./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.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_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/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_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/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_0fb1ed81-b71e-49cd-850b-bd42d8db972e/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_0fb1ed81-b71e-49cd-850b-bd42d8db972e/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 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 [2022-11-25 23:45:13,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:45:13,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:45:13,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:45:13,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:45:13,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:45:13,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:45:13,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:45:13,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:45:13,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:45:13,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:45:13,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:45:13,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:45:13,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:45:13,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:45:13,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:45:13,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:45:13,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:45:13,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:45:13,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:45:13,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:45:13,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:45:13,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:45:13,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:45:13,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:45:13,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:45:13,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:45:13,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:45:13,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:45:13,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:45:13,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:45:13,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:45:13,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:45:13,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:45:13,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:45:13,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:45:13,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:45:13,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:45:13,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:45:13,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:45:13,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:45:13,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:45:13,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:45:13,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:45:13,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:45:13,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:45:13,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:45:13,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:45:13,576 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:45:13,577 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:45:13,577 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:45:13,577 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:45:13,578 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:45:13,578 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:45:13,578 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:45:13,579 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:45:13,579 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:45:13,579 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:45:13,580 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:45:13,580 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:45:13,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:45:13,581 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:45:13,582 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:45:13,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:45:13,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:45:13,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:45:13,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:45:13,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:45:13,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:45:13,584 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:45:13,584 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:45:13,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:45:13,585 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:45:13,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:45:13,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:45:13,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:45:13,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:45:13,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:45:13,587 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:45:13,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:45:13,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:45:13,607 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:45:13,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:45:13,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:45:13,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:45:13,608 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_0fb1ed81-b71e-49cd-850b-bd42d8db972e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-25 23:45:13,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:45:13,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:45:13,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:45:13,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:45:13,994 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:45:13,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-25 23:45:17,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:45:17,540 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:45:17,540 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-25 23:45:17,573 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur/data/b9ecd7470/b1abc6a4a1b34a5982c84a985300954f/FLAG8e903aa4c [2022-11-25 23:45:17,599 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur/data/b9ecd7470/b1abc6a4a1b34a5982c84a985300954f [2022-11-25 23:45:17,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:45:17,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:45:17,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:45:17,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:45:17,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:45:17,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:45:17" (1/1) ... [2022-11-25 23:45:17,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f83b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:17, skipping insertion in model container [2022-11-25 23:45:17,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:45:17" (1/1) ... [2022-11-25 23:45:17,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:45:17,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:45:18,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,492 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_0fb1ed81-b71e-49cd-850b-bd42d8db972e/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-25 23:45:18,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:45:18,534 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:45:18,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,607 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_0fb1ed81-b71e-49cd-850b-bd42d8db972e/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-25 23:45:18,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:18,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:18,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:45:18,710 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:45:18,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18 WrapperNode [2022-11-25 23:45:18,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:45:18,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:45:18,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:45:18,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:45:18,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:18,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:18,912 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3797 [2022-11-25 23:45:18,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:45:18,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:45:18,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:45:18,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:45:18,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:18,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:19,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:19,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:19,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:19,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:19,180 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:19,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:19,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:45:19,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:45:19,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:45:19,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:45:19,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (1/1) ... [2022-11-25 23:45:19,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:45:19,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:45:19,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:45:19,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fb1ed81-b71e-49cd-850b-bd42d8db972e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:45:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 23:45:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:45:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 23:45:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:45:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:45:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:45:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-25 23:45:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-25 23:45:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-25 23:45:19,366 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-25 23:45:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-25 23:45:19,366 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-25 23:45:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:45:19,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:45:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:45:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:45:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:45:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:45:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-25 23:45:19,367 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-25 23:45:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-25 23:45:19,367 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-25 23:45:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-25 23:45:19,368 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-25 23:45:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-25 23:45:19,378 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-25 23:45:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:45:19,382 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 23:45:19,970 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:45:19,972 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:45:24,649 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:45:28,003 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:45:28,004 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:45:28,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:45:28 BoogieIcfgContainer [2022-11-25 23:45:28,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:45:28,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:45:28,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:45:28,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:45:28,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:45:17" (1/3) ... [2022-11-25 23:45:28,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e229e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:45:28, skipping insertion in model container [2022-11-25 23:45:28,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:18" (2/3) ... [2022-11-25 23:45:28,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e229e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:45:28, skipping insertion in model container [2022-11-25 23:45:28,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:45:28" (3/3) ... [2022-11-25 23:45:28,029 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-25 23:45:28,041 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:45:28,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:45:28,055 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2022-11-25 23:45:28,057 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:45:29,259 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 23:45:29,342 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:45:29,368 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2537 places, 2662 transitions, 5359 flow [2022-11-25 23:45:29,372 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2537 places, 2662 transitions, 5359 flow [2022-11-25 23:45:29,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2537 places, 2662 transitions, 5359 flow [2022-11-25 23:45:35,580 INFO L130 PetriNetUnfolder]: 147/2655 cut-off events. [2022-11-25 23:45:35,580 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 23:45:35,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 2655 events. 147/2655 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 18107 event pairs, 0 based on Foata normal form. 0/2424 useless extension candidates. Maximal degree in co-relation 2600. Up to 6 conditions per place. [2022-11-25 23:45:37,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 5686704 [2022-11-25 23:46:02,635 WARN L233 SmtUtils]: Spent 17.82s on a formula simplification. DAG size of input: 306 DAG size of output: 299 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:46:11,662 WARN L233 SmtUtils]: Spent 9.02s on a formula simplification that was a NOOP. DAG size: 296 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:46:34,491 WARN L233 SmtUtils]: Spent 22.82s on a formula simplification. DAG size of input: 330 DAG size of output: 323 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:46:45,637 WARN L233 SmtUtils]: Spent 11.14s on a formula simplification that was a NOOP. DAG size: 320 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:47:52,918 WARN L233 SmtUtils]: Spent 24.11s on a formula simplification. DAG size of input: 306 DAG size of output: 299 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:48:04,556 WARN L233 SmtUtils]: Spent 11.63s on a formula simplification that was a NOOP. DAG size: 296 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:48:34,762 WARN L233 SmtUtils]: Spent 30.20s on a formula simplification. DAG size of input: 330 DAG size of output: 323 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:48:50,236 WARN L233 SmtUtils]: Spent 15.47s on a formula simplification that was a NOOP. DAG size: 320 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:49:51,410 WARN L233 SmtUtils]: Spent 24.14s on a formula simplification. DAG size of input: 307 DAG size of output: 300 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:50:04,124 WARN L233 SmtUtils]: Spent 12.71s on a formula simplification that was a NOOP. DAG size: 300 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:50:37,958 WARN L233 SmtUtils]: Spent 33.83s on a formula simplification. DAG size of input: 331 DAG size of output: 324 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:50:54,640 WARN L233 SmtUtils]: Spent 16.68s on a formula simplification that was a NOOP. DAG size: 324 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:52:07,072 WARN L233 SmtUtils]: Spent 29.49s on a formula simplification. DAG size of input: 306 DAG size of output: 299 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:52:21,224 WARN L233 SmtUtils]: Spent 14.13s on a formula simplification that was a NOOP. DAG size: 296 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:52:53,864 WARN L233 SmtUtils]: Spent 32.63s on a formula simplification. DAG size of input: 330 DAG size of output: 323 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:53:09,597 WARN L233 SmtUtils]: Spent 15.73s on a formula simplification that was a NOOP. DAG size: 320 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:54:14,563 WARN L233 SmtUtils]: Spent 22.92s on a formula simplification. DAG size of input: 307 DAG size of output: 300 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:54:25,277 WARN L233 SmtUtils]: Spent 10.71s on a formula simplification that was a NOOP. DAG size: 300 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:54:53,333 WARN L233 SmtUtils]: Spent 28.05s on a formula simplification. DAG size of input: 331 DAG size of output: 324 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:55:08,464 WARN L233 SmtUtils]: Spent 15.13s on a formula simplification that was a NOOP. DAG size: 324 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:55:32,672 WARN L233 SmtUtils]: Spent 22.49s on a formula simplification. DAG size of input: 307 DAG size of output: 300 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:55:44,305 WARN L233 SmtUtils]: Spent 11.63s on a formula simplification that was a NOOP. DAG size: 300 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:56:13,729 WARN L233 SmtUtils]: Spent 29.42s on a formula simplification. DAG size of input: 331 DAG size of output: 324 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:56:30,277 WARN L233 SmtUtils]: Spent 16.55s on a formula simplification that was a NOOP. DAG size: 324 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:57:03,091 WARN L233 SmtUtils]: Spent 19.48s on a formula simplification. DAG size of input: 307 DAG size of output: 300 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:57:13,469 WARN L233 SmtUtils]: Spent 10.38s on a formula simplification that was a NOOP. DAG size: 300 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:57:41,303 WARN L233 SmtUtils]: Spent 27.83s on a formula simplification. DAG size of input: 331 DAG size of output: 324 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:57:55,210 WARN L233 SmtUtils]: Spent 13.90s on a formula simplification that was a NOOP. DAG size: 324 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)