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621194369] [2022-11-02 20:57:06,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:06,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:06,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:06,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:57:06,055 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 225 [2022-11-02 20:57:06,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 226 transitions, 640 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 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 20:57:06,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:06,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 225 [2022-11-02 20:57:06,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:11,461 INFO L130 PetriNetUnfolder]: 12215/42810 cut-off events. [2022-11-02 20:57:11,462 INFO L131 PetriNetUnfolder]: For 16949/19702 co-relation queries the response was YES. [2022-11-02 20:57:11,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80574 conditions, 42810 events. 12215/42810 cut-off events. For 16949/19702 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 540243 event pairs, 5508 based on Foata normal form. 95/37839 useless extension candidates. Maximal degree in co-relation 77500. Up to 17815 conditions per place. [2022-11-02 20:57:11,837 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 100 selfloop transitions, 24 changer transitions 0/274 dead transitions. [2022-11-02 20:57:11,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 274 transitions, 1092 flow [2022-11-02 20:57:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:57:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2022-11-02 20:57:11,839 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7881481481481482 [2022-11-02 20:57:11,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2022-11-02 20:57:11,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2022-11-02 20:57:11,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:11,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2022-11-02 20:57:11,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 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 20:57:11,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 20:57:11,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 20:57:11,844 INFO L175 Difference]: Start difference. First operand has 208 places, 226 transitions, 640 flow. Second operand 3 states and 532 transitions. [2022-11-02 20:57:11,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 274 transitions, 1092 flow [2022-11-02 20:57:11,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 274 transitions, 1012 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:57:11,876 INFO L231 Difference]: Finished difference. Result has 210 places, 248 transitions, 818 flow [2022-11-02 20:57:11,877 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=818, PETRI_PLACES=210, PETRI_TRANSITIONS=248} [2022-11-02 20:57:11,878 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, 7 predicate places. [2022-11-02 20:57:11,878 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 248 transitions, 818 flow [2022-11-02 20:57:11,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 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 20:57:11,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:11,879 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] [2022-11-02 20:57:11,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:12,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb19449c-1f8d-4acf-b8c7-c3ebd1c75be0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:12,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:57:12,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:12,111 INFO L85 PathProgramCache]: Analyzing trace with hash 83973040, now seen corresponding path program 1 times [2022-11-02 20:57:12,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:12,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022643338] [2022-11-02 20:57:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:12,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:12,179 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 20:57:12,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:12,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022643338] [2022-11-02 20:57:12,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022643338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:12,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:12,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:57:12,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372908469] [2022-11-02 20:57:12,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:12,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:12,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:12,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:12,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:12,186 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 225 [2022-11-02 20:57:12,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 248 transitions, 818 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 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 20:57:12,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:12,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 225 [2022-11-02 20:57:12,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:15,319 INFO L130 PetriNetUnfolder]: 5712/28003 cut-off events. [2022-11-02 20:57:15,319 INFO L131 PetriNetUnfolder]: For 5703/6742 co-relation queries the response was YES. [2022-11-02 20:57:15,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45281 conditions, 28003 events. 5712/28003 cut-off events. For 5703/6742 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 366648 event pairs, 2289 based on Foata normal form. 143/24638 useless extension candidates. Maximal degree in co-relation 43302. Up to 4667 conditions per place. [2022-11-02 20:57:15,478 INFO L137 encePairwiseOnDemand]: 214/225 looper letters, 28 selfloop transitions, 9 changer transitions 0/261 dead transitions. [2022-11-02 20:57:15,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 261 transitions, 920 flow [2022-11-02 20:57:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:57:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2022-11-02 20:57:15,481 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-11-02 20:57:15,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2022-11-02 20:57:15,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2022-11-02 20:57:15,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:15,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2022-11-02 20:57:15,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 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 20:57:15,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 20:57:15,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 20:57:15,487 INFO L175 Difference]: Start difference. First operand has 210 places, 248 transitions, 818 flow. Second operand 3 states and 576 transitions. [2022-11-02 20:57:15,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 261 transitions, 920 flow [2022-11-02 20:57:15,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 261 transitions, 872 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:57:15,515 INFO L231 Difference]: Finished difference. Result has 211 places, 253 transitions, 830 flow [2022-11-02 20:57:15,516 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=830, PETRI_PLACES=211, PETRI_TRANSITIONS=253} [2022-11-02 20:57:15,517 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, 8 predicate places. [2022-11-02 20:57:15,517 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 253 transitions, 830 flow [2022-11-02 20:57:15,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 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 20:57:15,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:15,518 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:15,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:57:15,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:57:15,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:15,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1644990423, now seen corresponding path program 1 times [2022-11-02 20:57:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:15,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938579583] [2022-11-02 20:57:15,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:15,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:15,548 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:15,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:15,582 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:57:15,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-02 20:57:15,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-02 20:57:15,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-02 20:57:15,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-02 20:57:15,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-02 20:57:15,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-02 20:57:15,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-02 20:57:15,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-02 20:57:15,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-02 20:57:15,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-02 20:57:15,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-02 20:57:15,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-02 20:57:15,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-02 20:57:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-02 20:57:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-02 20:57:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-02 20:57:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-02 20:57:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-02 20:57:15,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-02 20:57:15,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-02 20:57:15,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-02 20:57:15,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-02 20:57:15,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:57:15,591 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:57:15,592 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:57:15,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:57:15,641 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:57:15,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 277 transitions, 584 flow [2022-11-02 20:57:15,738 INFO L130 PetriNetUnfolder]: 77/630 cut-off events. [2022-11-02 20:57:15,738 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:57:15,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 630 events. 77/630 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3034 event pairs, 1 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 428. Up to 16 conditions per place. [2022-11-02 20:57:15,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 277 transitions, 584 flow [2022-11-02 20:57:15,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 277 transitions, 584 flow [2022-11-02 20:57:15,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:15,756 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;@1ebfa78a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:15,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-02 20:57:15,760 INFO L130 PetriNetUnfolder]: 3/53 cut-off events. [2022-11-02 20:57:15,760 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:57:15,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:15,761 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] [2022-11-02 20:57:15,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:57:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash -981819938, now seen corresponding path program 1 times [2022-11-02 20:57:15,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:15,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64058062] [2022-11-02 20:57:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:15,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:15,780 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 20:57:15,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:15,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64058062] [2022-11-02 20:57:15,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64058062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:15,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:15,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238385759] [2022-11-02 20:57:15,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:15,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:57:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:57:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:57:15,788 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 277 [2022-11-02 20:57:15,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 277 transitions, 584 flow. Second operand has 2 states, 2 states have (on average 241.5) internal successors, (483), 2 states have internal predecessors, (483), 0 states have call successors, (0), 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 20:57:15,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:15,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 277 [2022-11-02 20:57:15,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:15,897 INFO L130 PetriNetUnfolder]: 11/560 cut-off events. [2022-11-02 20:57:15,897 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-02 20:57:15,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 560 events. 11/560 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2141 event pairs, 1 based on Foata normal form. 126/624 useless extension candidates. Maximal degree in co-relation 385. Up to 16 conditions per place. [2022-11-02 20:57:15,907 INFO L137 encePairwiseOnDemand]: 248/277 looper letters, 6 selfloop transitions, 0 changer transitions 0/247 dead transitions. [2022-11-02 20:57:15,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 247 transitions, 536 flow [2022-11-02 20:57:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:57:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:57:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 517 transitions. [2022-11-02 20:57:15,909 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9332129963898917 [2022-11-02 20:57:15,910 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 517 transitions. [2022-11-02 20:57:15,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 517 transitions. [2022-11-02 20:57:15,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:15,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 517 transitions. [2022-11-02 20:57:15,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 258.5) internal successors, (517), 2 states have internal predecessors, (517), 0 states have call successors, (0), 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 20:57:15,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 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 20:57:15,914 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 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 20:57:15,914 INFO L175 Difference]: Start difference. First operand has 249 places, 277 transitions, 584 flow. Second operand 2 states and 517 transitions. [2022-11-02 20:57:15,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 247 transitions, 536 flow [2022-11-02 20:57:15,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 247 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:57:15,919 INFO L231 Difference]: Finished difference. Result has 249 places, 247 transitions, 524 flow [2022-11-02 20:57:15,919 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=524, PETRI_PLACES=249, PETRI_TRANSITIONS=247} [2022-11-02 20:57:15,922 INFO L287 CegarLoopForPetriNet]: 249 programPoint places, 0 predicate places. [2022-11-02 20:57:15,923 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 247 transitions, 524 flow [2022-11-02 20:57:15,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 241.5) internal successors, (483), 2 states have internal predecessors, (483), 0 states have call successors, (0), 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 20:57:15,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:15,923 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] [2022-11-02 20:57:15,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:57:15,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:57:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash -953190787, now seen corresponding path program 1 times [2022-11-02 20:57:15,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:15,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836431995] [2022-11-02 20:57:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:15,963 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 20:57:15,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:15,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836431995] [2022-11-02 20:57:15,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836431995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:15,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:15,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:57:15,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624859798] [2022-11-02 20:57:15,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:15,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:15,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:15,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:15,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:15,966 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 277 [2022-11-02 20:57:15,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 247 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:15,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:15,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 277 [2022-11-02 20:57:15,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:16,083 INFO L130 PetriNetUnfolder]: 10/509 cut-off events. [2022-11-02 20:57:16,083 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-02 20:57:16,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 509 events. 10/509 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1794 event pairs, 1 based on Foata normal form. 0/454 useless extension candidates. Maximal degree in co-relation 567. Up to 30 conditions per place. [2022-11-02 20:57:16,092 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 15 selfloop transitions, 2 changer transitions 0/251 dead transitions. [2022-11-02 20:57:16,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 251 transitions, 566 flow [2022-11-02 20:57:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:57:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions. [2022-11-02 20:57:16,095 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8664259927797834 [2022-11-02 20:57:16,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions. [2022-11-02 20:57:16,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions. [2022-11-02 20:57:16,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:16,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions. [2022-11-02 20:57:16,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 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 20:57:16,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 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 20:57:16,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 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 20:57:16,101 INFO L175 Difference]: Start difference. First operand has 249 places, 247 transitions, 524 flow. Second operand 3 states and 720 transitions. [2022-11-02 20:57:16,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 251 transitions, 566 flow [2022-11-02 20:57:16,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 251 transitions, 566 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:57:16,106 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 536 flow [2022-11-02 20:57:16,107 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=536, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2022-11-02 20:57:16,108 INFO L287 CegarLoopForPetriNet]: 249 programPoint places, 3 predicate places. [2022-11-02 20:57:16,108 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 536 flow [2022-11-02 20:57:16,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:16,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:16,111 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] [2022-11-02 20:57:16,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:57:16,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:57:16,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:16,112 INFO L85 PathProgramCache]: Analyzing trace with hash 431837704, now seen corresponding path program 1 times [2022-11-02 20:57:16,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:16,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691797498] [2022-11-02 20:57:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:16,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:16,146 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 20:57:16,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:16,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691797498] [2022-11-02 20:57:16,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691797498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:16,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:16,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:16,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021071527] [2022-11-02 20:57:16,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:16,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:16,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:16,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:16,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:16,150 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 277 [2022-11-02 20:57:16,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 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 20:57:16,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:16,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 277 [2022-11-02 20:57:16,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand