./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/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_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:06:46,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:06:46,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:06:46,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:06:46,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:06:46,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:06:46,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:06:46,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:06:46,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:06:46,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:06:46,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:06:46,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:06:46,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:06:46,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:06:46,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:06:46,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:06:46,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:06:46,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:06:46,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:06:46,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:06:46,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:06:46,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:06:46,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:06:46,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:06:46,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:06:46,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:06:46,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:06:46,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:06:46,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:06:46,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:06:46,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:06:46,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:06:46,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:06:46,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:06:46,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:06:46,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:06:46,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:06:46,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:06:46,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:06:46,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:06:46,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:06:46,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:06:46,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:06:46,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:06:46,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:06:46,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:06:46,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:06:46,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:06:46,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:06:46,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:06:46,976 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:06:46,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:06:46,977 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:06:46,977 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:06:46,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:06:46,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:06:46,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:06:46,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:06:46,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:06:46,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:06:46,978 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:06:46,979 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:06:46,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:06:46,979 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:06:46,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:06:46,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:06:46,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:06:46,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:06:46,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:46,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:06:46,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:06:46,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:06:46,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:06:46,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:06:46,982 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:06:46,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:06:46,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:06:46,982 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_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2022-11-16 12:06:47,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:06:47,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:06:47,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:06:47,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:06:47,347 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:06:47,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-16 12:06:47,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/data/6754f491b/35da2c29e78d4ca699b4c233d9f77715/FLAG8db56e46b [2022-11-16 12:06:48,160 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:06:48,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-16 12:06:48,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/data/6754f491b/35da2c29e78d4ca699b4c233d9f77715/FLAG8db56e46b [2022-11-16 12:06:48,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/data/6754f491b/35da2c29e78d4ca699b4c233d9f77715 [2022-11-16 12:06:48,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:06:48,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:06:48,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:48,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:06:48,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:06:48,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:48" (1/1) ... [2022-11-16 12:06:48,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30422006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:48, skipping insertion in model container [2022-11-16 12:06:48,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:48" (1/1) ... [2022-11-16 12:06:48,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:06:48,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:06:49,193 WARN L229 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_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-16 12:06:49,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:49,266 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:06:49,341 WARN L229 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_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-16 12:06:49,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:49,468 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:06:49,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49 WrapperNode [2022-11-16 12:06:49,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:49,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:49,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:06:49,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:06:49,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,581 INFO L138 Inliner]: procedures = 270, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2022-11-16 12:06:49,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:49,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:06:49,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:06:49,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:06:49,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,653 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:06:49,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:06:49,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:06:49,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:06:49,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (1/1) ... [2022-11-16 12:06:49,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:49,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:49,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:06:49,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:06:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:06:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:06:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:06:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:06:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:06:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:06:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:06:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:06:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:06:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:06:49,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:06:49,790 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:06:50,085 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:06:50,088 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:06:50,340 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:06:50,349 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:06:50,349 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 12:06:50,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:50 BoogieIcfgContainer [2022-11-16 12:06:50,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:06:50,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:06:50,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:06:50,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:06:50,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:06:48" (1/3) ... [2022-11-16 12:06:50,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a756918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:50, skipping insertion in model container [2022-11-16 12:06:50,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:49" (2/3) ... [2022-11-16 12:06:50,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a756918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:50, skipping insertion in model container [2022-11-16 12:06:50,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:50" (3/3) ... [2022-11-16 12:06:50,361 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2022-11-16 12:06:50,370 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:06:50,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:06:50,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 12:06:50,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:06:50,450 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:06:50,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 153 transitions, 314 flow [2022-11-16 12:06:50,598 INFO L130 PetriNetUnfolder]: 23/206 cut-off events. [2022-11-16 12:06:50,599 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:06:50,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 206 events. 23/206 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 570 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-11-16 12:06:50,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 153 transitions, 314 flow [2022-11-16 12:06:50,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 153 transitions, 314 flow [2022-11-16 12:06:50,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:06:50,635 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;@7b21a3ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:06:50,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 12:06:50,657 INFO L130 PetriNetUnfolder]: 5/78 cut-off events. [2022-11-16 12:06:50,658 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:06:50,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:50,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:50,659 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)] === [2022-11-16 12:06:50,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash -567140311, now seen corresponding path program 1 times [2022-11-16 12:06:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:50,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122209532] [2022-11-16 12:06:50,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:50,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:50,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:50,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122209532] [2022-11-16 12:06:50,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122209532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:50,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:50,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237027346] [2022-11-16 12:06:50,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:50,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:06:50,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:51,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:06:51,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:06:51,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 153 [2022-11-16 12:06:51,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 153 transitions, 314 flow. Second operand has 2 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:51,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 153 [2022-11-16 12:06:51,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:51,132 INFO L130 PetriNetUnfolder]: 7/188 cut-off events. [2022-11-16 12:06:51,133 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 12:06:51,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 7/188 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 424 event pairs, 0 based on Foata normal form. 16/184 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2022-11-16 12:06:51,136 INFO L137 encePairwiseOnDemand]: 142/153 looper letters, 2 selfloop transitions, 0 changer transitions 0/141 dead transitions. [2022-11-16 12:06:51,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 294 flow [2022-11-16 12:06:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:06:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:06:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 291 transitions. [2022-11-16 12:06:51,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9509803921568627 [2022-11-16 12:06:51,154 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 291 transitions. [2022-11-16 12:06:51,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 291 transitions. [2022-11-16 12:06:51,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:51,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 291 transitions. [2022-11-16 12:06:51,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,173 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,175 INFO L175 Difference]: Start difference. First operand has 141 places, 153 transitions, 314 flow. Second operand 2 states and 291 transitions. [2022-11-16 12:06:51,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 141 transitions, 294 flow [2022-11-16 12:06:51,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 141 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:06:51,199 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 290 flow [2022-11-16 12:06:51,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=290, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2022-11-16 12:06:51,207 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 0 predicate places. [2022-11-16 12:06:51,208 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 290 flow [2022-11-16 12:06:51,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,210 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:51,210 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:51,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:06:51,211 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)] === [2022-11-16 12:06:51,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:51,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1920372522, now seen corresponding path program 1 times [2022-11-16 12:06:51,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:51,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728925904] [2022-11-16 12:06:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:51,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:51,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:51,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728925904] [2022-11-16 12:06:51,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728925904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:51,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:51,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:06:51,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514085305] [2022-11-16 12:06:51,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:51,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:51,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:51,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 153 [2022-11-16 12:06:51,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 290 flow. Second operand has 3 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) [2022-11-16 12:06:51,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:51,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 153 [2022-11-16 12:06:51,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:51,534 INFO L130 PetriNetUnfolder]: 3/160 cut-off events. [2022-11-16 12:06:51,534 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-16 12:06:51,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 160 events. 3/160 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 213 event pairs, 0 based on Foata normal form. 1/147 useless extension candidates. Maximal degree in co-relation 175. Up to 7 conditions per place. [2022-11-16 12:06:51,536 INFO L137 encePairwiseOnDemand]: 150/153 looper letters, 9 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2022-11-16 12:06:51,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 316 flow [2022-11-16 12:06:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:06:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2022-11-16 12:06:51,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-16 12:06:51,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2022-11-16 12:06:51,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2022-11-16 12:06:51,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:51,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2022-11-16 12:06:51,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,551 INFO L175 Difference]: Start difference. First operand has 141 places, 141 transitions, 290 flow. Second operand 3 states and 408 transitions. [2022-11-16 12:06:51,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 316 flow [2022-11-16 12:06:51,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 143 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:06:51,556 INFO L231 Difference]: Finished difference. Result has 144 places, 141 transitions, 298 flow [2022-11-16 12:06:51,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=144, PETRI_TRANSITIONS=141} [2022-11-16 12:06:51,574 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 3 predicate places. [2022-11-16 12:06:51,575 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 141 transitions, 298 flow [2022-11-16 12:06:51,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-16 12:06:51,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:51,577 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] [2022-11-16 12:06:51,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:06:51,579 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)] === [2022-11-16 12:06:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1237348829, now seen corresponding path program 1 times [2022-11-16 12:06:51,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:51,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995020954] [2022-11-16 12:06:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:51,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995020954] [2022-11-16 12:06:51,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995020954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:51,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:51,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179941657] [2022-11-16 12:06:51,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:51,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:51,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 153 [2022-11-16 12:06:51,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 141 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:51,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 153 [2022-11-16 12:06:51,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:51,906 INFO L130 PetriNetUnfolder]: 42/576 cut-off events. [2022-11-16 12:06:51,907 INFO L131 PetriNetUnfolder]: For 17/22 co-relation queries the response was YES. [2022-11-16 12:06:51,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 576 events. 42/576 cut-off events. For 17/22 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2860 event pairs, 11 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 671. Up to 53 conditions per place. [2022-11-16 12:06:51,915 INFO L137 encePairwiseOnDemand]: 144/153 looper letters, 18 selfloop transitions, 6 changer transitions 0/148 dead transitions. [2022-11-16 12:06:51,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 148 transitions, 363 flow [2022-11-16 12:06:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:06:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-11-16 12:06:51,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.869281045751634 [2022-11-16 12:06:51,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-11-16 12:06:51,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-11-16 12:06:51,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:51,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-11-16 12:06:51,924 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) [2022-11-16 12:06:51,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,929 INFO L175 Difference]: Start difference. First operand has 144 places, 141 transitions, 298 flow. Second operand 3 states and 399 transitions. [2022-11-16 12:06:51,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 148 transitions, 363 flow [2022-11-16 12:06:51,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 148 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:06:51,937 INFO L231 Difference]: Finished difference. Result has 144 places, 143 transitions, 332 flow [2022-11-16 12:06:51,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=144, PETRI_TRANSITIONS=143} [2022-11-16 12:06:51,941 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 3 predicate places. [2022-11-16 12:06:51,941 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 143 transitions, 332 flow [2022-11-16 12:06:51,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:51,946 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, 1, 1, 1] [2022-11-16 12:06:51,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:06:51,947 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)] === [2022-11-16 12:06:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1942582304, now seen corresponding path program 1 times [2022-11-16 12:06:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:51,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979207735] [2022-11-16 12:06:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:51,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:06:52,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:06:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:06:52,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:06:52,111 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:06:52,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 12:06:52,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-16 12:06:52,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-16 12:06:52,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-16 12:06:52,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-16 12:06:52,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-16 12:06:52,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-16 12:06:52,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-16 12:06:52,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-16 12:06:52,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-16 12:06:52,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-16 12:06:52,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:06:52,119 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 12:06:52,125 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:06:52,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:06:52,187 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:06:52,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 199 transitions, 416 flow [2022-11-16 12:06:52,271 INFO L130 PetriNetUnfolder]: 40/336 cut-off events. [2022-11-16 12:06:52,271 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:06:52,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 336 events. 40/336 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1148 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 208. Up to 9 conditions per place. [2022-11-16 12:06:52,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 199 transitions, 416 flow [2022-11-16 12:06:52,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 199 transitions, 416 flow [2022-11-16 12:06:52,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:06:52,285 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;@7b21a3ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:06:52,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-16 12:06:52,297 INFO L130 PetriNetUnfolder]: 5/78 cut-off events. [2022-11-16 12:06:52,298 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:06:52,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:52,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:52,300 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)] === [2022-11-16 12:06:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1670313424, now seen corresponding path program 1 times [2022-11-16 12:06:52,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:52,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470344301] [2022-11-16 12:06:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:52,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:52,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470344301] [2022-11-16 12:06:52,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470344301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:52,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:52,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:52,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968913518] [2022-11-16 12:06:52,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:52,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:06:52,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:52,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:06:52,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:06:52,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-16 12:06:52,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 199 transitions, 416 flow. Second operand has 2 states, 2 states have (on average 177.5) internal successors, (355), 2 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:52,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-16 12:06:52,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:52,472 INFO L130 PetriNetUnfolder]: 12/305 cut-off events. [2022-11-16 12:06:52,473 INFO L131 PetriNetUnfolder]: For 21/29 co-relation queries the response was YES. [2022-11-16 12:06:52,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 305 events. 12/305 cut-off events. For 21/29 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 926 event pairs, 0 based on Foata normal form. 42/312 useless extension candidates. Maximal degree in co-relation 192. Up to 7 conditions per place. [2022-11-16 12:06:52,476 INFO L137 encePairwiseOnDemand]: 182/199 looper letters, 4 selfloop transitions, 0 changer transitions 0/181 dead transitions. [2022-11-16 12:06:52,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 181 transitions, 388 flow [2022-11-16 12:06:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:06:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:06:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 375 transitions. [2022-11-16 12:06:52,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9422110552763819 [2022-11-16 12:06:52,478 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 375 transitions. [2022-11-16 12:06:52,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 375 transitions. [2022-11-16 12:06:52,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:52,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 375 transitions. [2022-11-16 12:06:52,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,482 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,483 INFO L175 Difference]: Start difference. First operand has 182 places, 199 transitions, 416 flow. Second operand 2 states and 375 transitions. [2022-11-16 12:06:52,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 181 transitions, 388 flow [2022-11-16 12:06:52,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 181 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:06:52,490 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 380 flow [2022-11-16 12:06:52,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=380, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2022-11-16 12:06:52,493 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 0 predicate places. [2022-11-16 12:06:52,493 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 380 flow [2022-11-16 12:06:52,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 177.5) internal successors, (355), 2 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:52,494 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:52,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:06:52,495 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)] === [2022-11-16 12:06:52,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:52,496 INFO L85 PathProgramCache]: Analyzing trace with hash 817199409, now seen corresponding path program 1 times [2022-11-16 12:06:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:52,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272887941] [2022-11-16 12:06:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:52,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:52,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:52,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272887941] [2022-11-16 12:06:52,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272887941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:52,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:52,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:06:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958594941] [2022-11-16 12:06:52,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:52,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:52,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:52,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:52,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:52,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 199 [2022-11-16 12:06:52,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:52,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 199 [2022-11-16 12:06:52,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:52,714 INFO L130 PetriNetUnfolder]: 8/277 cut-off events. [2022-11-16 12:06:52,715 INFO L131 PetriNetUnfolder]: For 31/89 co-relation queries the response was YES. [2022-11-16 12:06:52,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 277 events. 8/277 cut-off events. For 31/89 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 758 event pairs, 0 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 308. Up to 16 conditions per place. [2022-11-16 12:06:52,718 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 13 selfloop transitions, 2 changer transitions 0/185 dead transitions. [2022-11-16 12:06:52,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 185 transitions, 418 flow [2022-11-16 12:06:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:06:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-11-16 12:06:52,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88107202680067 [2022-11-16 12:06:52,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-11-16 12:06:52,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-11-16 12:06:52,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:52,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-11-16 12:06:52,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,729 INFO L175 Difference]: Start difference. First operand has 182 places, 181 transitions, 380 flow. Second operand 3 states and 526 transitions. [2022-11-16 12:06:52,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 185 transitions, 418 flow [2022-11-16 12:06:52,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 185 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:06:52,734 INFO L231 Difference]: Finished difference. Result has 185 places, 182 transitions, 392 flow [2022-11-16 12:06:52,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=185, PETRI_TRANSITIONS=182} [2022-11-16 12:06:52,738 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 3 predicate places. [2022-11-16 12:06:52,738 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 182 transitions, 392 flow [2022-11-16 12:06:52,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:52,739 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] [2022-11-16 12:06:52,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:06:52,740 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)] === [2022-11-16 12:06:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash 385715792, now seen corresponding path program 1 times [2022-11-16 12:06:52,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:52,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750411681] [2022-11-16 12:06:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:52,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:52,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:52,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750411681] [2022-11-16 12:06:52,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750411681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:52,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:52,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:52,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871906729] [2022-11-16 12:06:52,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:52,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:52,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:52,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:52,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:52,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 199 [2022-11-16 12:06:52,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 182 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 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) [2022-11-16 12:06:52,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:52,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 199 [2022-11-16 12:06:52,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:54,571 INFO L130 PetriNetUnfolder]: 1530/8076 cut-off events. [2022-11-16 12:06:54,571 INFO L131 PetriNetUnfolder]: For 380/567 co-relation queries the response was YES. [2022-11-16 12:06:54,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10667 conditions, 8076 events. 1530/8076 cut-off events. For 380/567 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 88457 event pairs, 513 based on Foata normal form. 9/6870 useless extension candidates. Maximal degree in co-relation 10660. Up to 1422 conditions per place. [2022-11-16 12:06:54,642 INFO L137 encePairwiseOnDemand]: 180/199 looper letters, 42 selfloop transitions, 14 changer transitions 0/207 dead transitions. [2022-11-16 12:06:54,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 207 transitions, 565 flow [2022-11-16 12:06:54,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:06:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2022-11-16 12:06:54,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8559463986599665 [2022-11-16 12:06:54,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2022-11-16 12:06:54,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2022-11-16 12:06:54,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:54,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2022-11-16 12:06:54,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:54,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:54,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:54,657 INFO L175 Difference]: Start difference. First operand has 185 places, 182 transitions, 392 flow. Second operand 3 states and 511 transitions. [2022-11-16 12:06:54,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 207 transitions, 565 flow [2022-11-16 12:06:54,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 207 transitions, 563 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:06:54,667 INFO L231 Difference]: Finished difference. Result has 188 places, 196 transitions, 512 flow [2022-11-16 12:06:54,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=188, PETRI_TRANSITIONS=196} [2022-11-16 12:06:54,669 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 6 predicate places. [2022-11-16 12:06:54,669 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 196 transitions, 512 flow [2022-11-16 12:06:54,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 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) [2022-11-16 12:06:54,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:54,670 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] [2022-11-16 12:06:54,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:06:54,670 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)] === [2022-11-16 12:06:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1157239776, now seen corresponding path program 1 times [2022-11-16 12:06:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:54,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202979807] [2022-11-16 12:06:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:54,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:54,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:54,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202979807] [2022-11-16 12:06:54,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202979807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:54,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:54,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:54,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050369517] [2022-11-16 12:06:54,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:54,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:54,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:54,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 199 [2022-11-16 12:06:54,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 196 transitions, 512 flow. Second operand 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) [2022-11-16 12:06:54,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:54,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 199 [2022-11-16 12:06:54,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:56,336 INFO L130 PetriNetUnfolder]: 1844/8645 cut-off events. [2022-11-16 12:06:56,336 INFO L131 PetriNetUnfolder]: For 2783/3083 co-relation queries the response was YES. [2022-11-16 12:06:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14482 conditions, 8645 events. 1844/8645 cut-off events. For 2783/3083 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 94056 event pairs, 805 based on Foata normal form. 19/7725 useless extension candidates. Maximal degree in co-relation 14474. Up to 2653 conditions per place. [2022-11-16 12:06:56,437 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 60 selfloop transitions, 14 changer transitions 0/223 dead transitions. [2022-11-16 12:06:56,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 223 transitions, 776 flow [2022-11-16 12:06:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:06:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2022-11-16 12:06:56,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8324958123953099 [2022-11-16 12:06:56,440 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2022-11-16 12:06:56,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2022-11-16 12:06:56,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:56,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2022-11-16 12:06:56,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:56,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:56,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:56,445 INFO L175 Difference]: Start difference. First operand has 188 places, 196 transitions, 512 flow. Second operand 3 states and 497 transitions. [2022-11-16 12:06:56,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 223 transitions, 776 flow [2022-11-16 12:06:56,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 223 transitions, 732 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:06:56,460 INFO L231 Difference]: Finished difference. Result has 190 places, 208 transitions, 610 flow [2022-11-16 12:06:56,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=190, PETRI_TRANSITIONS=208} [2022-11-16 12:06:56,462 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 8 predicate places. [2022-11-16 12:06:56,462 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 208 transitions, 610 flow [2022-11-16 12:06:56,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-16 12:06:56,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:56,463 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, 1, 1, 1] [2022-11-16 12:06:56,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:06:56,464 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)] === [2022-11-16 12:06:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash 629834778, now seen corresponding path program 1 times [2022-11-16 12:06:56,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:56,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948773195] [2022-11-16 12:06:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:56,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:06:56,500 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:06:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:06:56,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:06:56,547 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:06:56,547 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-16 12:06:56,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-16 12:06:56,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-16 12:06:56,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-16 12:06:56,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-16 12:06:56,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-16 12:06:56,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-16 12:06:56,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-16 12:06:56,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-16 12:06:56,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-16 12:06:56,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-16 12:06:56,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-16 12:06:56,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-16 12:06:56,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-16 12:06:56,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-16 12:06:56,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:06:56,551 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:06:56,553 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:06:56,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:06:56,617 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:06:56,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 245 transitions, 520 flow [2022-11-16 12:06:56,764 INFO L130 PetriNetUnfolder]: 62/511 cut-off events. [2022-11-16 12:06:56,764 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 12:06:56,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 511 events. 62/511 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1927 event pairs, 1 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 344. Up to 16 conditions per place. [2022-11-16 12:06:56,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 245 transitions, 520 flow [2022-11-16 12:06:56,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 245 transitions, 520 flow [2022-11-16 12:06:56,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:06:56,781 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;@7b21a3ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:06:56,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-16 12:06:56,787 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-16 12:06:56,787 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:06:56,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:56,788 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:56,788 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)] === [2022-11-16 12:06:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash -956547355, now seen corresponding path program 1 times [2022-11-16 12:06:56,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:56,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662414726] [2022-11-16 12:06:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:56,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:56,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:56,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662414726] [2022-11-16 12:06:56,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662414726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:56,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:56,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:56,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780455097] [2022-11-16 12:06:56,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:56,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:06:56,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:06:56,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:06:56,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 245 [2022-11-16 12:06:56,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 245 transitions, 520 flow. Second operand has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:56,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:56,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 245 [2022-11-16 12:06:56,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:56,922 INFO L130 PetriNetUnfolder]: 20/465 cut-off events. [2022-11-16 12:06:56,922 INFO L131 PetriNetUnfolder]: For 54/76 co-relation queries the response was YES. [2022-11-16 12:06:56,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 465 events. 20/465 cut-off events. For 54/76 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1730 event pairs, 1 based on Foata normal form. 104/515 useless extension candidates. Maximal degree in co-relation 319. Up to 16 conditions per place. [2022-11-16 12:06:56,928 INFO L137 encePairwiseOnDemand]: 222/245 looper letters, 6 selfloop transitions, 0 changer transitions 0/221 dead transitions. [2022-11-16 12:06:56,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 221 transitions, 484 flow [2022-11-16 12:06:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:06:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:06:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 459 transitions. [2022-11-16 12:06:56,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.936734693877551 [2022-11-16 12:06:56,930 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 459 transitions. [2022-11-16 12:06:56,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 459 transitions. [2022-11-16 12:06:56,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:56,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 459 transitions. [2022-11-16 12:06:56,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:56,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:56,933 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:56,934 INFO L175 Difference]: Start difference. First operand has 223 places, 245 transitions, 520 flow. Second operand 2 states and 459 transitions. [2022-11-16 12:06:56,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 221 transitions, 484 flow [2022-11-16 12:06:56,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 221 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:06:56,938 INFO L231 Difference]: Finished difference. Result has 223 places, 221 transitions, 472 flow [2022-11-16 12:06:56,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=472, PETRI_PLACES=223, PETRI_TRANSITIONS=221} [2022-11-16 12:06:56,940 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 0 predicate places. [2022-11-16 12:06:56,941 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 221 transitions, 472 flow [2022-11-16 12:06:56,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:56,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:56,941 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:56,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:06:56,942 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)] === [2022-11-16 12:06:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1530965478, now seen corresponding path program 1 times [2022-11-16 12:06:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:56,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327459599] [2022-11-16 12:06:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:56,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:57,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:57,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327459599] [2022-11-16 12:06:57,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327459599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:57,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:57,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:06:57,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955120509] [2022-11-16 12:06:57,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:57,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:57,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:57,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:57,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:57,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 245 [2022-11-16 12:06:57,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 221 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:57,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:57,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 245 [2022-11-16 12:06:57,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:57,164 INFO L130 PetriNetUnfolder]: 16/437 cut-off events. [2022-11-16 12:06:57,164 INFO L131 PetriNetUnfolder]: For 71/213 co-relation queries the response was YES. [2022-11-16 12:06:57,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 437 events. 16/437 cut-off events. For 71/213 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1584 event pairs, 1 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 495. Up to 30 conditions per place. [2022-11-16 12:06:57,170 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 15 selfloop transitions, 2 changer transitions 0/225 dead transitions. [2022-11-16 12:06:57,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 225 transitions, 514 flow [2022-11-16 12:06:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:06:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2022-11-16 12:06:57,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8734693877551021 [2022-11-16 12:06:57,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2022-11-16 12:06:57,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2022-11-16 12:06:57,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:57,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2022-11-16 12:06:57,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:57,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:57,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:57,177 INFO L175 Difference]: Start difference. First operand has 223 places, 221 transitions, 472 flow. Second operand 3 states and 642 transitions. [2022-11-16 12:06:57,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 225 transitions, 514 flow [2022-11-16 12:06:57,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 225 transitions, 514 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:06:57,182 INFO L231 Difference]: Finished difference. Result has 226 places, 222 transitions, 484 flow [2022-11-16 12:06:57,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=226, PETRI_TRANSITIONS=222} [2022-11-16 12:06:57,184 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 3 predicate places. [2022-11-16 12:06:57,184 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 222 transitions, 484 flow [2022-11-16 12:06:57,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:57,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:57,185 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] [2022-11-16 12:06:57,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:06:57,185 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)] === [2022-11-16 12:06:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:57,186 INFO L85 PathProgramCache]: Analyzing trace with hash -424462863, now seen corresponding path program 1 times [2022-11-16 12:06:57,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:57,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893849231] [2022-11-16 12:06:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:57,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:57,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:57,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:57,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893849231] [2022-11-16 12:06:57,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893849231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:57,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:57,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:57,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122616990] [2022-11-16 12:06:57,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:57,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:57,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:57,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:57,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:57,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 245 [2022-11-16 12:06:57,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 222 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:57,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:57,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 245 [2022-11-16 12:06:57,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:13,310 INFO L130 PetriNetUnfolder]: 36851/115421 cut-off events. [2022-11-16 12:07:13,310 INFO L131 PetriNetUnfolder]: For 8229/9395 co-relation queries the response was YES. [2022-11-16 12:07:14,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170450 conditions, 115421 events. 36851/115421 cut-off events. For 8229/9395 co-relation queries the response was YES. Maximal size of possible extension queue 3225. Compared 1671507 event pairs, 13718 based on Foata normal form. 2/96308 useless extension candidates. Maximal degree in co-relation 170442. Up to 29734 conditions per place. [2022-11-16 12:07:14,726 INFO L137 encePairwiseOnDemand]: 218/245 looper letters, 62 selfloop transitions, 20 changer transitions 0/259 dead transitions. [2022-11-16 12:07:14,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 259 transitions, 743 flow [2022-11-16 12:07:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2022-11-16 12:07:14,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8394557823129252 [2022-11-16 12:07:14,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2022-11-16 12:07:14,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2022-11-16 12:07:14,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:14,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2022-11-16 12:07:14,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:14,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:14,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:14,735 INFO L175 Difference]: Start difference. First operand has 226 places, 222 transitions, 484 flow. Second operand 3 states and 617 transitions. [2022-11-16 12:07:14,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 259 transitions, 743 flow [2022-11-16 12:07:14,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 259 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:14,751 INFO L231 Difference]: Finished difference. Result has 229 places, 242 transitions, 656 flow [2022-11-16 12:07:14,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=656, PETRI_PLACES=229, PETRI_TRANSITIONS=242} [2022-11-16 12:07:14,752 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 6 predicate places. [2022-11-16 12:07:14,752 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 242 transitions, 656 flow [2022-11-16 12:07:14,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:14,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:14,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:14,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:07:14,754 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)] === [2022-11-16 12:07:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1821515988, now seen corresponding path program 1 times [2022-11-16 12:07:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:14,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135589113] [2022-11-16 12:07:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:14,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:14,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135589113] [2022-11-16 12:07:14,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135589113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:14,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:14,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:14,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823920027] [2022-11-16 12:07:14,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:14,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:14,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:14,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:14,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:14,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 245 [2022-11-16 12:07:14,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 242 transitions, 656 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:14,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:14,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 245 [2022-11-16 12:07:14,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:36,105 INFO L130 PetriNetUnfolder]: 46616/146770 cut-off events. [2022-11-16 12:07:36,106 INFO L131 PetriNetUnfolder]: For 64550/75036 co-relation queries the response was YES. [2022-11-16 12:07:37,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275702 conditions, 146770 events. 46616/146770 cut-off events. For 64550/75036 co-relation queries the response was YES. Maximal size of possible extension queue 3877. Compared 2204248 event pairs, 21433 based on Foata normal form. 231/130071 useless extension candidates. Maximal degree in co-relation 275693. Up to 59402 conditions per place. [2022-11-16 12:07:38,050 INFO L137 encePairwiseOnDemand]: 232/245 looper letters, 92 selfloop transitions, 22 changer transitions 0/289 dead transitions. [2022-11-16 12:07:38,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 289 transitions, 1090 flow [2022-11-16 12:07:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2022-11-16 12:07:38,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8204081632653061 [2022-11-16 12:07:38,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2022-11-16 12:07:38,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2022-11-16 12:07:38,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:38,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2022-11-16 12:07:38,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,061 INFO L175 Difference]: Start difference. First operand has 229 places, 242 transitions, 656 flow. Second operand 3 states and 603 transitions. [2022-11-16 12:07:38,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 289 transitions, 1090 flow [2022-11-16 12:07:38,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 289 transitions, 1022 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:38,415 INFO L231 Difference]: Finished difference. Result has 231 places, 262 transitions, 822 flow [2022-11-16 12:07:38,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=822, PETRI_PLACES=231, PETRI_TRANSITIONS=262} [2022-11-16 12:07:38,416 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 8 predicate places. [2022-11-16 12:07:38,416 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 262 transitions, 822 flow [2022-11-16 12:07:38,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:38,417 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, 1, 1, 1] [2022-11-16 12:07:38,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:07:38,417 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)] === [2022-11-16 12:07:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1735267490, now seen corresponding path program 1 times [2022-11-16 12:07:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:38,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602057244] [2022-11-16 12:07:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:38,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:38,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:38,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602057244] [2022-11-16 12:07:38,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602057244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:38,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565856348] [2022-11-16 12:07:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:38,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:38,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:38,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846cf0e8-e3eb-489f-9c70-b85be7f5d3e8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:07:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:38,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:07:38,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:07:38,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:38,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565856348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:38,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:07:38,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:07:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264729770] [2022-11-16 12:07:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:38,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:38,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:38,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:38,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:38,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 245 [2022-11-16 12:07:38,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 262 transitions, 822 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:38,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 245 [2022-11-16 12:07:38,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand