./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:55:11,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:55:11,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:55:11,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:55:11,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:55:11,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:55:11,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:55:11,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:55:11,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:55:11,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:55:11,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:55:11,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:55:11,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:55:11,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:55:11,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:55:11,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:55:11,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:55:11,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:55:11,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:55:11,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:55:11,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:55:11,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:55:11,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:55:11,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:55:11,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:55:11,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:55:11,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:55:11,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:55:11,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:55:11,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:55:11,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:55:11,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:55:11,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:55:11,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:55:11,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:55:11,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:55:11,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:55:11,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:55:11,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:55:11,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:55:11,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:55:11,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:55:11,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:55:11,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:55:11,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:55:11,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:55:11,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:55:11,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:55:11,430 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:55:11,431 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:55:11,431 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:55:11,431 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:55:11,433 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:55:11,433 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:55:11,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:55:11,434 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:55:11,434 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:55:11,435 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:55:11,435 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:55:11,436 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:55:11,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:55:11,437 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:55:11,437 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:55:11,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:55:11,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:55:11,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:55:11,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:55:11,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:55:11,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:55:11,440 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:55:11,440 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:55:11,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:55:11,441 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:55:11,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:55:11,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:55:11,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:55:11,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:55:11,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:55:11,443 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:55:11,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:55:11,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:55:11,445 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:55:11,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:55:11,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:55:11,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:55:11,446 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_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2022-11-25 23:55:11,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:55:11,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:55:11,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:55:11,832 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:55:11,833 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:55:11,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2022-11-25 23:55:15,270 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:55:15,716 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:55:15,721 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2022-11-25 23:55:15,757 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/data/1f5ac5c37/0b1ddbab360440c093cb6df88ca0795e/FLAG7caa7396b [2022-11-25 23:55:15,780 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/data/1f5ac5c37/0b1ddbab360440c093cb6df88ca0795e [2022-11-25 23:55:15,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:55:15,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:55:15,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:55:15,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:55:15,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:55:15,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:55:15" (1/1) ... [2022-11-25 23:55:15,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3804adb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:15, skipping insertion in model container [2022-11-25 23:55:15,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:55:15" (1/1) ... [2022-11-25 23:55:15,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:55:15,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:55:16,957 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2022-11-25 23:55:16,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:55:16,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:55:16,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:55:16,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:55:17,015 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2022-11-25 23:55:17,020 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2022-11-25 23:55:17,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:55:17,054 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:55:17,113 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2022-11-25 23:55:17,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:55:17,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:55:17,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:55:17,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:55:17,138 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2022-11-25 23:55:17,142 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2022-11-25 23:55:17,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:55:17,262 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:55:17,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17 WrapperNode [2022-11-25 23:55:17,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:55:17,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:55:17,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:55:17,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:55:17,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,408 INFO L138 Inliner]: procedures = 489, calls = 127, calls flagged for inlining = 45, calls inlined = 117, statements flattened = 1809 [2022-11-25 23:55:17,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:55:17,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:55:17,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:55:17,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:55:17,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,677 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:55:17,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:55:17,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:55:17,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:55:17,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (1/1) ... [2022-11-25 23:55:17,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:55:17,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:17,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:55:17,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac7231a-10d0-4f7d-bd39-8d5f60a71ae2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:55:17,827 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2022-11-25 23:55:17,827 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2022-11-25 23:55:17,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 23:55:17,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:55:17,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 23:55:17,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:55:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 23:55:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:55:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:55:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:55:17,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:55:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:55:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:55:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:55:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:55:17,837 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:55:18,318 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:55:18,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:55:21,044 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:55:21,498 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:55:21,499 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-25 23:55:21,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:55:21 BoogieIcfgContainer [2022-11-25 23:55:21,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:55:21,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:55:21,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:55:21,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:55:21,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:55:15" (1/3) ... [2022-11-25 23:55:21,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db9e508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:55:21, skipping insertion in model container [2022-11-25 23:55:21,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:17" (2/3) ... [2022-11-25 23:55:21,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db9e508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:55:21, skipping insertion in model container [2022-11-25 23:55:21,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:55:21" (3/3) ... [2022-11-25 23:55:21,517 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2022-11-25 23:55:21,529 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:55:21,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:55:21,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 90 error locations. [2022-11-25 23:55:21,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:55:21,808 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 23:55:21,889 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:55:21,916 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1800 places, 1845 transitions, 3698 flow [2022-11-25 23:55:21,922 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1800 places, 1845 transitions, 3698 flow [2022-11-25 23:55:21,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1800 places, 1845 transitions, 3698 flow [2022-11-25 23:55:23,909 INFO L130 PetriNetUnfolder]: 89/3419 cut-off events. [2022-11-25 23:55:23,910 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 23:55:23,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 3419 events. 89/3419 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 16424 event pairs, 0 based on Foata normal form. 0/3161 useless extension candidates. Maximal degree in co-relation 1743. Up to 6 conditions per place. [2022-11-25 23:55:24,184 INFO L119 LiptonReduction]: Number of co-enabled transitions 506880 [2022-11-26 00:08:58,736 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 173 DAG size of output: 170 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-26 00:09:06,074 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 173 DAG size of output: 170 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-26 00:09:37,014 WARN L233 SmtUtils]: Spent 9.16s on a formula simplification. DAG size of input: 212 DAG size of output: 205 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-26 00:09:42,027 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 194 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-26 00:09:53,822 WARN L233 SmtUtils]: Spent 11.79s on a formula simplification. DAG size of input: 212 DAG size of output: 205 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-26 00:09:58,910 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 194 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)