./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/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_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur --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 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 --- 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 [2022-11-26 00:49:45,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:49:45,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:49:45,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:49:45,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:49:45,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:49:45,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:49:45,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:49:45,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:49:45,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:49:45,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:49:45,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:49:45,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:49:45,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:49:45,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:49:45,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:49:45,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:49:45,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:49:45,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:49:45,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:49:45,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:49:45,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:49:45,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:49:45,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:49:45,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:49:45,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:49:45,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:49:45,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:49:45,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:49:45,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:49:45,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:49:45,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:49:45,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:49:45,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:49:45,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:49:45,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:49:45,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:49:45,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:49:45,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:49:45,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:49:45,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:49:46,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-26 00:49:46,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:49:46,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:49:46,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:49:46,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:49:46,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:49:46,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:49:46,049 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:49:46,049 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:49:46,049 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:49:46,049 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:49:46,050 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:49:46,050 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:49:46,050 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:49:46,054 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:49:46,054 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:49:46,054 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:49:46,054 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:49:46,055 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:49:46,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:49:46,055 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:49:46,056 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:49:46,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:49:46,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:49:46,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:49:46,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:49:46,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:49:46,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:49:46,057 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-26 00:49:46,058 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:49:46,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:49:46,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:49:46,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:49:46,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:49:46,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:49:46,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:49:46,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:49:46,061 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:49:46,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:49:46,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:49:46,071 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:49:46,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:49:46,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:49:46,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:49:46,072 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_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-26 00:49:46,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:49:46,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:49:46,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:49:46,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:49:46,350 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:49:46,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-26 00:49:49,413 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:49:49,756 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:49:49,757 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-26 00:49:49,786 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/data/c99a9c8b9/3cf121b3aa1c4b77a4fcc2ac70c29ed5/FLAG494e5f6d9 [2022-11-26 00:49:49,808 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/data/c99a9c8b9/3cf121b3aa1c4b77a4fcc2ac70c29ed5 [2022-11-26 00:49:49,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:49:49,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:49:49,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:49:49,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:49:49,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:49:49,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:49:49" (1/1) ... [2022-11-26 00:49:49,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633a323f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:49, skipping insertion in model container [2022-11-26 00:49:49,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:49:49" (1/1) ... [2022-11-26 00:49:49,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:49:49,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:49:50,695 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,729 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,800 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,833 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_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-26 00:49:50,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,850 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,851 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:49:50,882 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:49:50,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,930 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,933 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:50,983 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:50,997 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_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-26 00:49:51,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:51,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:51,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:51,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:51,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:51,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:51,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:49:51,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:49:51,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:49:51,202 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:49:51,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51 WrapperNode [2022-11-26 00:49:51,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:49:51,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:49:51,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:49:51,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:49:51,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:51,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:51,597 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 7542 [2022-11-26 00:49:51,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:49:51,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:49:51,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:49:51,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:49:51,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:51,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:51,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:51,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:52,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:52,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:52,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:52,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:52,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:49:52,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:49:52,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:49:52,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:49:52,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (1/1) ... [2022-11-26 00:49:52,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:49:52,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:49:52,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:49:52,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f116f7-00b0-4ac0-9fb6-0883c8165d4b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:49:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-26 00:49:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:49:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-26 00:49:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:49:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:49:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:49:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-26 00:49:52,323 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-26 00:49:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-26 00:49:52,324 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-26 00:49:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-26 00:49:52,324 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-26 00:49:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:49:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:49:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:49:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:49:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:49:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:49:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-26 00:49:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-26 00:49:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-26 00:49:52,326 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-26 00:49:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-26 00:49:52,326 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-26 00:49:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-26 00:49:52,326 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-26 00:49:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:49:52,330 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:49:52,856 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:49:52,859 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:50:01,449 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:50:10,288 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:50:10,288 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:50:10,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:50:10 BoogieIcfgContainer [2022-11-26 00:50:10,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:50:10,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:50:10,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:50:10,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:50:10,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:49:49" (1/3) ... [2022-11-26 00:50:10,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf32577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:50:10, skipping insertion in model container [2022-11-26 00:50:10,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:51" (2/3) ... [2022-11-26 00:50:10,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf32577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:50:10, skipping insertion in model container [2022-11-26 00:50:10,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:50:10" (3/3) ... [2022-11-26 00:50:10,310 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-26 00:50:10,325 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 00:50:10,335 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:50:10,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 621 error locations. [2022-11-26 00:50:10,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:50:13,519 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-26 00:50:13,613 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:50:13,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 4628 places, 4753 transitions, 9541 flow [2022-11-26 00:50:13,640 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 4628 places, 4753 transitions, 9541 flow [2022-11-26 00:50:13,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 4628 places, 4753 transitions, 9541 flow [2022-11-26 00:50:31,055 INFO L130 PetriNetUnfolder]: 147/4746 cut-off events. [2022-11-26 00:50:31,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-26 00:50:31,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 4746 events. 147/4746 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 36114 event pairs, 0 based on Foata normal form. 0/3978 useless extension candidates. Maximal degree in co-relation 4682. Up to 6 conditions per place. [2022-11-26 00:50:38,002 INFO L119 LiptonReduction]: Number of co-enabled transitions 18597588 [2022-11-26 00:54:31,550 WARN L233 SmtUtils]: Spent 3.63m on a formula simplification. DAG size of input: 218 DAG size of output: 203 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-26 00:56:21,813 WARN L233 SmtUtils]: Spent 1.84m on a formula simplification that was a NOOP. DAG size: 203 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-26 01:01:02,702 WARN L233 SmtUtils]: Spent 4.68m on a formula simplification. DAG size of input: 239 DAG size of output: 210 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-26 01:03:23,619 WARN L233 SmtUtils]: Spent 2.35m on a formula simplification that was a NOOP. DAG size: 210 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)