./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 5e519f3a 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_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/gcd-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI --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 Taipan --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-5e519f3 [2022-11-03 02:06:43,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:06:43,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:06:43,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:06:43,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:06:43,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:06:43,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:06:43,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:06:43,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:06:43,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:06:43,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:06:43,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:06:43,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:06:43,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:06:43,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:06:43,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:06:43,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:06:43,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:06:43,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:06:43,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:06:43,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:06:43,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:06:43,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:06:43,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:06:43,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:06:43,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:06:43,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:06:43,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:06:43,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:06:43,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:06:43,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:06:43,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:06:43,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:06:43,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:06:43,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:06:43,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:06:43,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:06:43,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:06:43,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:06:43,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:06:43,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:06:43,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-03 02:06:43,424 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:06:43,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:06:43,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:06:43,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:06:43,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:06:43,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:06:43,429 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:06:43,429 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:06:43,429 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:06:43,430 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:06:43,431 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:06:43,431 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:06:43,431 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:06:43,432 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:06:43,432 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:06:43,432 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:06:43,432 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:06:43,433 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:06:43,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:06:43,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:06:43,434 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:06:43,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:06:43,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:06:43,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:06:43,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:06:43,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:06:43,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:06:43,437 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-03 02:06:43,437 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:06:43,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:06:43,437 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:06:43,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:06:43,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:06:43,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:06:43,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:43,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:06:43,439 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:06:43,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:06:43,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:06:43,440 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:06:43,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:06:43,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:06:43,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:06:43,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 [2022-11-03 02:06:43,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:06:43,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:06:43,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:06:43,777 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:06:43,778 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:06:43,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-atomic/gcd-2.i [2022-11-03 02:06:43,873 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/data/69d0c5edb/0d26e9a6dc694bd1bd8cbe736f31f6b1/FLAG778967405 [2022-11-03 02:06:44,528 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:06:44,529 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/sv-benchmarks/c/pthread-atomic/gcd-2.i [2022-11-03 02:06:44,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/data/69d0c5edb/0d26e9a6dc694bd1bd8cbe736f31f6b1/FLAG778967405 [2022-11-03 02:06:44,805 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/data/69d0c5edb/0d26e9a6dc694bd1bd8cbe736f31f6b1 [2022-11-03 02:06:44,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:06:44,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:06:44,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:44,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:06:44,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:06:44,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:44" (1/1) ... [2022-11-03 02:06:44,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eccb6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:44, skipping insertion in model container [2022-11-03 02:06:44,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:44" (1/1) ... [2022-11-03 02:06:44,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:06:44,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:06:45,072 WARN L230 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_6d7e6a20-0ae9-4411-be72-912c52ac1460/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2022-11-03 02:06:45,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:45,266 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:06:45,280 WARN L230 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_6d7e6a20-0ae9-4411-be72-912c52ac1460/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2022-11-03 02:06:45,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:45,361 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:06:45,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45 WrapperNode [2022-11-03 02:06:45,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:45,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:45,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:06:45,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:06:45,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,456 INFO L138 Inliner]: procedures = 174, calls = 30, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 174 [2022-11-03 02:06:45,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:45,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:06:45,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:06:45,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:06:45,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,523 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:06:45,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:06:45,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:06:45,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:06:45,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (1/1) ... [2022-11-03 02:06:45,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:45,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:45,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:06:45,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:06:45,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:06:45,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:06:45,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:06:45,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:06:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:06:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2022-11-03 02:06:45,640 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2022-11-03 02:06:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2022-11-03 02:06:45,640 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2022-11-03 02:06:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:06:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:06:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:06:45,642 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:06:45,771 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:06:45,773 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:06:46,318 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:06:46,449 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:06:46,449 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:06:46,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:46 BoogieIcfgContainer [2022-11-03 02:06:46,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:06:46,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:06:46,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:06:46,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:06:46,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:06:44" (1/3) ... [2022-11-03 02:06:46,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bad11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:46, skipping insertion in model container [2022-11-03 02:06:46,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:45" (2/3) ... [2022-11-03 02:06:46,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bad11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:46, skipping insertion in model container [2022-11-03 02:06:46,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:46" (3/3) ... [2022-11-03 02:06:46,472 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2022-11-03 02:06:46,491 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:06:46,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:06:46,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-11-03 02:06:46,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:06:46,597 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 02:06:46,637 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:06:46,668 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 197 transitions, 410 flow [2022-11-03 02:06:46,671 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 197 transitions, 410 flow [2022-11-03 02:06:46,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 197 transitions, 410 flow [2022-11-03 02:06:46,750 INFO L130 PetriNetUnfolder]: 12/195 cut-off events. [2022-11-03 02:06:46,751 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-03 02:06:46,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 195 events. 12/195 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-11-03 02:06:46,758 INFO L118 LiptonReduction]: Number of co-enabled transitions 1836 [2022-11-03 02:07:00,321 INFO L133 LiptonReduction]: Checked pairs total: 6706 [2022-11-03 02:07:00,322 INFO L135 LiptonReduction]: Total number of compositions: 247 [2022-11-03 02:07:00,335 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 45 transitions, 106 flow [2022-11-03 02:07:00,409 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 619 states, 481 states have (on average 3.496881496881497) internal successors, (1682), 618 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:00,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:07:00,434 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=FINITE_AUTOMATA, 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;@293eff4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:07:00,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-03 02:07:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 619 states, 481 states have (on average 3.496881496881497) internal successors, (1682), 618 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-03 02:07:00,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:00,445 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-03 02:07:00,445 INFO L420 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 31 more)] === [2022-11-03 02:07:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:00,452 INFO L85 PathProgramCache]: Analyzing trace with hash 867, now seen corresponding path program 1 times [2022-11-03 02:07:00,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:00,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751825143] [2022-11-03 02:07:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:00,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:00,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:00,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751825143] [2022-11-03 02:07:00,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751825143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:00,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:00,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-03 02:07:00,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548559716] [2022-11-03 02:07:00,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:00,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:07:00,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:00,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:07:00,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:07:00,610 INFO L87 Difference]: Start difference. First operand has 619 states, 481 states have (on average 3.496881496881497) internal successors, (1682), 618 states have internal predecessors, (1682), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:00,686 INFO L93 Difference]: Finished difference Result 127 states and 299 transitions. [2022-11-03 02:07:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:07:00,688 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-03 02:07:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:00,700 INFO L225 Difference]: With dead ends: 127 [2022-11-03 02:07:00,700 INFO L226 Difference]: Without dead ends: 86 [2022-11-03 02:07:00,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:07:00,706 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:00,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:07:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-03 02:07:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-03 02:07:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.4235294117647057) internal successors, (206), 85 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 206 transitions. [2022-11-03 02:07:00,748 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 206 transitions. Word has length 1 [2022-11-03 02:07:00,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:00,749 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 206 transitions. [2022-11-03 02:07:00,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 206 transitions. [2022-11-03 02:07:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:07:00,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:00,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:07:00,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:07:00,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-03 02:07:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:00,752 INFO L85 PathProgramCache]: Analyzing trace with hash -272861309, now seen corresponding path program 1 times [2022-11-03 02:07:00,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:00,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174965148] [2022-11-03 02:07:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:00,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:00,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174965148] [2022-11-03 02:07:00,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174965148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:00,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:00,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:07:00,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998339597] [2022-11-03 02:07:00,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:00,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:00,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:00,933 INFO L87 Difference]: Start difference. First operand 86 states and 206 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:01,016 INFO L93 Difference]: Finished difference Result 106 states and 249 transitions. [2022-11-03 02:07:01,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:01,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-03 02:07:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:01,018 INFO L225 Difference]: With dead ends: 106 [2022-11-03 02:07:01,018 INFO L226 Difference]: Without dead ends: 96 [2022-11-03 02:07:01,019 INFO L412 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 [2022-11-03 02:07:01,020 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:01,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 13 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:01,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-03 02:07:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2022-11-03 02:07:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.3466666666666667) internal successors, (176), 75 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 176 transitions. [2022-11-03 02:07:01,030 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 176 transitions. Word has length 6 [2022-11-03 02:07:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:01,030 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 176 transitions. [2022-11-03 02:07:01,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 176 transitions. [2022-11-03 02:07:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:07:01,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:01,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:01,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:07:01,033 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)] === [2022-11-03 02:07:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash -721609407, now seen corresponding path program 1 times [2022-11-03 02:07:01,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:01,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143211323] [2022-11-03 02:07:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:01,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:01,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:07:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:01,215 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:07:01,216 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:07:01,217 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (34 of 35 remaining) [2022-11-03 02:07:01,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (33 of 35 remaining) [2022-11-03 02:07:01,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (32 of 35 remaining) [2022-11-03 02:07:01,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (31 of 35 remaining) [2022-11-03 02:07:01,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (30 of 35 remaining) [2022-11-03 02:07:01,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (29 of 35 remaining) [2022-11-03 02:07:01,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (28 of 35 remaining) [2022-11-03 02:07:01,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (27 of 35 remaining) [2022-11-03 02:07:01,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (26 of 35 remaining) [2022-11-03 02:07:01,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (25 of 35 remaining) [2022-11-03 02:07:01,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (24 of 35 remaining) [2022-11-03 02:07:01,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (23 of 35 remaining) [2022-11-03 02:07:01,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (22 of 35 remaining) [2022-11-03 02:07:01,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (21 of 35 remaining) [2022-11-03 02:07:01,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (20 of 35 remaining) [2022-11-03 02:07:01,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (19 of 35 remaining) [2022-11-03 02:07:01,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 35 remaining) [2022-11-03 02:07:01,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 35 remaining) [2022-11-03 02:07:01,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 35 remaining) [2022-11-03 02:07:01,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 35 remaining) [2022-11-03 02:07:01,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 35 remaining) [2022-11-03 02:07:01,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 35 remaining) [2022-11-03 02:07:01,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (12 of 35 remaining) [2022-11-03 02:07:01,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (11 of 35 remaining) [2022-11-03 02:07:01,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (10 of 35 remaining) [2022-11-03 02:07:01,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (9 of 35 remaining) [2022-11-03 02:07:01,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (8 of 35 remaining) [2022-11-03 02:07:01,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (7 of 35 remaining) [2022-11-03 02:07:01,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (6 of 35 remaining) [2022-11-03 02:07:01,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (5 of 35 remaining) [2022-11-03 02:07:01,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (4 of 35 remaining) [2022-11-03 02:07:01,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (3 of 35 remaining) [2022-11-03 02:07:01,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (2 of 35 remaining) [2022-11-03 02:07:01,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (1 of 35 remaining) [2022-11-03 02:07:01,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (0 of 35 remaining) [2022-11-03 02:07:01,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:07:01,246 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 02:07:01,254 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 02:07:01,254 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:07:01,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:07:01 BasicIcfg [2022-11-03 02:07:01,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:07:01,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:07:01,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:07:01,323 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:07:01,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:46" (3/4) ... [2022-11-03 02:07:01,326 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:07:01,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:07:01,330 INFO L158 Benchmark]: Toolchain (without parser) took 16517.32ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 80.3MB in the beginning and 98.7MB in the end (delta: -18.5MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-11-03 02:07:01,331 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory was 97.9MB in the beginning and 97.9MB in the end (delta: 69.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:07:01,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 547.29ms. Allocated memory is still 119.5MB. Free memory was 80.1MB in the beginning and 85.0MB in the end (delta: -4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:07:01,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.23ms. Allocated memory is still 119.5MB. Free memory was 85.0MB in the beginning and 82.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:07:01,333 INFO L158 Benchmark]: Boogie Preprocessor took 72.24ms. Allocated memory is still 119.5MB. Free memory was 82.4MB in the beginning and 80.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:07:01,333 INFO L158 Benchmark]: RCFGBuilder took 916.47ms. Allocated memory is still 119.5MB. Free memory was 80.3MB in the beginning and 53.9MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-03 02:07:01,334 INFO L158 Benchmark]: TraceAbstraction took 14865.43ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 53.0MB in the beginning and 98.7MB in the end (delta: -45.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:07:01,334 INFO L158 Benchmark]: Witness Printer took 4.57ms. Allocated memory is still 144.7MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:07:01,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory was 97.9MB in the beginning and 97.9MB in the end (delta: 69.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 547.29ms. Allocated memory is still 119.5MB. Free memory was 80.1MB in the beginning and 85.0MB in the end (delta: -4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.23ms. Allocated memory is still 119.5MB. Free memory was 85.0MB in the beginning and 82.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.24ms. Allocated memory is still 119.5MB. Free memory was 82.4MB in the beginning and 80.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 916.47ms. Allocated memory is still 119.5MB. Free memory was 80.3MB in the beginning and 53.9MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 14865.43ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 53.0MB in the beginning and 98.7MB in the end (delta: -45.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.57ms. Allocated memory is still 144.7MB. Free memory is still 98.7MB. 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: 13.7s, 192 PlacesBefore, 48 PlacesAfterwards, 197 TransitionsBefore, 45 TransitionsAfterwards, 1836 CoEnabledTransitionPairs, 8 FixpointIterations, 137 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 7 ConcurrentYvCompositions, 8 ChoiceCompositions, 247 TotalNumberOfCompositions, 6706 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4212, positive: 4018, positive conditional: 0, positive unconditional: 4018, negative: 194, negative conditional: 0, negative unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1699, positive: 1678, positive conditional: 0, positive unconditional: 1678, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1699, positive: 1410, positive conditional: 0, positive unconditional: 1410, negative: 289, negative conditional: 0, negative unconditional: 289, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 289, positive: 268, positive conditional: 0, positive unconditional: 268, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 404, positive: 291, positive conditional: 0, positive unconditional: 291, negative: 113, negative conditional: 0, negative unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4212, positive: 2340, positive conditional: 0, positive unconditional: 2340, negative: 173, negative conditional: 0, negative unconditional: 173, unknown: 1699, unknown conditional: 0, unknown unconditional: 1699] , Statistics on independence cache: Total cache size (in pairs): 243, Positive cache size: 228, Positive conditional cache size: 0, Positive unconditional cache size: 228, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - 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: 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)=4294967289, \old(b_in)=4294967295, a=-4294967303, a_in=4294967289, b=-4294967297, b_in=4294967295, pthread_create(&t1, 0, dec_a, 0)=-2, t1={3:0}, t2={5:0}] [L709] 1 a!=b VAL [a=-4294967303, arg={0:0}, arg={0:0}, b=-4294967297] [L730] FCALL, FORK 0 pthread_create(&t2, 0, dec_b, 0) VAL [\old(a_in)=4294967289, \old(b_in)=4294967295, a=-4294967303, a_in=4294967289, b=-4294967297, b_in=4294967295, pthread_create(&t2, 0, dec_b, 0)=-1, t1={3:0}, t2={5:0}] [L718] 2 a!=b [L718] COND TRUE 2 a!=b VAL [a=-4294967303, 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=-4294967303, arg={0:0}, arg={0:0}, b=6] 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: 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. - 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 222 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 14.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 15 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=619occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 20 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:07:01,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7e6a20-0ae9-4411-be72-912c52ac1460/bin/utaipan-7li7fVZpFI/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