./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 4fc63b2a 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_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/gcd-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:28:29,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:28:29,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DataRace-32bit-Taipan_Default.epf [2024-11-02 12:28:29,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:28:29,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:28:29,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:28:29,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:28:29,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:28:29,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:28:29,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:28:29,891 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:28:29,891 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:28:29,895 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:28:29,895 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:28:29,896 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:28:29,896 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:28:29,896 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:28:29,897 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:28:29,897 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:28:29,898 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:28:29,898 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:28:29,903 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:28:29,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:28:29,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:28:29,904 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:28:29,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:28:29,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:28:29,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:28:29,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:28:29,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:28:29,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:28:29,910 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-02 12:28:29,910 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:28:29,910 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:28:29,911 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:28:29,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:28:29,911 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:28:29,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:28:29,912 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:28:29,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:28:29,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:28:29,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:28:29,914 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:28:29,914 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:28:29,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:28:29,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:28:29,915 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:28:29,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:28:29,915 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 [2024-11-02 12:28:30,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:28:30,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:28:30,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:28:30,222 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:28:30,223 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:28:30,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-atomic/gcd-2.i Unable to find full path for "g++" [2024-11-02 12:28:32,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:28:32,613 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:28:32,613 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/sv-benchmarks/c/pthread-atomic/gcd-2.i [2024-11-02 12:28:32,631 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/data/ac0cc2e1a/c59c025898cf4aa394de3f74dbe447cb/FLAGbba22a5ff [2024-11-02 12:28:32,946 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/data/ac0cc2e1a/c59c025898cf4aa394de3f74dbe447cb [2024-11-02 12:28:32,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:28:32,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:28:32,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:28:32,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:28:32,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:28:32,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:32" (1/1) ... [2024-11-02 12:28:32,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d35dae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32, skipping insertion in model container [2024-11-02 12:28:32,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:32" (1/1) ... [2024-11-02 12:28:33,073 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:28:33,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:28:33,660 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:28:33,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:28:33,767 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:28:33,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33 WrapperNode [2024-11-02 12:28:33,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:28:33,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:28:33,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:28:33,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:28:33,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,832 INFO L138 Inliner]: procedures = 173, calls = 29, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 166 [2024-11-02 12:28:33,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:28:33,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:28:33,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:28:33,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:28:33,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:28:33,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:28:33,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:28:33,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:28:33,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (1/1) ... [2024-11-02 12:28:33,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:28:33,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:33,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:28:33,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:28:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:28:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2024-11-02 12:28:33,970 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2024-11-02 12:28:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2024-11-02 12:28:33,971 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2024-11-02 12:28:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:28:33,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:28:33,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:28:33,975 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:28:34,196 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:28:34,199 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:28:34,885 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:28:34,885 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:28:35,017 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:28:35,017 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:28:35,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:28:35 BoogieIcfgContainer [2024-11-02 12:28:35,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:28:35,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:28:35,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:28:35,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:28:35,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:28:32" (1/3) ... [2024-11-02 12:28:35,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1317a86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:28:35, skipping insertion in model container [2024-11-02 12:28:35,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:33" (2/3) ... [2024-11-02 12:28:35,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1317a86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:28:35, skipping insertion in model container [2024-11-02 12:28:35,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:28:35" (3/3) ... [2024-11-02 12:28:35,034 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2024-11-02 12:28:35,056 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:28:35,056 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-02 12:28:35,056 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:28:35,157 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-02 12:28:35,208 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 188 places, 196 transitions, 406 flow [2024-11-02 12:28:35,320 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1050 states, 984 states have (on average 2.769308943089431) internal successors, (2725), 1049 states have internal predecessors, (2725), 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) [2024-11-02 12:28:35,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:28:35,360 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@a2542b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:28:35,360 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-02 12:28:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 1050 states, 984 states have (on average 2.769308943089431) internal successors, (2725), 1049 states have internal predecessors, (2725), 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) [2024-11-02 12:28:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-02 12:28:35,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:35,376 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:35,377 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-11-02 12:28:35,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:35,384 INFO L85 PathProgramCache]: Analyzing trace with hash -919858630, now seen corresponding path program 1 times [2024-11-02 12:28:35,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:35,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494977351] [2024-11-02 12:28:35,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:35,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:35,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:35,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494977351] [2024-11-02 12:28:35,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494977351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:35,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:35,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:35,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929633839] [2024-11-02 12:28:35,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:35,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:35,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:35,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:35,803 INFO L87 Difference]: Start difference. First operand has 1050 states, 984 states have (on average 2.769308943089431) internal successors, (2725), 1049 states have internal predecessors, (2725), 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) Second operand has 3 states, 2 states have (on average 22.5) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-02 12:28:35,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:35,979 INFO L93 Difference]: Finished difference Result 1600 states and 4555 transitions. [2024-11-02 12:28:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 3 states have internal predecessors, (45), 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) Word has length 45 [2024-11-02 12:28:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:36,012 INFO L225 Difference]: With dead ends: 1600 [2024-11-02 12:28:36,013 INFO L226 Difference]: Without dead ends: 577 [2024-11-02 12:28:36,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:36,029 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 1 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:36,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 166 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:36,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-02 12:28:36,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2024-11-02 12:28:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 567 states have (on average 2.435626102292769) internal successors, (1381), 576 states have internal predecessors, (1381), 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) [2024-11-02 12:28:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1381 transitions. [2024-11-02 12:28:36,155 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1381 transitions. Word has length 45 [2024-11-02 12:28:36,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:36,156 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 1381 transitions. [2024-11-02 12:28:36,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-02 12:28:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1381 transitions. [2024-11-02 12:28:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-02 12:28:36,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:36,158 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:36,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:28:36,160 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-11-02 12:28:36,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1248490859, now seen corresponding path program 1 times [2024-11-02 12:28:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:36,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376520144] [2024-11-02 12:28:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:36,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:36,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:36,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376520144] [2024-11-02 12:28:36,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376520144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:36,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:36,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:36,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932562939] [2024-11-02 12:28:36,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:36,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:36,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:36,319 INFO L87 Difference]: Start difference. First operand 577 states and 1381 transitions. Second operand has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-02 12:28:36,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:36,418 INFO L93 Difference]: Finished difference Result 577 states and 1381 transitions. [2024-11-02 12:28:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:36,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 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) Word has length 50 [2024-11-02 12:28:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:36,429 INFO L225 Difference]: With dead ends: 577 [2024-11-02 12:28:36,432 INFO L226 Difference]: Without dead ends: 576 [2024-11-02 12:28:36,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:36,435 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:36,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 162 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-02 12:28:36,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2024-11-02 12:28:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 567 states have (on average 2.433862433862434) internal successors, (1380), 575 states have internal predecessors, (1380), 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) [2024-11-02 12:28:36,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1380 transitions. [2024-11-02 12:28:36,484 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1380 transitions. Word has length 50 [2024-11-02 12:28:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:36,486 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 1380 transitions. [2024-11-02 12:28:36,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-02 12:28:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1380 transitions. [2024-11-02 12:28:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-02 12:28:36,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:36,489 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:36,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:28:36,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting dec_aErr0ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-11-02 12:28:36,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash 904826801, now seen corresponding path program 1 times [2024-11-02 12:28:36,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:36,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973456514] [2024-11-02 12:28:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:36,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:36,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973456514] [2024-11-02 12:28:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973456514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:36,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:36,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:36,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960141823] [2024-11-02 12:28:36,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:36,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:36,640 INFO L87 Difference]: Start difference. First operand 576 states and 1380 transitions. Second operand has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-02 12:28:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:36,719 INFO L93 Difference]: Finished difference Result 640 states and 1525 transitions. [2024-11-02 12:28:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:36,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 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) Word has length 60 [2024-11-02 12:28:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:36,728 INFO L225 Difference]: With dead ends: 640 [2024-11-02 12:28:36,728 INFO L226 Difference]: Without dead ends: 531 [2024-11-02 12:28:36,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:36,731 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 28 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:36,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 164 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:36,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-11-02 12:28:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 501. [2024-11-02 12:28:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 496 states have (on average 2.344758064516129) internal successors, (1163), 500 states have internal predecessors, (1163), 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) [2024-11-02 12:28:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1163 transitions. [2024-11-02 12:28:36,770 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1163 transitions. Word has length 60 [2024-11-02 12:28:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:36,772 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 1163 transitions. [2024-11-02 12:28:36,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-02 12:28:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1163 transitions. [2024-11-02 12:28:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-02 12:28:36,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:36,776 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:36,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:28:36,778 INFO L396 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 29 more)] === [2024-11-02 12:28:36,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1955180980, now seen corresponding path program 1 times [2024-11-02 12:28:36,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:36,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85055292] [2024-11-02 12:28:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:36,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:36,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85055292] [2024-11-02 12:28:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85055292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:36,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:36,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:36,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751332888] [2024-11-02 12:28:36,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:36,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:36,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:36,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:36,896 INFO L87 Difference]: Start difference. First operand 501 states and 1163 transitions. Second operand has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-02 12:28:36,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:36,959 INFO L93 Difference]: Finished difference Result 639 states and 1502 transitions. [2024-11-02 12:28:36,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:36,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 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) Word has length 62 [2024-11-02 12:28:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:36,964 INFO L225 Difference]: With dead ends: 639 [2024-11-02 12:28:36,965 INFO L226 Difference]: Without dead ends: 385 [2024-11-02 12:28:36,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:36,967 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 26 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:36,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 167 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:28:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-02 12:28:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 313. [2024-11-02 12:28:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 311 states have (on average 2.147909967845659) internal successors, (668), 312 states have internal predecessors, (668), 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) [2024-11-02 12:28:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 668 transitions. [2024-11-02 12:28:36,986 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 668 transitions. Word has length 62 [2024-11-02 12:28:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:36,987 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 668 transitions. [2024-11-02 12:28:36,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-02 12:28:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 668 transitions. [2024-11-02 12:28:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-02 12:28:36,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:36,991 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:36,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:28:36,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting dec_bErr0ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-11-02 12:28:36,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2129509987, now seen corresponding path program 1 times [2024-11-02 12:28:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427213978] [2024-11-02 12:28:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:28:37,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:28:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:28:37,157 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:28:37,157 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:28:37,158 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (32 of 33 remaining) [2024-11-02 12:28:37,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2024-11-02 12:28:37,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2024-11-02 12:28:37,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2024-11-02 12:28:37,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2024-11-02 12:28:37,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2024-11-02 12:28:37,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2024-11-02 12:28:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2024-11-02 12:28:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2024-11-02 12:28:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2024-11-02 12:28:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2024-11-02 12:28:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2024-11-02 12:28:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2024-11-02 12:28:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2024-11-02 12:28:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2024-11-02 12:28:37,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2024-11-02 12:28:37,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2024-11-02 12:28:37,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2024-11-02 12:28:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 33 remaining) [2024-11-02 12:28:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 33 remaining) [2024-11-02 12:28:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2024-11-02 12:28:37,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2024-11-02 12:28:37,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2024-11-02 12:28:37,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2024-11-02 12:28:37,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2024-11-02 12:28:37,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2024-11-02 12:28:37,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2024-11-02 12:28:37,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2024-11-02 12:28:37,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2024-11-02 12:28:37,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2024-11-02 12:28:37,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2024-11-02 12:28:37,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2024-11-02 12:28:37,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2024-11-02 12:28:37,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:28:37,182 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-02 12:28:37,253 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-02 12:28:37,254 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:28:37,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:28:37 BasicIcfg [2024-11-02 12:28:37,260 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:28:37,261 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:28:37,262 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:28:37,262 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:28:37,263 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:28:35" (3/4) ... [2024-11-02 12:28:37,264 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-02 12:28:37,340 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:28:37,340 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:28:37,344 INFO L158 Benchmark]: Toolchain (without parser) took 4385.67ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 99.2MB in the beginning and 61.3MB in the end (delta: 37.9MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2024-11-02 12:28:37,345 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory is still 44.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:28:37,345 INFO L158 Benchmark]: CACSL2BoogieTranslator took 805.95ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 76.5MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-02 12:28:37,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.66ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 74.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:28:37,346 INFO L158 Benchmark]: Boogie Preprocessor took 51.84ms. Allocated memory is still 142.6MB. Free memory was 74.1MB in the beginning and 72.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:28:37,346 INFO L158 Benchmark]: RCFGBuilder took 1131.66ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 71.8MB in the beginning and 125.5MB in the end (delta: -53.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2024-11-02 12:28:37,346 INFO L158 Benchmark]: TraceAbstraction took 2237.89ms. Allocated memory is still 174.1MB. Free memory was 124.5MB in the beginning and 67.6MB in the end (delta: 56.9MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2024-11-02 12:28:37,347 INFO L158 Benchmark]: Witness Printer took 82.33ms. Allocated memory is still 174.1MB. Free memory was 67.6MB in the beginning and 61.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-02 12:28:37,352 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory is still 44.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 805.95ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 76.5MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.66ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 74.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.84ms. Allocated memory is still 142.6MB. Free memory was 74.1MB in the beginning and 72.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1131.66ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 71.8MB in the beginning and 125.5MB in the end (delta: -53.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2237.89ms. Allocated memory is still 174.1MB. Free memory was 124.5MB in the beginning and 67.6MB in the end (delta: 56.9MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * Witness Printer took 82.33ms. Allocated memory is still 174.1MB. Free memory was 67.6MB in the beginning and 61.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 718]: Data race detected Data race detected The following path leads to a data race: [L695] 0 unsigned a, b; VAL [a=0, b=0] [L747] 0 unsigned a_in=__VERIFIER_nondet_uint(); VAL [a=0, a_in=-12884901886, b=0] [L748] 0 unsigned b_in=__VERIFIER_nondet_uint(); VAL [a=0, a_in=-12884901886, b=0, b_in=-4294967295] [L749] CALL 0 assume_abort_if_not(a_in>0) [L15] COND FALSE 0 !(!cond) VAL [\old(cond)=1, a=0, b=0, cond=1] [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) VAL [\old(cond)=1, a=0, b=0, cond=1] [L750] RET 0 assume_abort_if_not(b_in>0) [L751] CALL 0 start(a_in, b_in) [L726] 0 a=a_in VAL [\old(a_in)=-12884901886, \old(b_in)=-4294967295, a=-12884901886, a_in=-12884901886, b=0, b_in=-4294967295] [L727] 0 b=b_in VAL [\old(a_in)=-12884901886, \old(b_in)=-4294967295, a=-12884901886, a_in=-12884901886, b=-4294967295, b_in=-4294967295] [L728] 0 pthread_t t1, t2; VAL [\old(a_in)=-12884901886, \old(b_in)=-4294967295, a=-12884901886, a_in=-12884901886, b=-4294967295, b_in=-4294967295] [L729] FCALL, FORK 0 pthread_create(&t1, 0, dec_a, 0) VAL [\old(a_in)=-12884901886, \old(b_in)=-4294967295, a=-12884901886, a_in=-12884901886, b=-4294967295, b_in=-4294967295, t1=-1] [L730] FCALL, FORK 0 pthread_create(&t2, 0, dec_b, 0) VAL [\old(a_in)=-12884901886, \old(b_in)=-4294967295, a=-12884901886, a_in=-12884901886, b=-4294967295, b_in=-4294967295, t1=-1, t2=0] [L718] 2 a!=b VAL [\old(arg)={0:0}, a=-12884901886, arg={0:0}, b=-4294967295] [L709] 1 a!=b VAL [\old(arg)={0:0}, a=-12884901886, arg={0:0}, b=-4294967295] [L709] COND TRUE 1 a!=b VAL [\old(arg)={0:0}, a=-12884901886, arg={0:0}, b=-4294967295] [L711] CALL 1 __VERIFIER_atomic_dec_a() [L698] 1 a>b [L698] COND TRUE 1 a>b [L699] EXPR 1 a-b [L699] 1 a=a-b [L711] RET 1 __VERIFIER_atomic_dec_a() [L718] 2 a!=b VAL [\old(arg)={0:0}, a=-8589934591, arg={0:0}, b=-4294967295] Now there is a data race on ~a~0 between C: a=a-b [699] and C: a!=b [718] - 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: 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: 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: 733]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 218 locations, 33 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 659 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 294 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 365 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1050occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 102 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 213 ConstructedInterpolants, 0 QuantifiedInterpolants, 221 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! [2024-11-02 12:28:37,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3631ae-e10b-4b12-a77a-75d7f8f416c6/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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