./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 4e7fbc69 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_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS --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 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-4e7fbc6 [2022-11-23 03:42:16,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:42:16,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:42:16,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:42:16,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:42:16,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:42:16,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:42:16,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:42:16,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:42:16,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:42:16,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:42:16,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:42:16,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:42:16,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:42:16,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:42:16,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:42:16,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:42:16,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:42:16,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:42:16,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:42:16,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:42:16,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:42:16,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:42:16,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:42:16,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:42:16,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:42:16,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:42:16,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:42:16,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:42:16,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:42:16,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:42:16,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:42:16,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:42:16,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:42:16,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:42:16,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:42:16,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:42:16,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:42:16,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:42:16,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:42:16,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:42:16,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-23 03:42:17,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:42:17,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:42:17,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:42:17,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:42:17,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:42:17,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:42:17,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:42:17,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:42:17,024 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:42:17,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:42:17,024 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:42:17,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:42:17,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:42:17,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:42:17,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:42:17,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:42:17,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:42:17,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:42:17,026 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-23 03:42:17,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:42:17,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:42:17,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:42:17,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:42:17,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:42:17,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:42:17,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:42:17,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:42:17,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:42:17,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:42:17,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:42:17,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:42:17,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:42:17,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:42:17,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:42:17,030 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:42:17,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:42:17,031 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2022-11-23 03:42:17,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:42:17,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:42:17,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:42:17,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:42:17,432 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:42:17,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-11-23 03:42:20,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:42:21,111 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:42:21,112 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-11-23 03:42:21,136 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/data/a7454fb9f/d3ce68f1209f4222941dc53f8ae2afae/FLAG3fd773253 [2022-11-23 03:42:21,155 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/data/a7454fb9f/d3ce68f1209f4222941dc53f8ae2afae [2022-11-23 03:42:21,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:42:21,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:42:21,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:42:21,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:42:21,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:42:21,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:21,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54312bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21, skipping insertion in model container [2022-11-23 03:42:21,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:21,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:42:21,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:42:21,721 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-11-23 03:42:21,728 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-11-23 03:42:21,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:42:21,795 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:42:21,877 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-11-23 03:42:21,883 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-11-23 03:42:21,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:42:21,955 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:42:21,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21 WrapperNode [2022-11-23 03:42:21,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:42:21,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:42:21,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:42:21,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:42:21,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,054 INFO L138 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 473 [2022-11-23 03:42:22,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:42:22,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:42:22,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:42:22,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:42:22,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:42:22,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:42:22,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:42:22,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:42:22,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (1/1) ... [2022-11-23 03:42:22,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:42:22,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:42:22,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:42:22,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dc2a05-3c9f-4d23-8d61-bfd7dfed2851/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:42:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-11-23 03:42:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-11-23 03:42:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-11-23 03:42:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-11-23 03:42:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:42:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:42:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-11-23 03:42:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-11-23 03:42:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 03:42:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:42:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:42:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:42:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:42:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:42:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:42:22,275 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:42:22,575 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:42:22,577 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:42:23,573 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:42:24,020 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:42:24,021 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 03:42:24,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:24 BoogieIcfgContainer [2022-11-23 03:42:24,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:42:24,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:42:24,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:42:24,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:42:24,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:42:21" (1/3) ... [2022-11-23 03:42:24,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ef70b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:24, skipping insertion in model container [2022-11-23 03:42:24,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:21" (2/3) ... [2022-11-23 03:42:24,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ef70b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:24, skipping insertion in model container [2022-11-23 03:42:24,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:24" (3/3) ... [2022-11-23 03:42:24,039 INFO L112 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2022-11-23 03:42:24,056 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:42:24,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:42:24,071 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2022-11-23 03:42:24,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:42:24,279 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 03:42:24,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 341 transitions, 706 flow [2022-11-23 03:42:24,508 INFO L130 PetriNetUnfolder]: 18/338 cut-off events. [2022-11-23 03:42:24,508 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:42:24,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 338 events. 18/338 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1056 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 284. Up to 4 conditions per place. [2022-11-23 03:42:24,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 341 transitions, 706 flow [2022-11-23 03:42:24,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 326 transitions, 667 flow [2022-11-23 03:42:24,572 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:42:24,618 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 326 transitions, 667 flow [2022-11-23 03:42:24,621 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 326 transitions, 667 flow [2022-11-23 03:42:24,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 326 transitions, 667 flow [2022-11-23 03:42:24,782 INFO L130 PetriNetUnfolder]: 18/326 cut-off events. [2022-11-23 03:42:24,783 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:42:24,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 326 events. 18/326 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1061 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 284. Up to 4 conditions per place. [2022-11-23 03:42:24,815 INFO L119 LiptonReduction]: Number of co-enabled transitions 47166 [2022-11-23 03:42:54,554 INFO L134 LiptonReduction]: Checked pairs total: 254815 [2022-11-23 03:42:54,555 INFO L136 LiptonReduction]: Total number of compositions: 272 [2022-11-23 03:42:54,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:42:54,579 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;@1f28da71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:42:54,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2022-11-23 03:42:54,583 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-11-23 03:42:54,583 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:42:54,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:42:54,584 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 03:42:54,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_reader1Err2ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 115 more)] === [2022-11-23 03:42:54,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:42:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash 59418543, now seen corresponding path program 1 times [2022-11-23 03:42:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:42:54,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365241312] [2022-11-23 03:42:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:42:54,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:42:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:42:54,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:42:54,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365241312] [2022-11-23 03:42:54,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365241312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:42:54,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:42:54,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:42:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255954760] [2022-11-23 03:42:54,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:42:54,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:42:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:42:54,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:42:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:42:54,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 613 [2022-11-23 03:42:54,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 186 transitions, 387 flow. Second operand has 2 states, 2 states have (on average 296.0) internal successors, (592), 2 states have internal predecessors, (592), 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) [2022-11-23 03:42:54,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:42:54,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 613 [2022-11-23 03:42:54,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:43:00,852 INFO L130 PetriNetUnfolder]: 22613/42133 cut-off events. [2022-11-23 03:43:00,853 INFO L131 PetriNetUnfolder]: For 819/819 co-relation queries the response was YES. [2022-11-23 03:43:01,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73437 conditions, 42133 events. 22613/42133 cut-off events. For 819/819 co-relation queries the response was YES. Maximal size of possible extension queue 1196. Compared 386752 event pairs, 18261 based on Foata normal form. 1388/36296 useless extension candidates. Maximal degree in co-relation 66742. Up to 30693 conditions per place. [2022-11-23 03:43:01,336 INFO L137 encePairwiseOnDemand]: 582/613 looper letters, 71 selfloop transitions, 0 changer transitions 0/155 dead transitions. [2022-11-23 03:43:01,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 155 transitions, 467 flow [2022-11-23 03:43:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:43:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:43:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 690 transitions. [2022-11-23 03:43:01,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5628058727569332 [2022-11-23 03:43:01,362 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 690 transitions. [2022-11-23 03:43:01,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 690 transitions. [2022-11-23 03:43:01,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:43:01,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 690 transitions. [2022-11-23 03:43:01,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 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) [2022-11-23 03:43:01,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 613.0) internal successors, (1839), 3 states have internal predecessors, (1839), 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) [2022-11-23 03:43:01,389 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 613.0) internal successors, (1839), 3 states have internal predecessors, (1839), 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) [2022-11-23 03:43:01,391 INFO L175 Difference]: Start difference. First operand has 180 places, 186 transitions, 387 flow. Second operand 2 states and 690 transitions. [2022-11-23 03:43:01,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 155 transitions, 467 flow [2022-11-23 03:43:01,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 155 transitions, 458 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-23 03:43:01,496 INFO L231 Difference]: Finished difference. Result has 149 places, 155 transitions, 316 flow [2022-11-23 03:43:01,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=613, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=316, PETRI_PLACES=149, PETRI_TRANSITIONS=155} [2022-11-23 03:43:01,503 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -31 predicate places. [2022-11-23 03:43:01,504 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 155 transitions, 316 flow [2022-11-23 03:43:01,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 296.0) internal successors, (592), 2 states have internal predecessors, (592), 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) [2022-11-23 03:43:01,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:43:01,505 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 03:43:01,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:43:01,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 115 more)] === [2022-11-23 03:43:01,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:43:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1841971318, now seen corresponding path program 1 times [2022-11-23 03:43:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:43:01,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352261028] [2022-11-23 03:43:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:43:01,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:43:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:43:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:43:01,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:43:01,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352261028] [2022-11-23 03:43:01,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352261028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:43:01,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:43:01,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:43:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69598453] [2022-11-23 03:43:01,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:43:01,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:43:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:43:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:43:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:43:01,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 613 [2022-11-23 03:43:01,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 155 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 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) [2022-11-23 03:43:01,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:43:01,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 613 [2022-11-23 03:43:01,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:43:07,036 INFO L130 PetriNetUnfolder]: 35182/61649 cut-off events. [2022-11-23 03:43:07,036 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2022-11-23 03:43:07,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110429 conditions, 61649 events. 35182/61649 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 1692. Compared 560993 event pairs, 11611 based on Foata normal form. 0/52108 useless extension candidates. Maximal degree in co-relation 110426. Up to 39369 conditions per place. [2022-11-23 03:43:07,525 INFO L137 encePairwiseOnDemand]: 601/613 looper letters, 122 selfloop transitions, 9 changer transitions 0/210 dead transitions. [2022-11-23 03:43:07,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 210 transitions, 693 flow [2022-11-23 03:43:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:43:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:43:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 974 transitions. [2022-11-23 03:43:07,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5296356715606307 [2022-11-23 03:43:07,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 974 transitions. [2022-11-23 03:43:07,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 974 transitions. [2022-11-23 03:43:07,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:43:07,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 974 transitions. [2022-11-23 03:43:07,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 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) [2022-11-23 03:43:07,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 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) [2022-11-23 03:43:07,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 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) [2022-11-23 03:43:07,543 INFO L175 Difference]: Start difference. First operand has 149 places, 155 transitions, 316 flow. Second operand 3 states and 974 transitions. [2022-11-23 03:43:07,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 210 transitions, 693 flow [2022-11-23 03:43:07,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 210 transitions, 693 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:43:07,552 INFO L231 Difference]: Finished difference. Result has 152 places, 161 transitions, 382 flow [2022-11-23 03:43:07,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=613, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=152, PETRI_TRANSITIONS=161} [2022-11-23 03:43:07,553 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -28 predicate places. [2022-11-23 03:43:07,554 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 161 transitions, 382 flow [2022-11-23 03:43:07,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 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) [2022-11-23 03:43:07,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:43:07,555 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:43:07,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:43:07,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting qrcu_updaterErr4ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 115 more)] === [2022-11-23 03:43:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:43:07,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1125537467, now seen corresponding path program 1 times [2022-11-23 03:43:07,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:43:07,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328851483] [2022-11-23 03:43:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:43:07,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:43:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:43:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:43:07,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:43:07,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328851483] [2022-11-23 03:43:07,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328851483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:43:07,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:43:07,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:43:07,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425317077] [2022-11-23 03:43:07,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:43:07,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:43:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:43:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:43:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:43:07,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 613 [2022-11-23 03:43:07,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 161 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 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) [2022-11-23 03:43:07,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:43:07,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 613 [2022-11-23 03:43:07,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:43:16,702 INFO L130 PetriNetUnfolder]: 61476/105689 cut-off events. [2022-11-23 03:43:16,702 INFO L131 PetriNetUnfolder]: For 8777/8799 co-relation queries the response was YES. [2022-11-23 03:43:16,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199526 conditions, 105689 events. 61476/105689 cut-off events. For 8777/8799 co-relation queries the response was YES. Maximal size of possible extension queue 2759. Compared 996607 event pairs, 22684 based on Foata normal form. 0/88409 useless extension candidates. Maximal degree in co-relation 199521. Up to 51386 conditions per place. [2022-11-23 03:43:17,393 INFO L137 encePairwiseOnDemand]: 585/613 looper letters, 130 selfloop transitions, 21 changer transitions 0/221 dead transitions. [2022-11-23 03:43:17,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 221 transitions, 824 flow [2022-11-23 03:43:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:43:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:43:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 964 transitions. [2022-11-23 03:43:17,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5241979336595977 [2022-11-23 03:43:17,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 964 transitions. [2022-11-23 03:43:17,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 964 transitions. [2022-11-23 03:43:17,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:43:17,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 964 transitions. [2022-11-23 03:43:17,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 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) [2022-11-23 03:43:17,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 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) [2022-11-23 03:43:17,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 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) [2022-11-23 03:43:17,405 INFO L175 Difference]: Start difference. First operand has 152 places, 161 transitions, 382 flow. Second operand 3 states and 964 transitions. [2022-11-23 03:43:17,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 221 transitions, 824 flow [2022-11-23 03:43:17,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 221 transitions, 800 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:43:17,555 INFO L231 Difference]: Finished difference. Result has 154 places, 180 transitions, 538 flow [2022-11-23 03:43:17,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=613, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=154, PETRI_TRANSITIONS=180} [2022-11-23 03:43:17,557 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -26 predicate places. [2022-11-23 03:43:17,557 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 180 transitions, 538 flow [2022-11-23 03:43:17,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 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) [2022-11-23 03:43:17,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:43:17,558 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:43:17,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:43:17,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting qrcu_updaterErr6ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 115 more)] === [2022-11-23 03:43:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:43:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1125537593, now seen corresponding path program 1 times [2022-11-23 03:43:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:43:17,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478505476] [2022-11-23 03:43:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:43:17,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:43:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:43:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:43:17,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:43:17,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478505476] [2022-11-23 03:43:17,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478505476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:43:17,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:43:17,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:43:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655552108] [2022-11-23 03:43:17,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:43:17,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:43:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:43:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:43:17,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:43:17,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 613 [2022-11-23 03:43:17,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 180 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 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) [2022-11-23 03:43:17,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:43:17,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 613 [2022-11-23 03:43:17,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:43:31,229 INFO L130 PetriNetUnfolder]: 87707/152054 cut-off events. [2022-11-23 03:43:31,229 INFO L131 PetriNetUnfolder]: For 36990/37981 co-relation queries the response was YES. [2022-11-23 03:43:31,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315012 conditions, 152054 events. 87707/152054 cut-off events. For 36990/37981 co-relation queries the response was YES. Maximal size of possible extension queue 4162. Compared 1518474 event pairs, 31308 based on Foata normal form. 162/132554 useless extension candidates. Maximal degree in co-relation 315006. Up to 73346 conditions per place. [2022-11-23 03:43:32,665 INFO L137 encePairwiseOnDemand]: 585/613 looper letters, 146 selfloop transitions, 23 changer transitions 0/247 dead transitions. [2022-11-23 03:43:32,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 247 transitions, 1076 flow [2022-11-23 03:43:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:43:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:43:32,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 963 transitions. [2022-11-23 03:43:32,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5236541598694943 [2022-11-23 03:43:32,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 963 transitions. [2022-11-23 03:43:32,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 963 transitions. [2022-11-23 03:43:32,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:43:32,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 963 transitions. [2022-11-23 03:43:32,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 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) [2022-11-23 03:43:32,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 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) [2022-11-23 03:43:32,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 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) [2022-11-23 03:43:32,690 INFO L175 Difference]: Start difference. First operand has 154 places, 180 transitions, 538 flow. Second operand 3 states and 963 transitions. [2022-11-23 03:43:32,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 247 transitions, 1076 flow [2022-11-23 03:43:33,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 247 transitions, 1016 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:43:33,137 INFO L231 Difference]: Finished difference. Result has 156 places, 201 transitions, 694 flow [2022-11-23 03:43:33,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=613, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=694, PETRI_PLACES=156, PETRI_TRANSITIONS=201} [2022-11-23 03:43:33,139 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -24 predicate places. [2022-11-23 03:43:33,139 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 201 transitions, 694 flow [2022-11-23 03:43:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 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) [2022-11-23 03:43:33,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:43:33,140 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:43:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:43:33,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 115 more)] === [2022-11-23 03:43:33,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:43:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2488978, now seen corresponding path program 1 times [2022-11-23 03:43:33,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:43:33,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66689920] [2022-11-23 03:43:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:43:33,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:43:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:43:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:43:33,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:43:33,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66689920] [2022-11-23 03:43:33,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66689920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:43:33,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:43:33,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:43:33,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794371094] [2022-11-23 03:43:33,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:43:33,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:43:33,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:43:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:43:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:43:33,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 613 [2022-11-23 03:43:33,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 201 transitions, 694 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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) [2022-11-23 03:43:33,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:43:33,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 613 [2022-11-23 03:43:33,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand