./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R --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 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 --- 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-38b53e6 [2022-11-25 18:30:25,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:30:25,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:30:25,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:30:25,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:30:25,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:30:25,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:30:25,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:30:25,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:30:25,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:30:25,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:30:25,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:30:25,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:30:25,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:30:25,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:30:25,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:30:25,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:30:25,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:30:25,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:30:25,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:30:25,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:30:26,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:30:26,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:30:26,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:30:26,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:30:26,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:30:26,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:30:26,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:30:26,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:30:26,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:30:26,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:30:26,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:30:26,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:30:26,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:30:26,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:30:26,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:30:26,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:30:26,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:30:26,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:30:26,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:30:26,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:30:26,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 18:30:26,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:30:26,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:30:26,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:30:26,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:30:26,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:30:26,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:30:26,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:30:26,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:30:26,080 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:30:26,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:30:26,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:30:26,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:30:26,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:30:26,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:30:26,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:30:26,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:30:26,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:30:26,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:30:26,083 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 18:30:26,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:30:26,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:30:26,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:30:26,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:30:26,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:30:26,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:30:26,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:30:26,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:30:26,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:30:26,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:30:26,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:30:26,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:30:26,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:30:26,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:30:26,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:30:26,088 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:30:26,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:30:26,088 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_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 [2022-11-25 18:30:26,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:30:26,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:30:26,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:30:26,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:30:26,431 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:30:26,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/singleton-b.i [2022-11-25 18:30:29,544 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:30:29,907 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:30:29,908 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/sv-benchmarks/c/pthread/singleton-b.i [2022-11-25 18:30:29,953 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/data/48580c3f3/b73c79ddc2164c44ab302009e0faad27/FLAG229835f48 [2022-11-25 18:30:29,971 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/data/48580c3f3/b73c79ddc2164c44ab302009e0faad27 [2022-11-25 18:30:29,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:30:29,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:30:29,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:30:29,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:30:29,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:30:29,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:30:29" (1/1) ... [2022-11-25 18:30:29,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72328ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:29, skipping insertion in model container [2022-11-25 18:30:29,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:30:29" (1/1) ... [2022-11-25 18:30:29,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:30:30,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:30:30,728 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_c8b91810-b820-4b9e-9b9e-8505a17d6af1/sv-benchmarks/c/pthread/singleton-b.i[55202,55215] [2022-11-25 18:30:30,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:30:30,793 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:30:30,859 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_c8b91810-b820-4b9e-9b9e-8505a17d6af1/sv-benchmarks/c/pthread/singleton-b.i[55202,55215] [2022-11-25 18:30:30,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:30:30,970 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:30:30,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30 WrapperNode [2022-11-25 18:30:30,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:30:30,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:30:30,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:30:30,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:30:30,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,043 INFO L138 Inliner]: procedures = 323, calls = 47, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-11-25 18:30:31,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:30:31,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:30:31,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:30:31,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:30:31,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:30:31,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:30:31,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:30:31,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:30:31,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (1/1) ... [2022-11-25 18:30:31,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:30:31,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:30:31,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:30:31,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b91810-b820-4b9e-9b9e-8505a17d6af1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:30:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:30:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:30:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:30:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-25 18:30:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-25 18:30:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:30:31,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:30:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:30:31,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:30:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:30:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:30:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:30:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:30:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:30:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:30:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:30:31,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:30:31,185 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:30:31,444 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:30:31,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:30:31,851 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:30:31,862 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:30:31,862 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:30:31,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:30:31 BoogieIcfgContainer [2022-11-25 18:30:31,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:30:31,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:30:31,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:30:31,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:30:31,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:30:29" (1/3) ... [2022-11-25 18:30:31,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d723c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:30:31, skipping insertion in model container [2022-11-25 18:30:31,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:30:30" (2/3) ... [2022-11-25 18:30:31,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d723c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:30:31, skipping insertion in model container [2022-11-25 18:30:31,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:30:31" (3/3) ... [2022-11-25 18:30:31,876 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton-b.i [2022-11-25 18:30:31,886 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:30:31,899 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:30:31,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-25 18:30:31,899 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:30:32,139 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-25 18:30:32,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 296 transitions, 699 flow [2022-11-25 18:30:32,283 INFO L130 PetriNetUnfolder]: 6/209 cut-off events. [2022-11-25 18:30:32,283 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:30:32,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 209 events. 6/209 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 191 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-11-25 18:30:32,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 296 transitions, 699 flow [2022-11-25 18:30:32,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 192 transitions, 435 flow [2022-11-25 18:30:32,303 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:30:32,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 192 transitions, 435 flow [2022-11-25 18:30:32,322 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 192 transitions, 435 flow [2022-11-25 18:30:32,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 192 transitions, 435 flow [2022-11-25 18:30:32,415 INFO L130 PetriNetUnfolder]: 5/192 cut-off events. [2022-11-25 18:30:32,416 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:30:32,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 192 events. 5/192 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 183 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-11-25 18:30:32,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 7920 [2022-11-25 18:30:37,264 INFO L134 LiptonReduction]: Checked pairs total: 36268 [2022-11-25 18:30:37,264 INFO L136 LiptonReduction]: Total number of compositions: 104 [2022-11-25 18:30:37,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:30:37,289 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;@4c3e93b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:30:37,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-25 18:30:37,294 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-11-25 18:30:37,294 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:30:37,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:37,295 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:30:37,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-25 18:30:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:37,302 INFO L85 PathProgramCache]: Analyzing trace with hash 659867652, now seen corresponding path program 1 times [2022-11-25 18:30:37,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:37,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606895180] [2022-11-25 18:30:37,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:37,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:30:37,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:37,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606895180] [2022-11-25 18:30:37,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606895180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:30:37,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:30:37,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:30:37,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806408981] [2022-11-25 18:30:37,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:30:37,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:30:37,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:30:37,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:30:37,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 402 [2022-11-25 18:30:37,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 98 transitions, 247 flow. Second operand has 2 states, 2 states have (on average 267.5) internal successors, (535), 2 states have internal predecessors, (535), 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) [2022-11-25 18:30:37,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:30:37,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 402 [2022-11-25 18:30:37,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:30:39,963 INFO L130 PetriNetUnfolder]: 8612/13788 cut-off events. [2022-11-25 18:30:39,964 INFO L131 PetriNetUnfolder]: For 993/1003 co-relation queries the response was YES. [2022-11-25 18:30:40,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26243 conditions, 13788 events. 8612/13788 cut-off events. For 993/1003 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 89490 event pairs, 8358 based on Foata normal form. 1/12972 useless extension candidates. Maximal degree in co-relation 26226. Up to 11409 conditions per place. [2022-11-25 18:30:40,281 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 43 selfloop transitions, 0 changer transitions 1/91 dead transitions. [2022-11-25 18:30:40,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 91 transitions, 321 flow [2022-11-25 18:30:40,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:30:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:30:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 581 transitions. [2022-11-25 18:30:40,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.722636815920398 [2022-11-25 18:30:40,306 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 581 transitions. [2022-11-25 18:30:40,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 581 transitions. [2022-11-25 18:30:40,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:30:40,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 581 transitions. [2022-11-25 18:30:40,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 290.5) internal successors, (581), 2 states have internal predecessors, (581), 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) [2022-11-25 18:30:40,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 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) [2022-11-25 18:30:40,332 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 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) [2022-11-25 18:30:40,335 INFO L175 Difference]: Start difference. First operand has 112 places, 98 transitions, 247 flow. Second operand 2 states and 581 transitions. [2022-11-25 18:30:40,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 91 transitions, 321 flow [2022-11-25 18:30:40,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 287 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-25 18:30:40,369 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 196 flow [2022-11-25 18:30:40,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=196, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2022-11-25 18:30:40,376 INFO L288 CegarLoopForPetriNet]: 112 programPoint places, -18 predicate places. [2022-11-25 18:30:40,377 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 196 flow [2022-11-25 18:30:40,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 267.5) internal successors, (535), 2 states have internal predecessors, (535), 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) [2022-11-25 18:30:40,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:40,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:30:40,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:30:40,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-25 18:30:40,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1203606294, now seen corresponding path program 1 times [2022-11-25 18:30:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:40,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484036359] [2022-11-25 18:30:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:40,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:30:40,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:40,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484036359] [2022-11-25 18:30:40,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484036359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:30:40,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:30:40,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:30:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354015711] [2022-11-25 18:30:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:30:40,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:30:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:40,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:30:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:30:41,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 402 [2022-11-25 18:30:41,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 253.33333333333334) internal successors, (1520), 6 states have internal predecessors, (1520), 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) [2022-11-25 18:30:41,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:30:41,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 402 [2022-11-25 18:30:41,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:30:51,634 INFO L130 PetriNetUnfolder]: 72462/100479 cut-off events. [2022-11-25 18:30:51,634 INFO L131 PetriNetUnfolder]: For 2032/2590 co-relation queries the response was YES. [2022-11-25 18:30:51,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195692 conditions, 100479 events. 72462/100479 cut-off events. For 2032/2590 co-relation queries the response was YES. Maximal size of possible extension queue 2733. Compared 665215 event pairs, 34825 based on Foata normal form. 1/95140 useless extension candidates. Maximal degree in co-relation 195689. Up to 58128 conditions per place. [2022-11-25 18:30:52,478 INFO L137 encePairwiseOnDemand]: 392/402 looper letters, 185 selfloop transitions, 21 changer transitions 12/258 dead transitions. [2022-11-25 18:30:52,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 258 transitions, 1028 flow [2022-11-25 18:30:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:30:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:30:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1731 transitions. [2022-11-25 18:30:52,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7176616915422885 [2022-11-25 18:30:52,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1731 transitions. [2022-11-25 18:30:52,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1731 transitions. [2022-11-25 18:30:52,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:30:52,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1731 transitions. [2022-11-25 18:30:52,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.5) internal successors, (1731), 6 states have internal predecessors, (1731), 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) [2022-11-25 18:30:52,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 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) [2022-11-25 18:30:52,504 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 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) [2022-11-25 18:30:52,504 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 196 flow. Second operand 6 states and 1731 transitions. [2022-11-25 18:30:52,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 258 transitions, 1028 flow [2022-11-25 18:30:52,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 258 transitions, 1028 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:30:52,512 INFO L231 Difference]: Finished difference. Result has 103 places, 110 transitions, 338 flow [2022-11-25 18:30:52,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=103, PETRI_TRANSITIONS=110} [2022-11-25 18:30:52,514 INFO L288 CegarLoopForPetriNet]: 112 programPoint places, -9 predicate places. [2022-11-25 18:30:52,514 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 110 transitions, 338 flow [2022-11-25 18:30:52,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.33333333333334) internal successors, (1520), 6 states have internal predecessors, (1520), 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) [2022-11-25 18:30:52,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:52,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:30:52,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:30:52,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-25 18:30:52,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash 51660910, now seen corresponding path program 1 times [2022-11-25 18:30:52,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:52,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896446928] [2022-11-25 18:30:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:52,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:30:52,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:52,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896446928] [2022-11-25 18:30:52,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896446928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:30:52,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:30:52,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:30:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303677181] [2022-11-25 18:30:52,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:30:52,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:30:52,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:30:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:30:53,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 402 [2022-11-25 18:30:53,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 110 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 256.6) internal successors, (1283), 5 states have internal predecessors, (1283), 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) [2022-11-25 18:30:53,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:30:53,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 402 [2022-11-25 18:30:53,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:30:59,373 INFO L130 PetriNetUnfolder]: 37826/63551 cut-off events. [2022-11-25 18:30:59,373 INFO L131 PetriNetUnfolder]: For 23531/33084 co-relation queries the response was YES. [2022-11-25 18:30:59,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140449 conditions, 63551 events. 37826/63551 cut-off events. For 23531/33084 co-relation queries the response was YES. Maximal size of possible extension queue 2585. Compared 547367 event pairs, 8196 based on Foata normal form. 22/59147 useless extension candidates. Maximal degree in co-relation 140441. Up to 45231 conditions per place. [2022-11-25 18:30:59,870 INFO L137 encePairwiseOnDemand]: 394/402 looper letters, 80 selfloop transitions, 23 changer transitions 0/150 dead transitions. [2022-11-25 18:30:59,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 150 transitions, 699 flow [2022-11-25 18:30:59,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:30:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:30:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1347 transitions. [2022-11-25 18:30:59,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6701492537313433 [2022-11-25 18:30:59,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1347 transitions. [2022-11-25 18:30:59,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1347 transitions. [2022-11-25 18:30:59,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:30:59,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1347 transitions. [2022-11-25 18:30:59,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 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) [2022-11-25 18:30:59,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 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) [2022-11-25 18:30:59,889 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 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) [2022-11-25 18:30:59,889 INFO L175 Difference]: Start difference. First operand has 103 places, 110 transitions, 338 flow. Second operand 5 states and 1347 transitions. [2022-11-25 18:30:59,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 150 transitions, 699 flow [2022-11-25 18:31:00,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 150 transitions, 699 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:31:00,562 INFO L231 Difference]: Finished difference. Result has 107 places, 129 transitions, 555 flow [2022-11-25 18:31:00,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=555, PETRI_PLACES=107, PETRI_TRANSITIONS=129} [2022-11-25 18:31:00,564 INFO L288 CegarLoopForPetriNet]: 112 programPoint places, -5 predicate places. [2022-11-25 18:31:00,564 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 129 transitions, 555 flow [2022-11-25 18:31:00,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 256.6) internal successors, (1283), 5 states have internal predecessors, (1283), 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) [2022-11-25 18:31:00,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:31:00,565 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:31:00,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-25 18:31:00,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1713182171, now seen corresponding path program 1 times [2022-11-25 18:31:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:00,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883710930] [2022-11-25 18:31:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:31:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:00,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:00,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883710930] [2022-11-25 18:31:00,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883710930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:31:00,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:31:00,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:31:00,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807766009] [2022-11-25 18:31:00,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:31:00,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:31:00,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:00,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:31:00,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:31:00,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 402 [2022-11-25 18:31:00,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 129 transitions, 555 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-11-25 18:31:00,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:31:00,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 402 [2022-11-25 18:31:00,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand