./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --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-2329fc7 [2022-12-14 14:06:40,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:06:40,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:06:41,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:06:41,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:06:41,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:06:41,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:06:41,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:06:41,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:06:41,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:06:41,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:06:41,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:06:41,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:06:41,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:06:41,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:06:41,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:06:41,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:06:41,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:06:41,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:06:41,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:06:41,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:06:41,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:06:41,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:06:41,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:06:41,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:06:41,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:06:41,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:06:41,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:06:41,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:06:41,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:06:41,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:06:41,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:06:41,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:06:41,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:06:41,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:06:41,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:06:41,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:06:41,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:06:41,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:06:41,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:06:41,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:06:41,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 14:06:41,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:06:41,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:06:41,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:06:41,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:06:41,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:06:41,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:06:41,075 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:06:41,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:06:41,075 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:06:41,076 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:06:41,076 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:06:41,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:06:41,076 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:06:41,076 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:06:41,077 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:06:41,077 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:06:41,077 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:06:41,077 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:06:41,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:06:41,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:06:41,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:06:41,078 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:06:41,079 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:06:41,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:06:41,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:06:41,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:06:41,079 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:06:41,079 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:06:41,080 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:06:41,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:06:41,080 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:06:41,080 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:06:41,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:06:41,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:06:41,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:06:41,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:06:41,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:06:41,081 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:06:41,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:06:41,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:06:41,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:06:41,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:06:41,082 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_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-12-14 14:06:41,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:06:41,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:06:41,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:06:41,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:06:41,313 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:06:41,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-12-14 14:06:43,962 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:06:44,146 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:06:44,147 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-12-14 14:06:44,158 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/data/b6d764efd/02222f7c81f2450fb3461c4d24208d60/FLAG829515b31 [2022-12-14 14:06:44,168 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/data/b6d764efd/02222f7c81f2450fb3461c4d24208d60 [2022-12-14 14:06:44,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:06:44,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:06:44,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:06:44,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:06:44,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:06:44,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:44,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa96f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44, skipping insertion in model container [2022-12-14 14:06:44,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:44,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:06:44,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:06:44,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,695 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,736 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_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-12-14 14:06:44,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:06:44,774 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:06:44,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,837 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_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-12-14 14:06:44,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:06:44,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:06:44,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:06:44,982 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:06:44,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44 WrapperNode [2022-12-14 14:06:44,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:06:44,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:06:44,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:06:44,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:06:44,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,104 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3713 [2022-12-14 14:06:45,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:06:45,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:06:45,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:06:45,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:06:45,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,214 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:06:45,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:06:45,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:06:45,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:06:45,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (1/1) ... [2022-12-14 14:06:45,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:06:45,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:06:45,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:06:45,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914f72cd-1de9-4522-a5f0-c1db8ad59a7f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:06:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 14:06:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:06:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 14:06:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:06:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:06:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:06:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-12-14 14:06:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-12-14 14:06:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-12-14 14:06:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-12-14 14:06:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-12-14 14:06:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-12-14 14:06:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:06:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:06:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:06:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:06:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 14:06:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:06:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-12-14 14:06:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-12-14 14:06:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-12-14 14:06:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-12-14 14:06:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-12-14 14:06:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-12-14 14:06:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-12-14 14:06:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-12-14 14:06:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:06:45,284 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 14:06:45,587 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:06:45,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:06:48,872 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:06:52,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:06:52,431 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 14:06:52,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:06:52 BoogieIcfgContainer [2022-12-14 14:06:52,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:06:52,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:06:52,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:06:52,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:06:52,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:06:44" (1/3) ... [2022-12-14 14:06:52,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d22405b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:06:52, skipping insertion in model container [2022-12-14 14:06:52,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:06:44" (2/3) ... [2022-12-14 14:06:52,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d22405b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:06:52, skipping insertion in model container [2022-12-14 14:06:52,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:06:52" (3/3) ... [2022-12-14 14:06:52,441 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-12-14 14:06:52,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:06:52,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1344 error locations. [2022-12-14 14:06:52,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 14:06:53,911 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 14:06:53,960 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 14:06:53,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 3786 places, 3911 transitions, 7857 flow [2022-12-14 14:06:53,972 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 3786 places, 3911 transitions, 7857 flow [2022-12-14 14:06:53,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 3786 places, 3911 transitions, 7857 flow [2022-12-14 14:07:00,153 INFO L130 PetriNetUnfolder]: 147/3904 cut-off events. [2022-12-14 14:07:00,153 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 14:07:00,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3926 conditions, 3904 events. 147/3904 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 31733 event pairs, 0 based on Foata normal form. 0/2413 useless extension candidates. Maximal degree in co-relation 3844. Up to 6 conditions per place. [2022-12-14 14:07:02,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 12477512 [2022-12-14 14:10:04,512 WARN L233 SmtUtils]: Spent 9.12s on a formula simplification. DAG size of input: 274 DAG size of output: 239 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:10:21,182 WARN L233 SmtUtils]: Spent 12.66s on a formula simplification. DAG size of input: 292 DAG size of output: 254 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:10:26,756 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 249 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:12:30,773 WARN L233 SmtUtils]: Spent 2.07m on a formula simplification. DAG size of input: 524 DAG size of output: 424 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:13:18,208 WARN L233 SmtUtils]: Spent 47.43s on a formula simplification that was a NOOP. DAG size: 416 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:17:45,200 WARN L233 SmtUtils]: Spent 4.45m on a formula simplification. DAG size of input: 557 DAG size of output: 456 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:18:46,317 WARN L233 SmtUtils]: Spent 1.02m on a formula simplification that was a NOOP. DAG size: 448 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:20:26,954 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 245 DAG size of output: 213 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:20:41,225 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 259 DAG size of output: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:21:13,512 WARN L233 SmtUtils]: Spent 15.39s on a formula simplification. DAG size of input: 274 DAG size of output: 239 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:21:36,879 WARN L233 SmtUtils]: Spent 18.66s on a formula simplification. DAG size of input: 292 DAG size of output: 254 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 14:21:42,001 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 249 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)