./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8 --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 645ee85d2a671dd1acf511bbf13e9e3bda7e0b5cc29e8abc16fb4ed3af500077 --- 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-2329fc7 [2022-12-13 13:38:15,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:38:15,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:38:15,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:38:15,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:38:15,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:38:15,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:38:15,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:38:15,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:38:15,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:38:15,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:38:15,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:38:15,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:38:15,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:38:15,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:38:15,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:38:15,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:38:15,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:38:15,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:38:15,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:38:15,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:38:15,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:38:15,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:38:15,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:38:15,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:38:15,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:38:15,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:38:15,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:38:15,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:38:15,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:38:15,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:38:15,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:38:15,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:38:15,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:38:15,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:38:15,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:38:15,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:38:15,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:38:15,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:38:15,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:38:15,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:38:15,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 13:38:15,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:38:15,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:38:15,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:38:15,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:38:15,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:38:15,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:38:15,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:38:15,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:38:15,921 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:38:15,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:38:15,922 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:38:15,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:38:15,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:38:15,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:38:15,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:38:15,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:38:15,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:38:15,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:38:15,923 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 13:38:15,923 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:38:15,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:38:15,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:38:15,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:38:15,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:38:15,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:38:15,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:38:15,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:38:15,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:38:15,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:38:15,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:38:15,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:38:15,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:38:15,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:38:15,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:38:15,926 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:38:15,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:38:15,926 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:38:15,926 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_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 645ee85d2a671dd1acf511bbf13e9e3bda7e0b5cc29e8abc16fb4ed3af500077 [2022-12-13 13:38:16,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:38:16,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:38:16,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:38:16,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:38:16,136 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:38:16,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-1.i [2022-12-13 13:38:18,737 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:38:18,894 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:38:18,894 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-1.i [2022-12-13 13:38:18,902 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/data/4345b92d8/0b119788fbc34d63bc3bf80bf25854c4/FLAGb7d2e20b2 [2022-12-13 13:38:18,913 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/data/4345b92d8/0b119788fbc34d63bc3bf80bf25854c4 [2022-12-13 13:38:18,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:38:18,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:38:18,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:38:18,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:38:18,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:38:18,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:38:18" (1/1) ... [2022-12-13 13:38:18,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5bd0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:18, skipping insertion in model container [2022-12-13 13:38:18,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:38:18" (1/1) ... [2022-12-13 13:38:18,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:38:18,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:38:19,223 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_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-1.i[30035,30048] [2022-12-13 13:38:19,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:38:19,257 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:38:19,292 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_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-1.i[30035,30048] [2022-12-13 13:38:19,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:38:19,343 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:38:19,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19 WrapperNode [2022-12-13 13:38:19,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:38:19,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:38:19,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:38:19,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:38:19,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,393 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110 [2022-12-13 13:38:19,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:38:19,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:38:19,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:38:19,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:38:19,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,419 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:38:19,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:38:19,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:38:19,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:38:19,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (1/1) ... [2022-12-13 13:38:19,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:38:19,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:38:19,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:38:19,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:38:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-13 13:38:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-13 13:38:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 13:38:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 13:38:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:38:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:38:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:38:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:38:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:38:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:38:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:38:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:38:19,481 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:38:19,597 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:38:19,599 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:38:19,781 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:38:19,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:38:19,789 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 13:38:19,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:38:19 BoogieIcfgContainer [2022-12-13 13:38:19,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:38:19,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:38:19,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:38:19,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:38:19,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:38:18" (1/3) ... [2022-12-13 13:38:19,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5874ff05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:38:19, skipping insertion in model container [2022-12-13 13:38:19,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:38:19" (2/3) ... [2022-12-13 13:38:19,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5874ff05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:38:19, skipping insertion in model container [2022-12-13 13:38:19,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:38:19" (3/3) ... [2022-12-13 13:38:19,800 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-variant-1.i [2022-12-13 13:38:19,808 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:38:19,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:38:19,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 13:38:19,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:38:19,878 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 13:38:19,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 138 transitions, 286 flow [2022-12-13 13:38:19,948 INFO L130 PetriNetUnfolder]: 7/154 cut-off events. [2022-12-13 13:38:19,949 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:38:19,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 7/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2022-12-13 13:38:19,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 138 transitions, 286 flow [2022-12-13 13:38:19,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 137 transitions, 282 flow [2022-12-13 13:38:19,960 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:38:19,968 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 137 transitions, 282 flow [2022-12-13 13:38:19,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 137 transitions, 282 flow [2022-12-13 13:38:19,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 137 transitions, 282 flow [2022-12-13 13:38:19,993 INFO L130 PetriNetUnfolder]: 7/154 cut-off events. [2022-12-13 13:38:19,993 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:38:19,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 7/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2022-12-13 13:38:19,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 3398 [2022-12-13 13:38:23,450 INFO L134 LiptonReduction]: Checked pairs total: 9975 [2022-12-13 13:38:23,451 INFO L136 LiptonReduction]: Total number of compositions: 140 [2022-12-13 13:38:23,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:38:23,465 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;@5411be06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:38:23,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 13:38:23,467 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:38:23,467 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:38:23,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:23,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 13:38:23,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 13:38:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash 522, now seen corresponding path program 1 times [2022-12-13 13:38:23,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:23,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293071391] [2022-12-13 13:38:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:38:23,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:23,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293071391] [2022-12-13 13:38:23,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293071391] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:23,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:23,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 13:38:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487767161] [2022-12-13 13:38:23,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:38:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:23,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:38:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:38:23,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 278 [2022-12-13 13:38:23,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 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) [2022-12-13 13:38:23,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:38:23,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 278 [2022-12-13 13:38:23,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:38:23,662 INFO L130 PetriNetUnfolder]: 111/278 cut-off events. [2022-12-13 13:38:23,662 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:38:23,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 278 events. 111/278 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1441 event pairs, 99 based on Foata normal form. 49/276 useless extension candidates. Maximal degree in co-relation 485. Up to 197 conditions per place. [2022-12-13 13:38:23,664 INFO L137 encePairwiseOnDemand]: 272/278 looper letters, 15 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2022-12-13 13:38:23,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 94 flow [2022-12-13 13:38:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:38:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:38:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 283 transitions. [2022-12-13 13:38:23,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5089928057553957 [2022-12-13 13:38:23,675 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 283 transitions. [2022-12-13 13:38:23,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 283 transitions. [2022-12-13 13:38:23,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:38:23,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 283 transitions. [2022-12-13 13:38:23,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 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) [2022-12-13 13:38:23,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2022-12-13 13:38:23,685 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2022-12-13 13:38:23,686 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 76 flow. Second operand 2 states and 283 transitions. [2022-12-13 13:38:23,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 94 flow [2022-12-13 13:38:23,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:38:23,689 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 63 flow [2022-12-13 13:38:23,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=63, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2022-12-13 13:38:23,693 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2022-12-13 13:38:23,693 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 63 flow [2022-12-13 13:38:23,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 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) [2022-12-13 13:38:23,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:23,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 13:38:23,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:38:23,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 13:38:23,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:23,695 INFO L85 PathProgramCache]: Analyzing trace with hash 16020827, now seen corresponding path program 1 times [2022-12-13 13:38:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:23,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404280269] [2022-12-13 13:38:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:38:23,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:23,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404280269] [2022-12-13 13:38:23,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404280269] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:23,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:23,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:38:23,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705478680] [2022-12-13 13:38:23,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:23,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:38:23,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:38:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:38:23,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 278 [2022-12-13 13:38:23,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2022-12-13 13:38:23,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:38:23,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 278 [2022-12-13 13:38:23,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:38:23,873 INFO L130 PetriNetUnfolder]: 240/496 cut-off events. [2022-12-13 13:38:23,874 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:38:23,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 496 events. 240/496 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2625 event pairs, 141 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 938. Up to 330 conditions per place. [2022-12-13 13:38:23,877 INFO L137 encePairwiseOnDemand]: 272/278 looper letters, 25 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2022-12-13 13:38:23,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 142 flow [2022-12-13 13:38:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:38:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:38:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2022-12-13 13:38:23,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47961630695443647 [2022-12-13 13:38:23,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2022-12-13 13:38:23,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2022-12-13 13:38:23,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:38:23,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2022-12-13 13:38:23,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2022-12-13 13:38:23,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 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) [2022-12-13 13:38:23,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 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) [2022-12-13 13:38:23,882 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 63 flow. Second operand 3 states and 400 transitions. [2022-12-13 13:38:23,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 142 flow [2022-12-13 13:38:23,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:38:23,883 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 91 flow [2022-12-13 13:38:23,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2022-12-13 13:38:23,884 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2022-12-13 13:38:23,884 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 91 flow [2022-12-13 13:38:23,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2022-12-13 13:38:23,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:23,884 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:38:23,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:38:23,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 13:38:23,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash 496712068, now seen corresponding path program 1 times [2022-12-13 13:38:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:23,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599641755] [2022-12-13 13:38:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:38:23,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:23,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599641755] [2022-12-13 13:38:23,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599641755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:23,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:23,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:38:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969349050] [2022-12-13 13:38:23,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:23,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:38:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:38:23,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:38:23,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 278 [2022-12-13 13:38:23,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2022-12-13 13:38:23,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:38:23,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 278 [2022-12-13 13:38:23,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:38:24,025 INFO L130 PetriNetUnfolder]: 326/643 cut-off events. [2022-12-13 13:38:24,025 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-12-13 13:38:24,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 643 events. 326/643 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3068 event pairs, 271 based on Foata normal form. 0/562 useless extension candidates. Maximal degree in co-relation 1393. Up to 547 conditions per place. [2022-12-13 13:38:24,028 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 19 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-12-13 13:38:24,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 125 flow [2022-12-13 13:38:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:38:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:38:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-12-13 13:38:24,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43884892086330934 [2022-12-13 13:38:24,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-12-13 13:38:24,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-12-13 13:38:24,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:38:24,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-12-13 13:38:24,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:38:24,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 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) [2022-12-13 13:38:24,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 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) [2022-12-13 13:38:24,032 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 91 flow. Second operand 3 states and 366 transitions. [2022-12-13 13:38:24,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 125 flow [2022-12-13 13:38:24,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 117 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:38:24,034 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 79 flow [2022-12-13 13:38:24,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-12-13 13:38:24,035 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2022-12-13 13:38:24,035 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 79 flow [2022-12-13 13:38:24,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2022-12-13 13:38:24,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:24,035 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 13:38:24,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:38:24,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 13:38:24,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1093808717, now seen corresponding path program 1 times [2022-12-13 13:38:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:24,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077624777] [2022-12-13 13:38:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:38:24,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:38:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:38:24,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:38:24,106 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:38:24,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 13:38:24,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-12-13 13:38:24,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-12-13 13:38:24,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-12-13 13:38:24,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-12-13 13:38:24,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-12-13 13:38:24,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-12-13 13:38:24,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-12-13 13:38:24,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-12-13 13:38:24,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-12-13 13:38:24,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-12-13 13:38:24,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 17 remaining) [2022-12-13 13:38:24,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-12-13 13:38:24,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-12-13 13:38:24,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-12-13 13:38:24,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-12-13 13:38:24,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-12-13 13:38:24,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:38:24,110 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 13:38:24,112 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 13:38:24,112 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 13:38:24,135 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 13:38:24,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 188 transitions, 400 flow [2022-12-13 13:38:24,168 INFO L130 PetriNetUnfolder]: 10/208 cut-off events. [2022-12-13 13:38:24,168 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:38:24,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 208 events. 10/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 217. Up to 6 conditions per place. [2022-12-13 13:38:24,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 188 transitions, 400 flow [2022-12-13 13:38:24,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 169 transitions, 353 flow [2022-12-13 13:38:24,172 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:38:24,172 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 169 transitions, 353 flow [2022-12-13 13:38:24,173 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 169 transitions, 353 flow [2022-12-13 13:38:24,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 169 transitions, 353 flow [2022-12-13 13:38:24,198 INFO L130 PetriNetUnfolder]: 10/208 cut-off events. [2022-12-13 13:38:24,199 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:38:24,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 208 events. 10/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 360 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 157. Up to 6 conditions per place. [2022-12-13 13:38:24,208 INFO L119 LiptonReduction]: Number of co-enabled transitions 7896 [2022-12-13 13:38:27,230 INFO L134 LiptonReduction]: Checked pairs total: 33316 [2022-12-13 13:38:27,231 INFO L136 LiptonReduction]: Total number of compositions: 160 [2022-12-13 13:38:27,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:38:27,234 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;@5411be06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:38:27,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 13:38:27,235 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:38:27,235 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:38:27,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:27,235 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 13:38:27,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 13:38:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 917, now seen corresponding path program 1 times [2022-12-13 13:38:27,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:27,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133847078] [2022-12-13 13:38:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:27,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:38:27,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:27,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133847078] [2022-12-13 13:38:27,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133847078] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:27,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:27,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 13:38:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508488271] [2022-12-13 13:38:27,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:27,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:38:27,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:27,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:38:27,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:38:27,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 348 [2022-12-13 13:38:27,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 125 flow. Second operand has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 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) [2022-12-13 13:38:27,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:38:27,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 348 [2022-12-13 13:38:27,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:38:27,592 INFO L130 PetriNetUnfolder]: 1889/3829 cut-off events. [2022-12-13 13:38:27,592 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-12-13 13:38:27,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 3829 events. 1889/3829 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 29610 event pairs, 1665 based on Foata normal form. 399/3741 useless extension candidates. Maximal degree in co-relation 6647. Up to 2691 conditions per place. [2022-12-13 13:38:27,628 INFO L137 encePairwiseOnDemand]: 342/348 looper letters, 24 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2022-12-13 13:38:27,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 161 flow [2022-12-13 13:38:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:38:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:38:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 382 transitions. [2022-12-13 13:38:27,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2022-12-13 13:38:27,630 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 382 transitions. [2022-12-13 13:38:27,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 382 transitions. [2022-12-13 13:38:27,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:38:27,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 382 transitions. [2022-12-13 13:38:27,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 191.0) internal successors, (382), 2 states have internal predecessors, (382), 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) [2022-12-13 13:38:27,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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) [2022-12-13 13:38:27,637 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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) [2022-12-13 13:38:27,637 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 125 flow. Second operand 2 states and 382 transitions. [2022-12-13 13:38:27,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 161 flow [2022-12-13 13:38:27,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 158 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 13:38:27,640 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 110 flow [2022-12-13 13:38:27,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2022-12-13 13:38:27,641 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2022-12-13 13:38:27,641 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 110 flow [2022-12-13 13:38:27,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 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) [2022-12-13 13:38:27,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:27,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 13:38:27,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:38:27,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 13:38:27,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:27,642 INFO L85 PathProgramCache]: Analyzing trace with hash 28191958, now seen corresponding path program 1 times [2022-12-13 13:38:27,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:27,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254123980] [2022-12-13 13:38:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:27,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:38:27,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:27,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254123980] [2022-12-13 13:38:27,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254123980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:27,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:27,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:38:27,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243056801] [2022-12-13 13:38:27,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:27,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:38:27,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:27,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:38:27,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:38:27,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 348 [2022-12-13 13:38:27,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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) [2022-12-13 13:38:27,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:38:27,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 348 [2022-12-13 13:38:27,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:38:28,637 INFO L130 PetriNetUnfolder]: 7541/12559 cut-off events. [2022-12-13 13:38:28,637 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2022-12-13 13:38:28,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23580 conditions, 12559 events. 7541/12559 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 97687 event pairs, 2891 based on Foata normal form. 0/10945 useless extension candidates. Maximal degree in co-relation 23575. Up to 6854 conditions per place. [2022-12-13 13:38:28,717 INFO L137 encePairwiseOnDemand]: 337/348 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2022-12-13 13:38:28,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 296 flow [2022-12-13 13:38:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:38:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:38:28,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2022-12-13 13:38:28,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5239463601532567 [2022-12-13 13:38:28,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2022-12-13 13:38:28,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2022-12-13 13:38:28,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:38:28,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2022-12-13 13:38:28,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 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) [2022-12-13 13:38:28,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 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) [2022-12-13 13:38:28,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 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) [2022-12-13 13:38:28,726 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 110 flow. Second operand 3 states and 547 transitions. [2022-12-13 13:38:28,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 296 flow [2022-12-13 13:38:28,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:38:28,728 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 180 flow [2022-12-13 13:38:28,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2022-12-13 13:38:28,729 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-12-13 13:38:28,730 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 180 flow [2022-12-13 13:38:28,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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) [2022-12-13 13:38:28,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:28,730 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:38:28,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:38:28,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 13:38:28,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash 874019813, now seen corresponding path program 1 times [2022-12-13 13:38:28,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:28,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908302625] [2022-12-13 13:38:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:28,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:38:28,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:28,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908302625] [2022-12-13 13:38:28,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908302625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:28,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:28,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:38:28,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241558644] [2022-12-13 13:38:28,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:28,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:38:28,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:28,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:38:28,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:38:28,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 348 [2022-12-13 13:38:28,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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) [2022-12-13 13:38:28,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:38:28,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 348 [2022-12-13 13:38:28,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:38:29,845 INFO L130 PetriNetUnfolder]: 11073/17641 cut-off events. [2022-12-13 13:38:29,845 INFO L131 PetriNetUnfolder]: For 2907/2907 co-relation queries the response was YES. [2022-12-13 13:38:29,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37406 conditions, 17641 events. 11073/17641 cut-off events. For 2907/2907 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 124833 event pairs, 9113 based on Foata normal form. 0/15403 useless extension candidates. Maximal degree in co-relation 37399. Up to 15129 conditions per place. [2022-12-13 13:38:29,928 INFO L137 encePairwiseOnDemand]: 343/348 looper letters, 31 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2022-12-13 13:38:29,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 236 flow [2022-12-13 13:38:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:38:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:38:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-12-13 13:38:29,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47509578544061304 [2022-12-13 13:38:29,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-12-13 13:38:29,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-12-13 13:38:29,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:38:29,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-12-13 13:38:29,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2022-12-13 13:38:29,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 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) [2022-12-13 13:38:29,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 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) [2022-12-13 13:38:29,933 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 180 flow. Second operand 3 states and 496 transitions. [2022-12-13 13:38:29,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 236 flow [2022-12-13 13:38:29,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:38:29,951 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 158 flow [2022-12-13 13:38:29,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2022-12-13 13:38:29,952 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2022-12-13 13:38:29,952 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 158 flow [2022-12-13 13:38:29,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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) [2022-12-13 13:38:29,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:29,952 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:38:29,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:38:29,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 13:38:29,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash 26543499, now seen corresponding path program 1 times [2022-12-13 13:38:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:29,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787112113] [2022-12-13 13:38:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:38:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:29,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787112113] [2022-12-13 13:38:29,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787112113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:29,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:29,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:38:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466674510] [2022-12-13 13:38:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:38:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:38:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:38:30,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 348 [2022-12-13 13:38:30,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 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) [2022-12-13 13:38:30,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:38:30,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 348 [2022-12-13 13:38:30,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:38:30,782 INFO L130 PetriNetUnfolder]: 6853/11499 cut-off events. [2022-12-13 13:38:30,782 INFO L131 PetriNetUnfolder]: For 1139/1139 co-relation queries the response was YES. [2022-12-13 13:38:30,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23784 conditions, 11499 events. 6853/11499 cut-off events. For 1139/1139 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 88992 event pairs, 4540 based on Foata normal form. 0/9928 useless extension candidates. Maximal degree in co-relation 23777. Up to 8730 conditions per place. [2022-12-13 13:38:30,818 INFO L137 encePairwiseOnDemand]: 342/348 looper letters, 43 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2022-12-13 13:38:30,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 317 flow [2022-12-13 13:38:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:38:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:38:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2022-12-13 13:38:30,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2022-12-13 13:38:30,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2022-12-13 13:38:30,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2022-12-13 13:38:30,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:38:30,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2022-12-13 13:38:30,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2022-12-13 13:38:30,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 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) [2022-12-13 13:38:30,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 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) [2022-12-13 13:38:30,823 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 158 flow. Second operand 3 states and 540 transitions. [2022-12-13 13:38:30,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 317 flow [2022-12-13 13:38:30,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:38:30,824 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 226 flow [2022-12-13 13:38:30,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2022-12-13 13:38:30,825 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-12-13 13:38:30,825 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 226 flow [2022-12-13 13:38:30,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 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) [2022-12-13 13:38:30,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:30,825 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:38:30,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:38:30,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 13:38:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:30,825 INFO L85 PathProgramCache]: Analyzing trace with hash -85973581, now seen corresponding path program 1 times [2022-12-13 13:38:30,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:30,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762158720] [2022-12-13 13:38:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:30,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:38:30,842 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:38:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:38:30,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:38:30,858 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:38:30,858 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2022-12-13 13:38:30,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-13 13:38:30,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-13 13:38:30,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-13 13:38:30,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-13 13:38:30,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-13 13:38:30,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-13 13:38:30,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-13 13:38:30,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-13 13:38:30,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:38:30,860 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 13:38:30,863 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-12-13 13:38:30,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:38:30,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:38:30 BasicIcfg [2022-12-13 13:38:30,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:38:30,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:38:30,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:38:30,894 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:38:30,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:38:19" (3/4) ... [2022-12-13 13:38:30,896 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:38:30,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:38:30,897 INFO L158 Benchmark]: Toolchain (without parser) took 11980.56ms. Allocated memory was 161.5MB in the beginning and 838.9MB in the end (delta: 677.4MB). Free memory was 121.0MB in the beginning and 493.1MB in the end (delta: -372.1MB). Peak memory consumption was 306.7MB. Max. memory is 16.1GB. [2022-12-13 13:38:30,897 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 111.1MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:38:30,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.86ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 100.9MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 13:38:30,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.20ms. Allocated memory is still 161.5MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:38:30,898 INFO L158 Benchmark]: Boogie Preprocessor took 29.98ms. Allocated memory is still 161.5MB. Free memory was 98.8MB in the beginning and 97.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:38:30,898 INFO L158 Benchmark]: RCFGBuilder took 365.70ms. Allocated memory is still 161.5MB. Free memory was 97.1MB in the beginning and 125.2MB in the end (delta: -28.0MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-12-13 13:38:30,898 INFO L158 Benchmark]: TraceAbstraction took 11099.80ms. Allocated memory was 161.5MB in the beginning and 838.9MB in the end (delta: 677.4MB). Free memory was 125.2MB in the beginning and 493.1MB in the end (delta: -368.0MB). Peak memory consumption was 309.2MB. Max. memory is 16.1GB. [2022-12-13 13:38:30,899 INFO L158 Benchmark]: Witness Printer took 2.84ms. Allocated memory is still 838.9MB. Free memory is still 493.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:38:30,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 111.1MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.86ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 100.9MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.20ms. Allocated memory is still 161.5MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.98ms. Allocated memory is still 161.5MB. Free memory was 98.8MB in the beginning and 97.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 365.70ms. Allocated memory is still 161.5MB. Free memory was 97.1MB in the beginning and 125.2MB in the end (delta: -28.0MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 11099.80ms. Allocated memory was 161.5MB in the beginning and 838.9MB in the end (delta: 677.4MB). Free memory was 125.2MB in the beginning and 493.1MB in the end (delta: -368.0MB). Peak memory consumption was 309.2MB. Max. memory is 16.1GB. * Witness Printer took 2.84ms. Allocated memory is still 838.9MB. Free memory is still 493.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 137 PlacesBefore, 37 PlacesAfterwards, 137 TransitionsBefore, 34 TransitionsAfterwards, 3398 CoEnabledTransitionPairs, 7 FixpointIterations, 66 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 140 TotalNumberOfCompositions, 9975 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5008, independent: 4705, independent conditional: 0, independent unconditional: 4705, dependent: 303, dependent conditional: 0, dependent unconditional: 303, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2081, independent: 2030, independent conditional: 0, independent unconditional: 2030, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5008, independent: 2675, independent conditional: 0, independent unconditional: 2675, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 2081, unknown conditional: 0, unknown unconditional: 2081] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 169 PlacesBefore, 59 PlacesAfterwards, 169 TransitionsBefore, 55 TransitionsAfterwards, 7896 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 20 ConcurrentYvCompositions, 4 ChoiceCompositions, 160 TotalNumberOfCompositions, 33316 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12868, independent: 12219, independent conditional: 0, independent unconditional: 12219, dependent: 649, dependent conditional: 0, dependent unconditional: 649, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4544, independent: 4471, independent conditional: 0, independent unconditional: 4471, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12868, independent: 7748, independent conditional: 0, independent unconditional: 7748, dependent: 576, dependent conditional: 0, dependent unconditional: 576, unknown: 4544, unknown conditional: 0, unknown unconditional: 4544] , Statistics on independence cache: Total cache size (in pairs): 450, Positive cache size: 412, Positive conditional cache size: 0, Positive unconditional cache size: 412, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 694]: Data race detected Data race detected The following path leads to a data race: [L690] 0 volatile int x; [L691] 0 volatile int n; [L692] 0 pthread_mutex_t mut = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L708] 0 pthread_t t1, t2; [L709] 0 x = 0 [L710] 0 n = __VERIFIER_nondet_uint() [L711] EXPR 0 n >= (10/2) [L711] EXPR 0 n >= (10/2) && n <= 10 [L711] EXPR 0 n <= 10 [L711] EXPR 0 n >= (10/2) && n <= 10 [L711] CALL 0 assume_abort_if_not(n >= (10/2) && n <= 10) [L687] COND FALSE 0 !(!cond) [L711] RET 0 assume_abort_if_not(n >= (10/2) && n <= 10) [L712] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, mut={3:0}, n=5, pthread_create(&t1, 0, thr1, 0)=10, t1={6:0}, t2={7:0}, x=0] [L713] 0 int i = 0; VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, i=0, mut={3:0}, n=5, t1={6:0}, t2={7:0}, x=0] [L713] 0 i < n [L713] COND TRUE 0 i < n [L694] 1 x < n VAL [arg={0:0}, arg={0:0}, mut={3:0}, n=5, x=0] [L714] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, i=0, mut={3:0}, n=5, pthread_create(&t2, 0, thr2, 0)=11, t1={6:0}, t2={7:0}, x=0] [L697] 2 int t; [L698] 2 int k = __VERIFIER_nondet_uint(); [L699] CALL 2 assume_abort_if_not(k >= (10/2) && k <= 10) [L687] COND FALSE 2 !(!cond) [L699] RET 2 assume_abort_if_not(k >= (10/2) && k <= 10) [L701] 2 t = x VAL [arg={0:0}, arg={0:0}, k=5, mut={3:0}, n=5, t=0, x=0] [L702] 2 k == n [L702] COND TRUE 2 k == n VAL [arg={0:0}, arg={0:0}, k=5, mut={3:0}, n=5, t=0, x=0] [L703] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, k=5, mut={3:0}, n=5, t=0, x=1, x = t + 1=52] [L694] 1 x < n VAL [arg={0:0}, arg={0:0}, mut={3:0}, n=5, x=1] Now there is a data race on ~x~0 between C: x = t + 1 [703] and C: x < n [694] - UnprovableResult [Line: 701]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 181 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 8 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 228 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 251 IncrementalHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 27 mSDtfsCounter, 251 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=4, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 13:38:30,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e1298c0-76a7-4a0e-9914-67f03dcbd2bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE