./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 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_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a --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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- 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-b5237d8 [2022-11-21 17:00:12,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:00:12,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:00:12,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:00:12,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:00:12,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:00:12,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:00:12,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:00:12,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:00:12,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:00:12,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:00:12,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:00:12,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:00:12,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:00:12,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:00:12,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:00:12,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:00:12,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:00:12,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:00:12,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:00:12,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:00:12,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:00:12,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:00:12,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:00:12,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:00:12,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:00:12,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:00:12,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:00:12,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:00:12,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:00:12,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:00:12,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:00:12,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:00:12,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:00:12,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:00:12,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:00:12,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:00:12,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:00:12,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:00:12,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:00:12,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:00:13,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 17:00:13,039 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:00:13,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:00:13,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:00:13,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:00:13,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:00:13,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:00:13,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:00:13,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:00:13,042 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:00:13,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:00:13,043 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:00:13,043 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:00:13,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:00:13,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:00:13,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:00:13,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:00:13,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:00:13,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:00:13,044 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 17:00:13,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:00:13,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:00:13,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:00:13,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:00:13,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:00:13,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:00:13,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:00:13,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:00:13,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:00:13,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:00:13,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:00:13,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:00:13,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:00:13,047 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:00:13,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:00:13,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:00:13,048 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_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2022-11-21 17:00:13,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:00:13,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:00:13,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:00:13,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:00:13,443 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:00:13,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-21 17:00:16,550 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:00:16,872 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:00:16,873 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-21 17:00:16,887 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/data/1c7957f2c/d5c02ba6cec547c9a6af1b17a795b885/FLAGb9bdaaf1b [2022-11-21 17:00:16,903 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/data/1c7957f2c/d5c02ba6cec547c9a6af1b17a795b885 [2022-11-21 17:00:16,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:00:16,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:00:16,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:00:16,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:00:16,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:00:16,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:00:16" (1/1) ... [2022-11-21 17:00:16,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1728a2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:16, skipping insertion in model container [2022-11-21 17:00:16,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:00:16" (1/1) ... [2022-11-21 17:00:16,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:00:16,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:00:17,613 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-21 17:00:17,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:00:17,655 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:00:17,692 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-21 17:00:17,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:00:17,762 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:00:17,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17 WrapperNode [2022-11-21 17:00:17,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:00:17,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:00:17,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:00:17,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:00:17,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,815 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-11-21 17:00:17,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:00:17,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:00:17,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:00:17,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:00:17,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,845 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:00:17,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:00:17,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:00:17,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:00:17,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (1/1) ... [2022-11-21 17:00:17,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:00:17,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:00:17,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:00:17,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:00:17,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:00:17,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:00:17,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:00:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:00:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 17:00:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:00:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 17:00:17,938 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 17:00:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:00:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:00:17,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:00:17,941 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:00:18,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:00:18,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:00:18,445 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:00:18,453 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:00:18,468 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-21 17:00:18,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:00:18 BoogieIcfgContainer [2022-11-21 17:00:18,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:00:18,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:00:18,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:00:18,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:00:18,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:00:16" (1/3) ... [2022-11-21 17:00:18,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7b5ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:00:18, skipping insertion in model container [2022-11-21 17:00:18,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:17" (2/3) ... [2022-11-21 17:00:18,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7b5ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:00:18, skipping insertion in model container [2022-11-21 17:00:18,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:00:18" (3/3) ... [2022-11-21 17:00:18,480 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2022-11-21 17:00:18,489 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:00:18,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:00:18,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 17:00:18,500 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:00:18,575 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-21 17:00:18,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 150 transitions, 308 flow [2022-11-21 17:00:18,689 INFO L130 PetriNetUnfolder]: 23/203 cut-off events. [2022-11-21 17:00:18,689 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 17:00:18,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 203 events. 23/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-11-21 17:00:18,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 150 transitions, 308 flow [2022-11-21 17:00:18,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 150 transitions, 308 flow [2022-11-21 17:00:18,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:00:18,724 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;@536ddf6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:00:18,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-21 17:00:18,752 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-21 17:00:18,753 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:00:18,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:18,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:18,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 17:00:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:18,774 INFO L85 PathProgramCache]: Analyzing trace with hash -603325259, now seen corresponding path program 1 times [2022-11-21 17:00:18,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:18,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018996799] [2022-11-21 17:00:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:18,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:19,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:19,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018996799] [2022-11-21 17:00:19,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018996799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:19,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:19,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:00:19,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302167613] [2022-11-21 17:00:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:19,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:00:19,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:00:19,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:00:19,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 150 [2022-11-21 17:00:19,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 150 transitions, 308 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:19,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 150 [2022-11-21 17:00:19,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:19,292 INFO L130 PetriNetUnfolder]: 7/185 cut-off events. [2022-11-21 17:00:19,292 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-21 17:00:19,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 7/185 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 422 event pairs, 0 based on Foata normal form. 16/181 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2022-11-21 17:00:19,296 INFO L137 encePairwiseOnDemand]: 139/150 looper letters, 2 selfloop transitions, 0 changer transitions 0/138 dead transitions. [2022-11-21 17:00:19,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 138 transitions, 288 flow [2022-11-21 17:00:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:00:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 17:00:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 285 transitions. [2022-11-21 17:00:19,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.95 [2022-11-21 17:00:19,318 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 285 transitions. [2022-11-21 17:00:19,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 285 transitions. [2022-11-21 17:00:19,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:19,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 285 transitions. [2022-11-21 17:00:19,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 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) [2022-11-21 17:00:19,333 INFO L81 ComplementDD]: Finished complementDD. Result has 3 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) [2022-11-21 17:00:19,335 INFO L175 Difference]: Start difference. First operand has 138 places, 150 transitions, 308 flow. Second operand 2 states and 285 transitions. [2022-11-21 17:00:19,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 138 transitions, 288 flow [2022-11-21 17:00:19,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 138 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:00:19,343 INFO L231 Difference]: Finished difference. Result has 138 places, 138 transitions, 284 flow [2022-11-21 17:00:19,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=284, PETRI_PLACES=138, PETRI_TRANSITIONS=138} [2022-11-21 17:00:19,349 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2022-11-21 17:00:19,349 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 138 transitions, 284 flow [2022-11-21 17:00:19,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:19,350 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:19,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:00:19,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 17:00:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:19,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1884187574, now seen corresponding path program 1 times [2022-11-21 17:00:19,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:19,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599300589] [2022-11-21 17:00:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:19,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599300589] [2022-11-21 17:00:19,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599300589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:19,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:19,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:00:19,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862204011] [2022-11-21 17:00:19,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:19,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:00:19,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:19,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:00:19,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:00:19,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-11-21 17:00:19,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 138 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:19,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-11-21 17:00:19,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:19,607 INFO L130 PetriNetUnfolder]: 3/157 cut-off events. [2022-11-21 17:00:19,608 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-21 17:00:19,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 157 events. 3/157 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 172. Up to 7 conditions per place. [2022-11-21 17:00:19,610 INFO L137 encePairwiseOnDemand]: 147/150 looper letters, 9 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2022-11-21 17:00:19,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 140 transitions, 310 flow [2022-11-21 17:00:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:00:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:00:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-11-21 17:00:19,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8866666666666667 [2022-11-21 17:00:19,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-11-21 17:00:19,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-11-21 17:00:19,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:19,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-11-21 17:00:19,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,618 INFO L175 Difference]: Start difference. First operand has 138 places, 138 transitions, 284 flow. Second operand 3 states and 399 transitions. [2022-11-21 17:00:19,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 140 transitions, 310 flow [2022-11-21 17:00:19,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 140 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:00:19,623 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 292 flow [2022-11-21 17:00:19,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2022-11-21 17:00:19,625 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 3 predicate places. [2022-11-21 17:00:19,625 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 292 flow [2022-11-21 17:00:19,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:19,626 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:19,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:00:19,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 17:00:19,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1044951051, now seen corresponding path program 1 times [2022-11-21 17:00:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:19,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46680903] [2022-11-21 17:00:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:19,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:19,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:19,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46680903] [2022-11-21 17:00:19,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46680903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:19,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:19,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:00:19,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105271197] [2022-11-21 17:00:19,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:19,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:00:19,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:00:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:00:19,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 150 [2022-11-21 17:00:19,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:19,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 150 [2022-11-21 17:00:19,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:19,847 INFO L130 PetriNetUnfolder]: 42/573 cut-off events. [2022-11-21 17:00:19,847 INFO L131 PetriNetUnfolder]: For 13/18 co-relation queries the response was YES. [2022-11-21 17:00:19,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 573 events. 42/573 cut-off events. For 13/18 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2853 event pairs, 11 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 668. Up to 53 conditions per place. [2022-11-21 17:00:19,857 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 18 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2022-11-21 17:00:19,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 357 flow [2022-11-21 17:00:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:00:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:00:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2022-11-21 17:00:19,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-21 17:00:19,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2022-11-21 17:00:19,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2022-11-21 17:00:19,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:19,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2022-11-21 17:00:19,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,868 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 292 flow. Second operand 3 states and 390 transitions. [2022-11-21 17:00:19,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 145 transitions, 357 flow [2022-11-21 17:00:19,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 145 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:00:19,876 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 326 flow [2022-11-21 17:00:19,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2022-11-21 17:00:19,878 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 3 predicate places. [2022-11-21 17:00:19,878 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 326 flow [2022-11-21 17:00:19,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:19,880 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:19,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:00:19,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 17:00:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1432707695, now seen corresponding path program 1 times [2022-11-21 17:00:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:19,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259321570] [2022-11-21 17:00:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:19,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:00:19,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:00:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:00:20,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:00:20,032 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:00:20,034 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-21 17:00:20,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-21 17:00:20,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-21 17:00:20,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-21 17:00:20,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-21 17:00:20,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-21 17:00:20,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-21 17:00:20,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-21 17:00:20,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-21 17:00:20,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-21 17:00:20,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-21 17:00:20,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:00:20,038 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-21 17:00:20,042 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 17:00:20,042 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 17:00:20,084 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 17:00:20,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 196 transitions, 410 flow [2022-11-21 17:00:20,162 INFO L130 PetriNetUnfolder]: 40/333 cut-off events. [2022-11-21 17:00:20,162 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 17:00:20,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 333 events. 40/333 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1147 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 205. Up to 9 conditions per place. [2022-11-21 17:00:20,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 196 transitions, 410 flow [2022-11-21 17:00:20,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 196 transitions, 410 flow [2022-11-21 17:00:20,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:00:20,178 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;@536ddf6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:00:20,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-21 17:00:20,188 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-21 17:00:20,188 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:00:20,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:20,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:20,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 17:00:20,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash -644423371, now seen corresponding path program 1 times [2022-11-21 17:00:20,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:20,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309399950] [2022-11-21 17:00:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:20,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:20,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:20,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309399950] [2022-11-21 17:00:20,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309399950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:20,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:20,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:00:20,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744068977] [2022-11-21 17:00:20,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:20,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:00:20,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:00:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:00:20,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 196 [2022-11-21 17:00:20,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 196 transitions, 410 flow. Second operand has 2 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:20,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 196 [2022-11-21 17:00:20,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:20,334 INFO L130 PetriNetUnfolder]: 12/302 cut-off events. [2022-11-21 17:00:20,334 INFO L131 PetriNetUnfolder]: For 19/26 co-relation queries the response was YES. [2022-11-21 17:00:20,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 302 events. 12/302 cut-off events. For 19/26 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 924 event pairs, 0 based on Foata normal form. 42/309 useless extension candidates. Maximal degree in co-relation 189. Up to 7 conditions per place. [2022-11-21 17:00:20,338 INFO L137 encePairwiseOnDemand]: 179/196 looper letters, 4 selfloop transitions, 0 changer transitions 0/178 dead transitions. [2022-11-21 17:00:20,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 382 flow [2022-11-21 17:00:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:00:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 17:00:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 369 transitions. [2022-11-21 17:00:20,341 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9413265306122449 [2022-11-21 17:00:20,341 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 369 transitions. [2022-11-21 17:00:20,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 369 transitions. [2022-11-21 17:00:20,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:20,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 369 transitions. [2022-11-21 17:00:20,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 184.5) internal successors, (369), 2 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,344 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,344 INFO L175 Difference]: Start difference. First operand has 179 places, 196 transitions, 410 flow. Second operand 2 states and 369 transitions. [2022-11-21 17:00:20,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 382 flow [2022-11-21 17:00:20,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 178 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:00:20,351 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 374 flow [2022-11-21 17:00:20,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=374, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2022-11-21 17:00:20,353 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 0 predicate places. [2022-11-21 17:00:20,353 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 374 flow [2022-11-21 17:00:20,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:20,355 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:20,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:00:20,355 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 17:00:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1843089462, now seen corresponding path program 1 times [2022-11-21 17:00:20,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:20,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644053296] [2022-11-21 17:00:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:20,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:20,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:20,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644053296] [2022-11-21 17:00:20,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644053296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:20,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:20,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:00:20,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564457249] [2022-11-21 17:00:20,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:20,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:00:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:20,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:00:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:00:20,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 196 [2022-11-21 17:00:20,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:20,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 196 [2022-11-21 17:00:20,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:20,565 INFO L130 PetriNetUnfolder]: 8/274 cut-off events. [2022-11-21 17:00:20,565 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-21 17:00:20,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 274 events. 8/274 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 759 event pairs, 0 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 305. Up to 16 conditions per place. [2022-11-21 17:00:20,568 INFO L137 encePairwiseOnDemand]: 193/196 looper letters, 13 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-11-21 17:00:20,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 182 transitions, 412 flow [2022-11-21 17:00:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:00:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:00:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-11-21 17:00:20,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792517006802721 [2022-11-21 17:00:20,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-11-21 17:00:20,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-11-21 17:00:20,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:20,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-11-21 17:00:20,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 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) [2022-11-21 17:00:20,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,576 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 374 flow. Second operand 3 states and 517 transitions. [2022-11-21 17:00:20,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 182 transitions, 412 flow [2022-11-21 17:00:20,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 182 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:00:20,580 INFO L231 Difference]: Finished difference. Result has 182 places, 179 transitions, 386 flow [2022-11-21 17:00:20,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=182, PETRI_TRANSITIONS=179} [2022-11-21 17:00:20,583 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 3 predicate places. [2022-11-21 17:00:20,584 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 386 flow [2022-11-21 17:00:20,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:20,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:20,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:00:20,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 17:00:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1511097929, now seen corresponding path program 1 times [2022-11-21 17:00:20,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:20,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481730727] [2022-11-21 17:00:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:20,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:20,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:20,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481730727] [2022-11-21 17:00:20,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481730727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:20,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:20,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:00:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642850673] [2022-11-21 17:00:20,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:20,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:00:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:20,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:00:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:00:20,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 196 [2022-11-21 17:00:20,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 179 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:20,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 196 [2022-11-21 17:00:20,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:22,256 INFO L130 PetriNetUnfolder]: 1530/8073 cut-off events. [2022-11-21 17:00:22,257 INFO L131 PetriNetUnfolder]: For 394/581 co-relation queries the response was YES. [2022-11-21 17:00:22,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 8073 events. 1530/8073 cut-off events. For 394/581 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 88456 event pairs, 513 based on Foata normal form. 9/6867 useless extension candidates. Maximal degree in co-relation 10657. Up to 1422 conditions per place. [2022-11-21 17:00:22,331 INFO L137 encePairwiseOnDemand]: 177/196 looper letters, 42 selfloop transitions, 14 changer transitions 0/204 dead transitions. [2022-11-21 17:00:22,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 204 transitions, 559 flow [2022-11-21 17:00:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:00:22,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:00:22,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2022-11-21 17:00:22,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8537414965986394 [2022-11-21 17:00:22,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2022-11-21 17:00:22,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2022-11-21 17:00:22,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:22,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2022-11-21 17:00:22,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:22,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:22,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:22,340 INFO L175 Difference]: Start difference. First operand has 182 places, 179 transitions, 386 flow. Second operand 3 states and 502 transitions. [2022-11-21 17:00:22,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 204 transitions, 559 flow [2022-11-21 17:00:22,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 204 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:00:22,348 INFO L231 Difference]: Finished difference. Result has 185 places, 193 transitions, 506 flow [2022-11-21 17:00:22,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=185, PETRI_TRANSITIONS=193} [2022-11-21 17:00:22,350 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 6 predicate places. [2022-11-21 17:00:22,351 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 193 transitions, 506 flow [2022-11-21 17:00:22,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:22,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:22,352 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:22,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:00:22,352 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 17:00:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1271923888, now seen corresponding path program 1 times [2022-11-21 17:00:22,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:22,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218946496] [2022-11-21 17:00:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:22,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:22,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218946496] [2022-11-21 17:00:22,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218946496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:22,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:22,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:00:22,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514911059] [2022-11-21 17:00:22,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:22,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:00:22,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:22,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:00:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:00:22,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 196 [2022-11-21 17:00:22,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 193 transitions, 506 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) [2022-11-21 17:00:22,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:22,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 196 [2022-11-21 17:00:22,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:24,080 INFO L130 PetriNetUnfolder]: 1844/8642 cut-off events. [2022-11-21 17:00:24,080 INFO L131 PetriNetUnfolder]: For 2774/3065 co-relation queries the response was YES. [2022-11-21 17:00:24,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14479 conditions, 8642 events. 1844/8642 cut-off events. For 2774/3065 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 94110 event pairs, 805 based on Foata normal form. 19/7722 useless extension candidates. Maximal degree in co-relation 14471. Up to 2653 conditions per place. [2022-11-21 17:00:24,159 INFO L137 encePairwiseOnDemand]: 187/196 looper letters, 60 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2022-11-21 17:00:24,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 220 transitions, 770 flow [2022-11-21 17:00:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:00:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:00:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2022-11-21 17:00:24,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8299319727891157 [2022-11-21 17:00:24,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2022-11-21 17:00:24,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2022-11-21 17:00:24,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:24,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2022-11-21 17:00:24,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,166 INFO L175 Difference]: Start difference. First operand has 185 places, 193 transitions, 506 flow. Second operand 3 states and 488 transitions. [2022-11-21 17:00:24,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 220 transitions, 770 flow [2022-11-21 17:00:24,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 220 transitions, 726 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:00:24,176 INFO L231 Difference]: Finished difference. Result has 187 places, 205 transitions, 604 flow [2022-11-21 17:00:24,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=604, PETRI_PLACES=187, PETRI_TRANSITIONS=205} [2022-11-21 17:00:24,177 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 8 predicate places. [2022-11-21 17:00:24,177 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 205 transitions, 604 flow [2022-11-21 17:00:24,177 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) [2022-11-21 17:00:24,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:24,178 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:24,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:00:24,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 17:00:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1825049081, now seen corresponding path program 1 times [2022-11-21 17:00:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:24,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960020952] [2022-11-21 17:00:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:00:24,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:00:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:00:24,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:00:24,234 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:00:24,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-21 17:00:24,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-21 17:00:24,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-21 17:00:24,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-21 17:00:24,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-21 17:00:24,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-21 17:00:24,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-21 17:00:24,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-21 17:00:24,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-21 17:00:24,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-21 17:00:24,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-21 17:00:24,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-21 17:00:24,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-21 17:00:24,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-21 17:00:24,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-21 17:00:24,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:00:24,237 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-21 17:00:24,239 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 17:00:24,239 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 17:00:24,295 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:00:24,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 242 transitions, 514 flow [2022-11-21 17:00:24,372 INFO L130 PetriNetUnfolder]: 62/508 cut-off events. [2022-11-21 17:00:24,372 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-21 17:00:24,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 508 events. 62/508 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1934 event pairs, 1 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 341. Up to 16 conditions per place. [2022-11-21 17:00:24,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 242 transitions, 514 flow [2022-11-21 17:00:24,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 242 transitions, 514 flow [2022-11-21 17:00:24,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:00:24,385 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;@536ddf6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:00:24,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-21 17:00:24,391 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2022-11-21 17:00:24,391 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:00:24,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:24,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:24,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:00:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:24,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2097605259, now seen corresponding path program 1 times [2022-11-21 17:00:24,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:24,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105729422] [2022-11-21 17:00:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:24,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105729422] [2022-11-21 17:00:24,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105729422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:24,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:24,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:00:24,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575644375] [2022-11-21 17:00:24,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:24,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:00:24,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:24,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:00:24,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:00:24,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 242 [2022-11-21 17:00:24,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 242 transitions, 514 flow. Second operand has 2 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:24,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 242 [2022-11-21 17:00:24,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:24,566 INFO L130 PetriNetUnfolder]: 20/462 cut-off events. [2022-11-21 17:00:24,566 INFO L131 PetriNetUnfolder]: For 51/68 co-relation queries the response was YES. [2022-11-21 17:00:24,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 462 events. 20/462 cut-off events. For 51/68 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1723 event pairs, 1 based on Foata normal form. 104/512 useless extension candidates. Maximal degree in co-relation 316. Up to 16 conditions per place. [2022-11-21 17:00:24,571 INFO L137 encePairwiseOnDemand]: 219/242 looper letters, 6 selfloop transitions, 0 changer transitions 0/218 dead transitions. [2022-11-21 17:00:24,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 218 transitions, 478 flow [2022-11-21 17:00:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:00:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 17:00:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 453 transitions. [2022-11-21 17:00:24,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9359504132231405 [2022-11-21 17:00:24,573 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 453 transitions. [2022-11-21 17:00:24,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 453 transitions. [2022-11-21 17:00:24,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:24,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 453 transitions. [2022-11-21 17:00:24,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.5) internal successors, (453), 2 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,577 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,577 INFO L175 Difference]: Start difference. First operand has 220 places, 242 transitions, 514 flow. Second operand 2 states and 453 transitions. [2022-11-21 17:00:24,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 218 transitions, 478 flow [2022-11-21 17:00:24,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 218 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:00:24,582 INFO L231 Difference]: Finished difference. Result has 220 places, 218 transitions, 466 flow [2022-11-21 17:00:24,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=466, PETRI_PLACES=220, PETRI_TRANSITIONS=218} [2022-11-21 17:00:24,584 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 0 predicate places. [2022-11-21 17:00:24,584 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 218 transitions, 466 flow [2022-11-21 17:00:24,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:24,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:24,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:00:24,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:00:24,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash 389907574, now seen corresponding path program 1 times [2022-11-21 17:00:24,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:24,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399496607] [2022-11-21 17:00:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:24,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:24,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399496607] [2022-11-21 17:00:24,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399496607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:24,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:24,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:00:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126227900] [2022-11-21 17:00:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:24,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:00:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:24,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:00:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:00:24,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 242 [2022-11-21 17:00:24,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 218 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:24,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 242 [2022-11-21 17:00:24,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:24,726 INFO L130 PetriNetUnfolder]: 16/434 cut-off events. [2022-11-21 17:00:24,726 INFO L131 PetriNetUnfolder]: For 43/115 co-relation queries the response was YES. [2022-11-21 17:00:24,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 434 events. 16/434 cut-off events. For 43/115 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1581 event pairs, 1 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 492. Up to 30 conditions per place. [2022-11-21 17:00:24,732 INFO L137 encePairwiseOnDemand]: 239/242 looper letters, 15 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2022-11-21 17:00:24,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 222 transitions, 508 flow [2022-11-21 17:00:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:00:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:00:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2022-11-21 17:00:24,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871900826446281 [2022-11-21 17:00:24,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2022-11-21 17:00:24,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2022-11-21 17:00:24,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:24,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2022-11-21 17:00:24,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,739 INFO L175 Difference]: Start difference. First operand has 220 places, 218 transitions, 466 flow. Second operand 3 states and 633 transitions. [2022-11-21 17:00:24,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 222 transitions, 508 flow [2022-11-21 17:00:24,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 222 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:00:24,743 INFO L231 Difference]: Finished difference. Result has 223 places, 219 transitions, 478 flow [2022-11-21 17:00:24,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=223, PETRI_TRANSITIONS=219} [2022-11-21 17:00:24,744 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 3 predicate places. [2022-11-21 17:00:24,744 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 219 transitions, 478 flow [2022-11-21 17:00:24,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:24,745 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:00:24,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:00:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1433863517, now seen corresponding path program 1 times [2022-11-21 17:00:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:24,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185854357] [2022-11-21 17:00:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:24,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:24,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:24,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185854357] [2022-11-21 17:00:24,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185854357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:24,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:24,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:00:24,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125486623] [2022-11-21 17:00:24,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:24,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:00:24,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:24,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:00:24,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:00:24,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 242 [2022-11-21 17:00:24,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 219 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:24,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 242 [2022-11-21 17:00:24,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:42,803 INFO L130 PetriNetUnfolder]: 37205/124918 cut-off events. [2022-11-21 17:00:42,803 INFO L131 PetriNetUnfolder]: For 9143/12888 co-relation queries the response was YES. [2022-11-21 17:00:43,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180145 conditions, 124918 events. 37205/124918 cut-off events. For 9143/12888 co-relation queries the response was YES. Maximal size of possible extension queue 3377. Compared 1881170 event pairs, 14620 based on Foata normal form. 59/104275 useless extension candidates. Maximal degree in co-relation 180137. Up to 29758 conditions per place. [2022-11-21 17:00:44,483 INFO L137 encePairwiseOnDemand]: 215/242 looper letters, 62 selfloop transitions, 20 changer transitions 0/256 dead transitions. [2022-11-21 17:00:44,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 256 transitions, 737 flow [2022-11-21 17:00:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:00:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:00:44,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2022-11-21 17:00:44,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.837465564738292 [2022-11-21 17:00:44,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2022-11-21 17:00:44,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2022-11-21 17:00:44,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:44,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2022-11-21 17:00:44,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:44,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:44,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:44,492 INFO L175 Difference]: Start difference. First operand has 223 places, 219 transitions, 478 flow. Second operand 3 states and 608 transitions. [2022-11-21 17:00:44,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 256 transitions, 737 flow [2022-11-21 17:00:44,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 256 transitions, 735 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:00:44,518 INFO L231 Difference]: Finished difference. Result has 226 places, 239 transitions, 650 flow [2022-11-21 17:00:44,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=226, PETRI_TRANSITIONS=239} [2022-11-21 17:00:44,521 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 6 predicate places. [2022-11-21 17:00:44,521 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 239 transitions, 650 flow [2022-11-21 17:00:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:44,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:44,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:44,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:00:44,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:00:44,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1851622226, now seen corresponding path program 1 times [2022-11-21 17:00:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:44,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848171521] [2022-11-21 17:00:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:44,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:44,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:44,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848171521] [2022-11-21 17:00:44,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848171521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:44,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:44,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:00:44,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423052467] [2022-11-21 17:00:44,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:44,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:00:44,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:44,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:00:44,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:00:44,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 242 [2022-11-21 17:00:44,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 239 transitions, 650 flow. Second operand 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) [2022-11-21 17:00:44,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:44,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 242 [2022-11-21 17:00:44,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:01:05,215 INFO L130 PetriNetUnfolder]: 46616/146797 cut-off events. [2022-11-21 17:01:05,216 INFO L131 PetriNetUnfolder]: For 64629/75060 co-relation queries the response was YES. [2022-11-21 17:01:06,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275729 conditions, 146797 events. 46616/146797 cut-off events. For 64629/75060 co-relation queries the response was YES. Maximal size of possible extension queue 3894. Compared 2205712 event pairs, 21379 based on Foata normal form. 228/130100 useless extension candidates. Maximal degree in co-relation 275720. Up to 59402 conditions per place. [2022-11-21 17:01:06,877 INFO L137 encePairwiseOnDemand]: 229/242 looper letters, 92 selfloop transitions, 22 changer transitions 0/286 dead transitions. [2022-11-21 17:01:06,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 286 transitions, 1084 flow [2022-11-21 17:01:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:01:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:01:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2022-11-21 17:01:06,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-21 17:01:06,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2022-11-21 17:01:06,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2022-11-21 17:01:06,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:01:06,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2022-11-21 17:01:06,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:06,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:06,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:06,884 INFO L175 Difference]: Start difference. First operand has 226 places, 239 transitions, 650 flow. Second operand 3 states and 594 transitions. [2022-11-21 17:01:06,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 286 transitions, 1084 flow [2022-11-21 17:01:06,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 286 transitions, 1016 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:01:06,971 INFO L231 Difference]: Finished difference. Result has 228 places, 259 transitions, 816 flow [2022-11-21 17:01:06,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=816, PETRI_PLACES=228, PETRI_TRANSITIONS=259} [2022-11-21 17:01:06,972 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 8 predicate places. [2022-11-21 17:01:06,972 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 259 transitions, 816 flow [2022-11-21 17:01:06,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-21 17:01:06,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:01:06,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:01:06,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:01:06,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:01:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash 166141553, now seen corresponding path program 1 times [2022-11-21 17:01:06,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:01:06,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400456549] [2022-11-21 17:01:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:06,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:01:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:01:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:07,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:01:07,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400456549] [2022-11-21 17:01:07,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400456549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:01:07,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185799779] [2022-11-21 17:01:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:07,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:01:07,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:01:07,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:01:07,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbba19-09ad-4e61-b208-d9e0a4adb514/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:01:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:01:07,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:01:07,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:01:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:01:07,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:01:07,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185799779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:01:07,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:01:07,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-21 17:01:07,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265486760] [2022-11-21 17:01:07,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:01:07,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:01:07,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:01:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:01:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:01:07,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 242 [2022-11-21 17:01:07,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 259 transitions, 816 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:07,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:01:07,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 242 [2022-11-21 17:01:07,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand