./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/gcd-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/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_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/gcd-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/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_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/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 abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 --- 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 12:13:35,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:13:35,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:13:35,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:13:35,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:13:35,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:13:35,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:13:35,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:13:35,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:13:35,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:13:35,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:13:35,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:13:35,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:13:35,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:13:35,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:13:35,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:13:35,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:13:35,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:13:35,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:13:35,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:13:35,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:13:35,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:13:35,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:13:35,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:13:35,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:13:35,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:13:35,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:13:35,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:13:35,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:13:35,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:13:35,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:13:35,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:13:35,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:13:35,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:13:35,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:13:35,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:13:35,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:13:35,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:13:35,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:13:35,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:13:35,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:13:35,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 12:13:35,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:13:35,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:13:35,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:13:35,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:13:35,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:13:35,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:13:35,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:13:35,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:13:35,741 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:13:35,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:13:35,741 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:13:35,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:13:35,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:13:35,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:13:35,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:13:35,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:13:35,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:13:35,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:13:35,742 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 12:13:35,742 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:13:35,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:13:35,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:13:35,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:13:35,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:13:35,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:13:35,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:13:35,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:13:35,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:13:35,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:13:35,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:13:35,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:13:35,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:13:35,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:13:35,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:13:35,744 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:13:35,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:13:35,744 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:13:35,744 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_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 [2022-12-13 12:13:35,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:13:35,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:13:35,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:13:35,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:13:35,929 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:13:35,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-atomic/gcd-2.i [2022-12-13 12:13:38,472 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:13:38,649 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:13:38,649 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/sv-benchmarks/c/pthread-atomic/gcd-2.i [2022-12-13 12:13:38,657 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/data/7a1d34aba/bf7b9d9b36014ee49df2b39d1ae53c42/FLAGb8b1ec658 [2022-12-13 12:13:38,667 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/data/7a1d34aba/bf7b9d9b36014ee49df2b39d1ae53c42 [2022-12-13 12:13:38,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:13:38,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:13:38,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:13:38,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:13:38,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:13:38,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:38,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de4dd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38, skipping insertion in model container [2022-12-13 12:13:38,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:38,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:13:38,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:13:38,812 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_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2022-12-13 12:13:38,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:13:38,922 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:13:38,931 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_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2022-12-13 12:13:38,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:13:38,971 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:13:38,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38 WrapperNode [2022-12-13 12:13:38,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:13:38,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:13:38,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:13:38,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:13:38,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:38,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,006 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 182 [2022-12-13 12:13:39,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:13:39,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:13:39,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:13:39,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:13:39,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,025 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:13:39,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:13:39,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:13:39,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:13:39,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (1/1) ... [2022-12-13 12:13:39,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:13:39,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:39,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:13:39,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:13:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:13:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:13:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:13:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:13:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:13:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2022-12-13 12:13:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2022-12-13 12:13:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2022-12-13 12:13:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2022-12-13 12:13:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:13:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:13:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:13:39,081 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 12:13:39,181 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:13:39,183 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:13:39,450 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:13:39,516 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:13:39,516 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 12:13:39,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:13:39 BoogieIcfgContainer [2022-12-13 12:13:39,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:13:39,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:13:39,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:13:39,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:13:39,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:13:38" (1/3) ... [2022-12-13 12:13:39,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aee5894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:13:39, skipping insertion in model container [2022-12-13 12:13:39,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:38" (2/3) ... [2022-12-13 12:13:39,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aee5894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:13:39, skipping insertion in model container [2022-12-13 12:13:39,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:13:39" (3/3) ... [2022-12-13 12:13:39,527 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2022-12-13 12:13:39,534 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:13:39,541 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:13:39,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-12-13 12:13:39,541 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:13:39,597 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:13:39,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 205 transitions, 426 flow [2022-12-13 12:13:39,675 INFO L130 PetriNetUnfolder]: 12/203 cut-off events. [2022-12-13 12:13:39,675 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:13:39,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 12/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-12-13 12:13:39,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 205 transitions, 426 flow [2022-12-13 12:13:39,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 130 transitions, 272 flow [2022-12-13 12:13:39,686 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:13:39,694 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 130 transitions, 272 flow [2022-12-13 12:13:39,696 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 130 transitions, 272 flow [2022-12-13 12:13:39,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 130 transitions, 272 flow [2022-12-13 12:13:39,717 INFO L130 PetriNetUnfolder]: 6/130 cut-off events. [2022-12-13 12:13:39,717 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:13:39,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 130 events. 6/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 116 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-12-13 12:13:39,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 1836 [2022-12-13 12:13:42,379 INFO L134 LiptonReduction]: Checked pairs total: 12270 [2022-12-13 12:13:42,379 INFO L136 LiptonReduction]: Total number of compositions: 105 [2022-12-13 12:13:42,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:13:42,394 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;@345c1b02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:13:42,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-12-13 12:13:42,396 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 12:13:42,396 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:13:42,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:42,396 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:13:42,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-13 12:13:42,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:42,401 INFO L85 PathProgramCache]: Analyzing trace with hash 744, now seen corresponding path program 1 times [2022-12-13 12:13:42,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:42,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821208387] [2022-12-13 12:13:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:42,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,489 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 12:13:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:42,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821208387] [2022-12-13 12:13:42,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821208387] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:42,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:42,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:13:42,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505936360] [2022-12-13 12:13:42,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:42,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:13:42,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:42,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:13:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:13:42,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 310 [2022-12-13 12:13:42,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 102 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 12:13:42,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:42,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 310 [2022-12-13 12:13:42,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:42,560 INFO L130 PetriNetUnfolder]: 44/132 cut-off events. [2022-12-13 12:13:42,560 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 12:13:42,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 132 events. 44/132 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 480 event pairs, 18 based on Foata normal form. 27/119 useless extension candidates. Maximal degree in co-relation 176. Up to 73 conditions per place. [2022-12-13 12:13:42,562 INFO L137 encePairwiseOnDemand]: 293/310 looper letters, 11 selfloop transitions, 0 changer transitions 1/28 dead transitions. [2022-12-13 12:13:42,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 92 flow [2022-12-13 12:13:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:13:42,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:13:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 381 transitions. [2022-12-13 12:13:42,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.614516129032258 [2022-12-13 12:13:42,572 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 381 transitions. [2022-12-13 12:13:42,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 381 transitions. [2022-12-13 12:13:42,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:42,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 381 transitions. [2022-12-13 12:13:42,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 190.5) internal successors, (381), 2 states have internal predecessors, (381), 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 12:13:42,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 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 12:13:42,581 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 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 12:13:42,583 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 102 flow. Second operand 2 states and 381 transitions. [2022-12-13 12:13:42,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 92 flow [2022-12-13 12:13:42,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:13:42,586 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 57 flow [2022-12-13 12:13:42,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=57, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2022-12-13 12:13:42,590 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -18 predicate places. [2022-12-13 12:13:42,590 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 57 flow [2022-12-13 12:13:42,590 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 12:13:42,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:42,590 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:13:42,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:13:42,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting dec_aErr0ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-13 12:13:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:42,591 INFO L85 PathProgramCache]: Analyzing trace with hash 706670340, now seen corresponding path program 1 times [2022-12-13 12:13:42,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:42,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354510051] [2022-12-13 12:13:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:42,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,672 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 12:13:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354510051] [2022-12-13 12:13:42,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354510051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:42,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:42,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:13:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614797829] [2022-12-13 12:13:42,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:42,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:42,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:42,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 310 [2022-12-13 12:13:42,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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 12:13:42,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:42,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 310 [2022-12-13 12:13:42,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:42,744 INFO L130 PetriNetUnfolder]: 96/225 cut-off events. [2022-12-13 12:13:42,744 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 12:13:42,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 225 events. 96/225 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 969 event pairs, 32 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 398. Up to 162 conditions per place. [2022-12-13 12:13:42,746 INFO L137 encePairwiseOnDemand]: 306/310 looper letters, 18 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2022-12-13 12:13:42,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 104 flow [2022-12-13 12:13:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-12-13 12:13:42,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2022-12-13 12:13:42,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-12-13 12:13:42,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-12-13 12:13:42,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:42,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-12-13 12:13:42,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 12:13:42,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 12:13:42,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 12:13:42,756 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 57 flow. Second operand 3 states and 520 transitions. [2022-12-13 12:13:42,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 104 flow [2022-12-13 12:13:42,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:13:42,757 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 67 flow [2022-12-13 12:13:42,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2022-12-13 12:13:42,758 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -18 predicate places. [2022-12-13 12:13:42,758 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 67 flow [2022-12-13 12:13:42,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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 12:13:42,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:42,759 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:13:42,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-13 12:13:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 505383303, now seen corresponding path program 1 times [2022-12-13 12:13:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:42,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329832749] [2022-12-13 12:13:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,818 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 12:13:42,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:42,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329832749] [2022-12-13 12:13:42,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329832749] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:42,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:42,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:13:42,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332608052] [2022-12-13 12:13:42,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:42,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:42,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:42,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:42,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:42,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 310 [2022-12-13 12:13:42,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:13:42,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:42,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 310 [2022-12-13 12:13:42,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:42,885 INFO L130 PetriNetUnfolder]: 112/267 cut-off events. [2022-12-13 12:13:42,885 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:13:42,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 267 events. 112/267 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1144 event pairs, 33 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 501. Up to 165 conditions per place. [2022-12-13 12:13:42,887 INFO L137 encePairwiseOnDemand]: 303/310 looper letters, 18 selfloop transitions, 5 changer transitions 3/36 dead transitions. [2022-12-13 12:13:42,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 139 flow [2022-12-13 12:13:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2022-12-13 12:13:42,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2022-12-13 12:13:42,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2022-12-13 12:13:42,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2022-12-13 12:13:42,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:42,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2022-12-13 12:13:42,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:13:42,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 12:13:42,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 12:13:42,892 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 67 flow. Second operand 3 states and 535 transitions. [2022-12-13 12:13:42,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 139 flow [2022-12-13 12:13:42,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 139 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:13:42,893 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 103 flow [2022-12-13 12:13:42,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2022-12-13 12:13:42,893 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -15 predicate places. [2022-12-13 12:13:42,894 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 103 flow [2022-12-13 12:13:42,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:13:42,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:42,894 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:42,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:13:42,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-13 12:13:42,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:42,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1639355920, now seen corresponding path program 1 times [2022-12-13 12:13:42,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:42,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275399686] [2022-12-13 12:13:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:42,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:13:42,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:13:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:13:42,965 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:13:42,965 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:13:42,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (34 of 35 remaining) [2022-12-13 12:13:42,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (33 of 35 remaining) [2022-12-13 12:13:42,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (32 of 35 remaining) [2022-12-13 12:13:42,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (31 of 35 remaining) [2022-12-13 12:13:42,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (30 of 35 remaining) [2022-12-13 12:13:42,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (29 of 35 remaining) [2022-12-13 12:13:42,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (28 of 35 remaining) [2022-12-13 12:13:42,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (27 of 35 remaining) [2022-12-13 12:13:42,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (26 of 35 remaining) [2022-12-13 12:13:42,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (25 of 35 remaining) [2022-12-13 12:13:42,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (24 of 35 remaining) [2022-12-13 12:13:42,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (23 of 35 remaining) [2022-12-13 12:13:42,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (22 of 35 remaining) [2022-12-13 12:13:42,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (21 of 35 remaining) [2022-12-13 12:13:42,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (20 of 35 remaining) [2022-12-13 12:13:42,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (19 of 35 remaining) [2022-12-13 12:13:42,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 35 remaining) [2022-12-13 12:13:42,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 35 remaining) [2022-12-13 12:13:42,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 35 remaining) [2022-12-13 12:13:42,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 35 remaining) [2022-12-13 12:13:42,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 35 remaining) [2022-12-13 12:13:42,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 35 remaining) [2022-12-13 12:13:42,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (12 of 35 remaining) [2022-12-13 12:13:42,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (11 of 35 remaining) [2022-12-13 12:13:42,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (10 of 35 remaining) [2022-12-13 12:13:42,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (9 of 35 remaining) [2022-12-13 12:13:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (8 of 35 remaining) [2022-12-13 12:13:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (7 of 35 remaining) [2022-12-13 12:13:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (6 of 35 remaining) [2022-12-13 12:13:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (5 of 35 remaining) [2022-12-13 12:13:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (4 of 35 remaining) [2022-12-13 12:13:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (3 of 35 remaining) [2022-12-13 12:13:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (2 of 35 remaining) [2022-12-13 12:13:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (1 of 35 remaining) [2022-12-13 12:13:42,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (0 of 35 remaining) [2022-12-13 12:13:42,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:13:42,972 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 12:13:42,977 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 12:13:42,977 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:13:42,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:13:42 BasicIcfg [2022-12-13 12:13:42,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:13:43,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:13:43,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:13:43,000 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:13:43,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:13:39" (3/4) ... [2022-12-13 12:13:43,003 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 12:13:43,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:13:43,003 INFO L158 Benchmark]: Toolchain (without parser) took 4332.87ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 103.2MB in the beginning and 100.0MB in the end (delta: 3.2MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2022-12-13 12:13:43,004 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:13:43,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.72ms. Allocated memory is still 136.3MB. Free memory was 103.2MB in the beginning and 82.9MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 12:13:43,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.52ms. Allocated memory is still 136.3MB. Free memory was 82.9MB in the beginning and 79.6MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:13:43,005 INFO L158 Benchmark]: Boogie Preprocessor took 21.13ms. Allocated memory is still 136.3MB. Free memory was 79.6MB in the beginning and 78.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:13:43,005 INFO L158 Benchmark]: RCFGBuilder took 490.08ms. Allocated memory is still 136.3MB. Free memory was 78.1MB in the beginning and 50.3MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 12:13:43,005 INFO L158 Benchmark]: TraceAbstraction took 3478.08ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 49.9MB in the beginning and 100.0MB in the end (delta: -50.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:13:43,005 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 163.6MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:13:43,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.72ms. Allocated memory is still 136.3MB. Free memory was 103.2MB in the beginning and 82.9MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.52ms. Allocated memory is still 136.3MB. Free memory was 82.9MB in the beginning and 79.6MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.13ms. Allocated memory is still 136.3MB. Free memory was 79.6MB in the beginning and 78.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 490.08ms. Allocated memory is still 136.3MB. Free memory was 78.1MB in the beginning and 50.3MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3478.08ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 49.9MB in the beginning and 100.0MB in the end (delta: -50.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 163.6MB. Free memory is still 100.0MB. 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: 2.7s, 131 PlacesBefore, 48 PlacesAfterwards, 130 TransitionsBefore, 45 TransitionsAfterwards, 1836 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 105 TotalNumberOfCompositions, 12270 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4209, independent: 3741, independent conditional: 0, independent unconditional: 3741, dependent: 468, dependent conditional: 0, dependent unconditional: 468, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 822, independent: 792, independent conditional: 0, independent unconditional: 792, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4209, independent: 2949, independent conditional: 0, independent unconditional: 2949, dependent: 438, dependent conditional: 0, dependent unconditional: 438, unknown: 822, unknown conditional: 0, unknown unconditional: 822] , Statistics on independence cache: Total cache size (in pairs): 185, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 709]: Data race detected Data race detected The following path leads to a data race: [L695] 0 unsigned a, b; [L747] 0 unsigned a_in=__VERIFIER_nondet_uint(); [L748] 0 unsigned b_in=__VERIFIER_nondet_uint(); [L749] CALL 0 assume_abort_if_not(a_in>0) [L15] COND FALSE 0 !(!cond) [L749] RET 0 assume_abort_if_not(a_in>0) [L750] CALL 0 assume_abort_if_not(b_in>0) [L15] COND FALSE 0 !(!cond) [L750] RET 0 assume_abort_if_not(b_in>0) [L751] CALL 0 start(a_in, b_in) [L726] 0 a=a_in [L727] 0 b=b_in [L728] 0 pthread_t t1, t2; [L729] FCALL, FORK 0 pthread_create(&t1, 0, dec_a, 0) VAL [\old(a_in)=4294967284, \old(b_in)=4294967295, a=-4294967308, a_in=4294967284, b=-4294967297, b_in=4294967295, pthread_create(&t1, 0, dec_a, 0)=-1, t1={10:0}, t2={9:0}] [L730] FCALL, FORK 0 pthread_create(&t2, 0, dec_b, 0) VAL [\old(a_in)=4294967284, \old(b_in)=4294967295, a=-4294967308, a_in=4294967284, b=-4294967297, b_in=4294967295, pthread_create(&t2, 0, dec_b, 0)=0, t1={10:0}, t2={9:0}] [L709] 1 a!=b VAL [a=-4294967308, arg={0:0}, arg={0:0}, b=-4294967297] [L718] 2 a!=b VAL [a=-4294967308, arg={0:0}, arg={0:0}, b=-4294967297] [L718] COND TRUE 2 a!=b VAL [a=-4294967308, arg={0:0}, arg={0:0}, b=-4294967297] [L720] CALL 2 __VERIFIER_atomic_dec_b() [L703] 2 b>a [L703] COND TRUE 2 b>a [L704] EXPR 2 b-a [L704] 2 b=b-a [L720] RET 2 __VERIFIER_atomic_dec_b() [L709] 1 a!=b VAL [a=-4294967308, arg={0:0}, arg={0:0}, b=11] Now there is a data race on ~b~0 between C: b=b-a [704] and C: a!=b [709] - 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: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 730]: 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: 729]: 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, 230 locations, 35 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: 3.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 7 mSDtfsCounter, 72 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=103occurred in iteration=3, 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-13 12:13:43,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64aa9f46-2a5f-4b5b-b35d-8e4f4ca8f787/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