./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/qrcu-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/config/svcomp-DataRace-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-04 12:07:47,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-04 12:07:47,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-04 12:07:47,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-04 12:07:47,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-04 12:07:47,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-04 12:07:47,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-04 12:07:47,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-04 12:07:47,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-04 12:07:48,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-04 12:07:48,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-04 12:07:48,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-04 12:07:48,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-04 12:07:48,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-04 12:07:48,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-04 12:07:48,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-04 12:07:48,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-04 12:07:48,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-04 12:07:48,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-04 12:07:48,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-04 12:07:48,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-04 12:07:48,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-04 12:07:48,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-04 12:07:48,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-04 12:07:48,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-04 12:07:48,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-04 12:07:48,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-04 12:07:48,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-04 12:07:48,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-04 12:07:48,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-04 12:07:48,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-04 12:07:48,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-04 12:07:48,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-04 12:07:48,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-04 12:07:48,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-04 12:07:48,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-04 12:07:48,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-04 12:07:48,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-04 12:07:48,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-04 12:07:48,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-04 12:07:48,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-04 12:07:48,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/config/svcomp-DataRace-32bit-GemCutter_Default.epf [2022-11-04 12:07:48,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-04 12:07:48,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-04 12:07:48,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-04 12:07:48,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-04 12:07:48,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-04 12:07:48,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-04 12:07:48,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-04 12:07:48,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-04 12:07:48,058 INFO L138 SettingsManager]: * Use SBE=true [2022-11-04 12:07:48,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-04 12:07:48,059 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-04 12:07:48,059 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-04 12:07:48,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-04 12:07:48,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-04 12:07:48,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-04 12:07:48,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-04 12:07:48,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-04 12:07:48,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-04 12:07:48,061 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-04 12:07:48,061 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-04 12:07:48,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-04 12:07:48,061 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-04 12:07:48,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-04 12:07:48,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-04 12:07:48,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-04 12:07:48,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-11-04 12:07:48,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-04 12:07:48,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-04 12:07:48,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-04 12:07:48,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-04 12:07:48,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-04 12:07:48,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-04 12:07:48,064 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2022-11-04 12:07:48,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-04 12:07:48,064 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-04 12:07:48,064 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-11-04 12:07:48,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-04 12:07:48,065 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-11-04 12:07:48,065 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-11-04 12:07:48,065 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_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2022-11-04 12:07:48,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-04 12:07:48,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-04 12:07:48,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-04 12:07:48,448 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-04 12:07:48,449 INFO L275 PluginConnector]: CDTParser initialized [2022-11-04 12:07:48,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/../../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-11-04 12:07:48,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/data/a43007884/38e0fc7969c84299a0e2d5671e6c77b9/FLAGd1c870ee1 [2022-11-04 12:07:49,133 INFO L306 CDTParser]: Found 1 translation units. [2022-11-04 12:07:49,134 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-11-04 12:07:49,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/data/a43007884/38e0fc7969c84299a0e2d5671e6c77b9/FLAGd1c870ee1 [2022-11-04 12:07:49,418 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/data/a43007884/38e0fc7969c84299a0e2d5671e6c77b9 [2022-11-04 12:07:49,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-04 12:07:49,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-04 12:07:49,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-04 12:07:49,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-04 12:07:49,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-04 12:07:49,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 12:07:49" (1/1) ... [2022-11-04 12:07:49,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b7ead0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:49, skipping insertion in model container [2022-11-04 12:07:49,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 12:07:49" (1/1) ... [2022-11-04 12:07:49,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-04 12:07:49,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-04 12:07:49,940 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-11-04 12:07:49,944 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-11-04 12:07:49,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-04 12:07:49,993 INFO L203 MainTranslator]: Completed pre-run [2022-11-04 12:07:50,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-11-04 12:07:50,056 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-11-04 12:07:50,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-04 12:07:50,130 INFO L208 MainTranslator]: Completed translation [2022-11-04 12:07:50,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50 WrapperNode [2022-11-04 12:07:50,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-04 12:07:50,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-04 12:07:50,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-04 12:07:50,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-04 12:07:50,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,232 INFO L138 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 473 [2022-11-04 12:07:50,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-04 12:07:50,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-04 12:07:50,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-04 12:07:50,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-04 12:07:50,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,269 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-04 12:07:50,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-04 12:07:50,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-04 12:07:50,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-04 12:07:50,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (1/1) ... [2022-11-04 12:07:50,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-04 12:07:50,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:50,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:50,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-04 12:07:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-11-04 12:07:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-11-04 12:07:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-11-04 12:07:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-11-04 12:07:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-04 12:07:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-04 12:07:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-11-04 12:07:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-11-04 12:07:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-04 12:07:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-04 12:07:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-04 12:07:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-04 12:07:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-04 12:07:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-04 12:07:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-04 12:07:50,394 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-04 12:07:50,572 INFO L235 CfgBuilder]: Building ICFG [2022-11-04 12:07:50,580 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-04 12:07:51,410 INFO L276 CfgBuilder]: Performing block encoding [2022-11-04 12:07:51,846 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-04 12:07:51,846 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-04 12:07:51,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 12:07:51 BoogieIcfgContainer [2022-11-04 12:07:51,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-04 12:07:51,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-04 12:07:51,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-04 12:07:51,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-04 12:07:51,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 12:07:49" (1/3) ... [2022-11-04 12:07:51,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc4f4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 12:07:51, skipping insertion in model container [2022-11-04 12:07:51,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:07:50" (2/3) ... [2022-11-04 12:07:51,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc4f4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 12:07:51, skipping insertion in model container [2022-11-04 12:07:51,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 12:07:51" (3/3) ... [2022-11-04 12:07:51,864 INFO L112 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2022-11-04 12:07:51,875 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-04 12:07:51,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-04 12:07:51,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2022-11-04 12:07:51,887 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-04 12:07:52,074 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-04 12:07:52,136 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:52,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:52,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:52,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:52,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-11-04 12:07:52,188 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:52,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == qrcu_reader2Thread1of1ForFork2 ======== [2022-11-04 12:07:52,208 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=PARTIAL_ORDER_FA, 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;@213b91af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:52,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-04 12:07:56,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE === [qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-04 12:07:56,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:56,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1624406788, now seen corresponding path program 1 times [2022-11-04 12:07:56,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:56,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780480749] [2022-11-04 12:07:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:56,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:56,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:56,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780480749] [2022-11-04 12:07:56,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780480749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:56,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:56,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-04 12:07:56,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637129114] [2022-11-04 12:07:56,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:56,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-04 12:07:56,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-04 12:07:57,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-04 12:07:57,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:57,002 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:57,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2022-11-04 12:07:57,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:57,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-04 12:07:57,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE === [qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-04 12:07:57,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:57,045 INFO L85 PathProgramCache]: Analyzing trace with hash 133754479, now seen corresponding path program 1 times [2022-11-04 12:07:57,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:57,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141926802] [2022-11-04 12:07:57,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:57,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:57,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:57,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141926802] [2022-11-04 12:07:57,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141926802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:57,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:57,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:07:57,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154356800] [2022-11-04 12:07:57,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:57,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:07:57,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:57,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:07:57,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:07:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:57,247 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:57,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-04 12:07:57,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:57,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:58,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-04 12:07:58,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE === [qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-04 12:07:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:58,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1028687416, now seen corresponding path program 1 times [2022-11-04 12:07:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:58,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607815658] [2022-11-04 12:07:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:59,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:59,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607815658] [2022-11-04 12:07:59,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607815658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:59,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:59,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:07:59,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085614020] [2022-11-04 12:07:59,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:59,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:07:59,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:59,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:07:59,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:07:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:59,010 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:59,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-11-04 12:07:59,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:59,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:59,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-04 12:08:00,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE === [qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-04 12:08:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:00,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1849859365, now seen corresponding path program 1 times [2022-11-04 12:08:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:00,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365896670] [2022-11-04 12:08:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:00,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:08:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:08:00,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:08:00,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365896670] [2022-11-04 12:08:00,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365896670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:08:00,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:08:00,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-04 12:08:00,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607265777] [2022-11-04 12:08:00,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:08:00,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:08:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:08:00,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:08:00,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:08:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,449 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:08:00,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 45.5) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-11-04 12:08:00,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-04 12:08:00,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting qrcu_reader2Err8ASSERT_VIOLATIONDATA_RACE === [qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-04 12:08:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash 963370505, now seen corresponding path program 1 times [2022-11-04 12:08:00,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:00,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277222733] [2022-11-04 12:08:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:08:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:08:00,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:08:00,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277222733] [2022-11-04 12:08:00,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277222733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:08:00,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:08:00,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:08:00,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853611120] [2022-11-04 12:08:00,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:08:00,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:08:00,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:08:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:08:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:08:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,620 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:08:00,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2022-11-04 12:08:00,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-04 12:08:00,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting qrcu_reader2Err8ASSERT_VIOLATIONDATA_RACE === [qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-04 12:08:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash -200253028, now seen corresponding path program 1 times [2022-11-04 12:08:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:00,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416410497] [2022-11-04 12:08:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:00,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:08:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:08:00,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:08:00,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416410497] [2022-11-04 12:08:00,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416410497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:08:00,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:08:00,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-04 12:08:00,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125148613] [2022-11-04 12:08:00,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:08:00,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:08:00,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:08:00,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:08:00,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:08:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,777 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:08:00,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 51.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2022-11-04 12:08:00,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:00,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:00,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-04 12:08:09,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE === [qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-04 12:08:09,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:09,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1857367895, now seen corresponding path program 2 times [2022-11-04 12:08:09,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:09,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661666218] [2022-11-04 12:08:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:09,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:08:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:08:09,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:08:09,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661666218] [2022-11-04 12:08:09,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661666218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:08:09,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:08:09,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:08:09,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184102054] [2022-11-04 12:08:09,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:08:09,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:08:09,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:08:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:08:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:08:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:09,641 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:08:09,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-11-04 12:08:09,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:09,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:09,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:11,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:11,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:11,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:11,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-04 12:08:11,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE === [qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-04 12:08:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash -856325527, now seen corresponding path program 1 times [2022-11-04 12:08:11,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:11,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800966607] [2022-11-04 12:08:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:11,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:08:11,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-04 12:08:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:08:11,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-04 12:08:11,174 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-04 12:08:11,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE (12 of 13 remaining) [2022-11-04 12:08:11,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2022-11-04 12:08:11,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2022-11-04 12:08:11,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2022-11-04 12:08:11,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2022-11-04 12:08:11,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err8ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2022-11-04 12:08:11,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err4ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2022-11-04 12:08:11,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err5ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2022-11-04 12:08:11,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err6ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2022-11-04 12:08:11,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err9ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2022-11-04 12:08:11,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err10ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2022-11-04 12:08:11,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err11ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2022-11-04 12:08:11,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location qrcu_reader2Err12ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2022-11-04 12:08:11,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-04 12:08:11,199 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-11-04 12:08:11,201 INFO L307 ceAbstractionStarter]: Result for error location qrcu_reader2Thread1of1ForFork2 was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/4) [2022-11-04 12:08:11,205 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-04 12:08:11,206 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-04 12:08:11,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.11 12:08:11 BasicIcfg [2022-11-04 12:08:11,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-04 12:08:11,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-04 12:08:11,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-04 12:08:11,465 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-04 12:08:11,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 12:07:51" (3/4) ... [2022-11-04 12:08:11,468 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-04 12:08:11,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-04 12:08:11,469 INFO L158 Benchmark]: Toolchain (without parser) took 22042.95ms. Allocated memory was 92.3MB in the beginning and 725.6MB in the end (delta: 633.3MB). Free memory was 70.5MB in the beginning and 576.9MB in the end (delta: -506.3MB). Peak memory consumption was 125.2MB. Max. memory is 16.1GB. [2022-11-04 12:08:11,470 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.1MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-04 12:08:11,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.35ms. Allocated memory is still 92.3MB. Free memory was 70.3MB in the beginning and 56.7MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-04 12:08:11,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.30ms. Allocated memory is still 92.3MB. Free memory was 56.7MB in the beginning and 52.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-04 12:08:11,471 INFO L158 Benchmark]: Boogie Preprocessor took 43.09ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 49.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-04 12:08:11,471 INFO L158 Benchmark]: RCFGBuilder took 1574.98ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 49.9MB in the beginning and 58.0MB in the end (delta: -8.1MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2022-11-04 12:08:11,472 INFO L158 Benchmark]: TraceAbstraction took 19607.35ms. Allocated memory was 111.1MB in the beginning and 725.6MB in the end (delta: 614.5MB). Free memory was 57.7MB in the beginning and 576.9MB in the end (delta: -519.1MB). Peak memory consumption was 491.7MB. Max. memory is 16.1GB. [2022-11-04 12:08:11,472 INFO L158 Benchmark]: Witness Printer took 4.56ms. Allocated memory is still 725.6MB. Free memory is still 576.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-04 12:08:11,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.1MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.35ms. Allocated memory is still 92.3MB. Free memory was 70.3MB in the beginning and 56.7MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.30ms. Allocated memory is still 92.3MB. Free memory was 56.7MB in the beginning and 52.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.09ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 49.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1574.98ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 49.9MB in the beginning and 58.0MB in the end (delta: -8.1MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19607.35ms. Allocated memory was 111.1MB in the beginning and 725.6MB in the end (delta: 614.5MB). Free memory was 57.7MB in the beginning and 576.9MB in the end (delta: -519.1MB). Peak memory consumption was 491.7MB. Max. memory is 16.1GB. * Witness Printer took 4.56ms. Allocated memory is still 725.6MB. Free memory is still 576.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 497044, positive: 431789, positive conditional: 401791, positive unconditional: 29998, negative: 65255, negative conditional: 64945, negative unconditional: 310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 446708, positive: 431789, positive conditional: 401791, positive unconditional: 29998, negative: 14919, negative conditional: 14609, negative unconditional: 310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 446708, positive: 431789, positive conditional: 401791, positive unconditional: 29998, negative: 14919, negative conditional: 14609, negative unconditional: 310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 471747, positive: 431789, positive conditional: 905, positive unconditional: 430884, negative: 39958, negative conditional: 24134, negative unconditional: 15824, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 471747, positive: 431789, positive conditional: 905, positive unconditional: 430884, negative: 39958, negative conditional: 6163, negative unconditional: 33795, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 471747, positive: 431789, positive conditional: 905, positive unconditional: 430884, negative: 39958, negative conditional: 6163, negative unconditional: 33795, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30099, positive: 29671, positive conditional: 15, positive unconditional: 29656, negative: 428, negative conditional: 83, negative unconditional: 345, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30099, positive: 28628, positive conditional: 0, positive unconditional: 28628, negative: 1471, negative conditional: 0, negative unconditional: 1471, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1471, positive: 1043, positive conditional: 15, positive unconditional: 1028, negative: 418, negative conditional: 83, negative unconditional: 335, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10595, positive: 1708, positive conditional: 46, positive unconditional: 1662, negative: 1544, negative conditional: 307, negative unconditional: 1237, unknown: 7342, unknown conditional: 0, unknown unconditional: 7342] ], Cache Queries: [ total: 471747, positive: 402118, positive conditional: 890, positive unconditional: 401228, negative: 39530, negative conditional: 6080, negative unconditional: 33450, unknown: 30099, unknown conditional: 98, unknown unconditional: 30001] , Statistics on independence cache: Total cache size (in pairs): 30099, Positive cache size: 29671, Positive conditional cache size: 15, Positive unconditional cache size: 29656, Negative cache size: 428, Negative conditional cache size: 83, Negative unconditional cache size: 345, Eliminated conditions: 17971, Maximal queried relation: 4, Independence queries for same thread: 50336 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 11.7s, Number of persistent set computation: 23893, Number of trivial persistent sets: 21623, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 30308, positive: 29998, positive conditional: 0, positive unconditional: 29998, negative: 310, negative conditional: 0, negative unconditional: 310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 497044, positive: 431789, positive conditional: 401791, positive unconditional: 29998, negative: 65255, negative conditional: 64945, negative unconditional: 310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 446708, positive: 431789, positive conditional: 401791, positive unconditional: 29998, negative: 14919, negative conditional: 14609, negative unconditional: 310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 446708, positive: 431789, positive conditional: 401791, positive unconditional: 29998, negative: 14919, negative conditional: 14609, negative unconditional: 310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 471747, positive: 431789, positive conditional: 905, positive unconditional: 430884, negative: 39958, negative conditional: 24134, negative unconditional: 15824, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 471747, positive: 431789, positive conditional: 905, positive unconditional: 430884, negative: 39958, negative conditional: 6163, negative unconditional: 33795, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 471747, positive: 431789, positive conditional: 905, positive unconditional: 430884, negative: 39958, negative conditional: 6163, negative unconditional: 33795, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30099, positive: 29671, positive conditional: 15, positive unconditional: 29656, negative: 428, negative conditional: 83, negative unconditional: 345, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30099, positive: 28628, positive conditional: 0, positive unconditional: 28628, negative: 1471, negative conditional: 0, negative unconditional: 1471, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1471, positive: 1043, positive conditional: 15, positive unconditional: 1028, negative: 418, negative conditional: 83, negative unconditional: 335, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10595, positive: 1708, positive conditional: 46, positive unconditional: 1662, negative: 1544, negative conditional: 307, negative unconditional: 1237, unknown: 7342, unknown conditional: 0, unknown unconditional: 7342] ], Cache Queries: [ total: 471747, positive: 402118, positive conditional: 890, positive unconditional: 401228, negative: 39530, negative conditional: 6080, negative unconditional: 33450, unknown: 30099, unknown conditional: 98, unknown unconditional: 30001] , Statistics on independence cache: Total cache size (in pairs): 30099, Positive cache size: 29671, Positive conditional cache size: 15, Positive unconditional cache size: 29656, Negative cache size: 428, Negative conditional cache size: 83, Negative unconditional cache size: 345, Eliminated conditions: 17971, Maximal queried relation: 4, Independence queries for same thread: 50336 - DataRaceFoundResult [Line: 756]: Data race detected Data race detected The following path leads to a data race: [L689] 0 int idx=0; VAL [idx=0] [L690] 0 int ctr1=1, ctr2=0; VAL [ctr1=1, ctr2=0, idx=0] [L691] 0 int readerprogress1=0, readerprogress2=0; VAL [ctr1=1, ctr2=0, idx=0, readerprogress1=0, readerprogress2=0] [L692] 0 pthread_mutex_t mutex; VAL [ctr1=1, ctr2=0, idx=0, mutex={3:0}, readerprogress1=0, readerprogress2=0] [L782] 0 pthread_t t1, t2, t3; VAL [ctr1=1, ctr2=0, idx=0, mutex={3:0}, readerprogress1=0, readerprogress2=0, t1={6:0}, t2={7:0}, t3={10:0}] [L784] FCALL, FORK 0 pthread_create(&t1, 0, qrcu_reader1, 0) VAL [ctr1=1, ctr2=0, idx=0, mutex={3:0}, pthread_create(&t1, 0, qrcu_reader1, 0)=-2, readerprogress1=0, readerprogress2=0, t1={6:0}, t2={7:0}, t3={10:0}] [L724] 1 int myidx; VAL [arg={0:0}, arg={0:0}, ctr1=1, ctr2=0, idx=0, mutex={3:0}, readerprogress1=0, readerprogress2=0] [L725] COND TRUE 1 1 VAL [arg={0:0}, arg={0:0}, ctr1=1, ctr2=0, idx=0, mutex={3:0}, readerprogress1=0, readerprogress2=0] [L726] 1 myidx = idx VAL [arg={0:0}, arg={0:0}, ctr1=1, ctr2=0, idx=0, mutex={3:0}, readerprogress1=0, readerprogress2=0] [L726] 1 myidx = idx VAL [arg={0:0}, arg={0:0}, ctr1=1, ctr2=0, idx=0, mutex={3:0}, readerprogress1=0, readerprogress2=0] [L726] 1 myidx = idx VAL [arg={0:0}, arg={0:0}, ctr1=1, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=0, readerprogress2=0] [L785] FCALL, FORK 0 pthread_create(&t2, 0, qrcu_reader2, 0) VAL [ctr1=1, ctr2=0, idx=0, mutex={3:0}, pthread_create(&t2, 0, qrcu_reader2, 0)=-1, readerprogress1=0, readerprogress2=0, t1={6:0}, t2={7:0}, t3={10:0}] [L727] COND TRUE 1 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, arg={0:0}, arg={0:0}, ctr1=1, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=0, readerprogress2=0] [L743] 2 int myidx; VAL [arg={0:0}, arg={0:0}, ctr1=1, ctr2=0, idx=0, mutex={3:0}, readerprogress1=0, readerprogress2=0] [L744] COND TRUE 2 1 VAL [arg={0:0}, arg={0:0}, ctr1=1, ctr2=0, idx=0, mutex={3:0}, readerprogress1=0, readerprogress2=0] [L728] CALL 1 __VERIFIER_atomic_use1(myidx) [L694] EXPR 1 myidx <= 0 && ctr1>0 [L694] EXPR 1 ctr1>0 [L694] EXPR 1 myidx <= 0 && ctr1>0 [L694] CALL 1 assume_abort_if_not(myidx <= 0 && ctr1>0) [L3] COND FALSE 1 !(!cond) [L694] RET 1 assume_abort_if_not(myidx <= 0 && ctr1>0) [L695] 1 ctr1++ [L728] RET 1 __VERIFIER_atomic_use1(myidx) [L745] 2 myidx = idx VAL [arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, readerprogress1=0, readerprogress2=0] [L737] 1 readerprogress1 = 1 VAL [arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=1, readerprogress2=0] [L745] 2 myidx = idx VAL [arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, readerprogress1=1, readerprogress2=0] [L745] 2 myidx = idx VAL [arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=1, readerprogress2=0] [L786] FCALL, FORK 0 pthread_create(&t3, 0, qrcu_updater, 0) VAL [ctr1=2, ctr2=0, idx=0, mutex={3:0}, pthread_create(&t3, 0, qrcu_updater, 0)=0, readerprogress1=1, readerprogress2=0, t1={6:0}, t2={7:0}, t3={10:0}] [L737] 1 readerprogress1 = 1 VAL [arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=1, readerprogress1 = 1=52, readerprogress2=0] [L737] 1 readerprogress1 = 1 VAL [arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=1, readerprogress1 = 1=52, readerprogress2=0] [L746] COND TRUE 2 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=1, readerprogress2=0] [L762] 3 int i; VAL [arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, readerprogress1=1, readerprogress2=0] [L763] 3 int readerstart1, readerstart2; VAL [arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, readerprogress1=1, readerprogress2=0, readerstart1={11:0}] [L787] 0 \read(t1) VAL [\read(t1)=-2, ctr1=2, ctr2=0, idx=0, mutex={3:0}, readerprogress1=1, readerprogress2=0, t1={6:0}, t2={7:0}, t3={10:0}] [L738] 1 readerprogress1 = 2 VAL [arg={0:0}, arg={0:0}, ctr1=2, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=2, readerprogress2=0] [L747] CALL 2 __VERIFIER_atomic_use1(myidx) [L694] EXPR 2 myidx <= 0 && ctr1>0 [L694] EXPR 2 ctr1>0 [L694] EXPR 2 myidx <= 0 && ctr1>0 [L694] CALL 2 assume_abort_if_not(myidx <= 0 && ctr1>0) [L3] COND FALSE 2 !(!cond) [L694] RET 2 assume_abort_if_not(myidx <= 0 && ctr1>0) [L695] 2 ctr1++ [L747] RET 2 __VERIFIER_atomic_use1(myidx) [L763] 3 int readerstart1, readerstart2; VAL [arg={0:0}, arg={0:0}, ctr1=3, ctr2=0, idx=0, mutex={3:0}, readerprogress1=2, readerprogress2=0, readerstart1={11:0}, readerstart2={5:0}] [L756] 2 readerprogress2 = 1 VAL [arg={0:0}, arg={0:0}, ctr1=3, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=2, readerprogress2=1] [L764] 3 int sum; VAL [arg={0:0}, arg={0:0}, ctr1=3, ctr2=0, idx=0, mutex={3:0}, readerprogress1=2, readerprogress2=1, readerstart1={11:0}, readerstart2={5:0}] [L738] 1 readerprogress1 = 2 VAL [arg={0:0}, arg={0:0}, ctr1=3, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=2, readerprogress1 = 2=50, readerprogress2=1] [L738] 1 readerprogress1 = 2 VAL [arg={0:0}, arg={0:0}, ctr1=3, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=2, readerprogress1 = 2=50, readerprogress2=1] [L756] 2 readerprogress2 = 1 VAL [arg={0:0}, arg={0:0}, ctr1=3, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=2, readerprogress2=1, readerprogress2 = 1=51] [L765] CALL 3 __VERIFIER_atomic_take_snapshot(&readerstart1, &readerstart2) [L706] 3 *readerstart1 = readerprogress1 [L707] 3 *readerstart2 = readerprogress2 [L765] RET 3 __VERIFIER_atomic_take_snapshot(&readerstart1, &readerstart2) [L756] 2 readerprogress2 = 1 VAL [arg={0:0}, arg={0:0}, ctr1=3, ctr2=0, idx=0, mutex={3:0}, myidx=0, readerprogress1=2, readerprogress2=1, readerprogress2 = 1=51] Now there is a data race on ~readerprogress2~0 between C: *readerstart2 = readerprogress2 [707] and C: readerprogress2 = 1 [756] - UnprovableResult [Line: 745]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: qrcu_reader2Thread1of1ForFork2 with 1 thread instances CFG has 7 procedures, 567 locations, 118 error locations. Started 1 CEGAR loops. OverallTime: 19.0s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 2, EmptinessCheckTime: 17.8s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 673 NumberOfCodeBlocks, 673 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 574 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-04 12:08:11,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-11-04 12:08:11,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539f1da3-ebc7-4336-9188-367a7e5002d1/bin/ugemcutter-C1kR7RIaUi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE