./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/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_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/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_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --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 23:52:04,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:52:04,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:52:04,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:52:04,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:52:04,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:52:04,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:52:04,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:52:04,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:52:04,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:52:04,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:52:04,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:52:04,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:52:04,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:52:04,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:52:04,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:52:04,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:52:04,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:52:04,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:52:04,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:52:04,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:52:04,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:52:04,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:52:04,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:52:04,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:52:04,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:52:04,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:52:04,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:52:04,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:52:04,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:52:04,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:52:04,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:52:04,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:52:04,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:52:04,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:52:04,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:52:04,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:52:04,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:52:04,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:52:04,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:52:04,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:52:04,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:52:04,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:52:04,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:52:04,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:52:04,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:52:04,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:52:04,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:52:04,436 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:52:04,437 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:52:04,437 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:52:04,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:52:04,438 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:52:04,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:52:04,439 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:52:04,439 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:52:04,440 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:52:04,440 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:52:04,440 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:52:04,440 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:52:04,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:52:04,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:52:04,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:52:04,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:52:04,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:52:04,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:52:04,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:52:04,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:52:04,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:52:04,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:52:04,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:52:04,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:52:04,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:52:04,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:52:04,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:52:04,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:52:04,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:52:04,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:52:04,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:52:04,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:52:04,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:52:04,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:52:04,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:52:04,448 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_533e9492-b707-4e58-981b-9d1442890fe7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-25 23:52:04,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:52:04,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:52:04,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:52:04,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:52:04,846 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:52:04,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-25 23:52:08,199 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:52:08,661 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:52:08,662 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-25 23:52:08,695 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/data/564025f3f/2c6d13286abb4cd18e7fefb0a43b8b09/FLAGe2ee31edb [2022-11-25 23:52:08,713 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/data/564025f3f/2c6d13286abb4cd18e7fefb0a43b8b09 [2022-11-25 23:52:08,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:52:08,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:52:08,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:52:08,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:52:08,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:52:08,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:52:08" (1/1) ... [2022-11-25 23:52:08,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b06ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:08, skipping insertion in model container [2022-11-25 23:52:08,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:52:08" (1/1) ... [2022-11-25 23:52:08,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:52:08,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:52:09,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,842 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_533e9492-b707-4e58-981b-9d1442890fe7/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-25 23:52:09,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,851 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:52:09,904 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:52:09,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,970 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,986 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,988 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:09,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:09,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:10,003 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_533e9492-b707-4e58-981b-9d1442890fe7/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-25 23:52:10,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:10,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:10,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:10,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:10,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:10,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:10,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:10,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:10,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:52:10,142 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:52:10,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10 WrapperNode [2022-11-25 23:52:10,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:52:10,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:52:10,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:52:10,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:52:10,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,329 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3713 [2022-11-25 23:52:10,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:52:10,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:52:10,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:52:10,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:52:10,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,533 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:52:10,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:52:10,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:52:10,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:52:10,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (1/1) ... [2022-11-25 23:52:10,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:52:10,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:52:10,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:52:10,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533e9492-b707-4e58-981b-9d1442890fe7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:52:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 23:52:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:52:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 23:52:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:52:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:52:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:52:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-25 23:52:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-25 23:52:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-25 23:52:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-25 23:52:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-25 23:52:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-25 23:52:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:52:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:52:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:52:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:52:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:52:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:52:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-25 23:52:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-25 23:52:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-25 23:52:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-25 23:52:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-25 23:52:10,696 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-25 23:52:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-25 23:52:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-25 23:52:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:52:10,702 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 23:52:11,355 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:52:11,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:52:15,674 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:52:18,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:52:18,531 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:52:18,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:52:18 BoogieIcfgContainer [2022-11-25 23:52:18,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:52:18,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:52:18,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:52:18,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:52:18,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:52:08" (1/3) ... [2022-11-25 23:52:18,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d966215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:52:18, skipping insertion in model container [2022-11-25 23:52:18,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:10" (2/3) ... [2022-11-25 23:52:18,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d966215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:52:18, skipping insertion in model container [2022-11-25 23:52:18,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:52:18" (3/3) ... [2022-11-25 23:52:18,546 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-25 23:52:18,555 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:52:18,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:52:18,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-25 23:52:18,566 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:52:19,396 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 23:52:19,460 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:52:19,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2446 places, 2571 transitions, 5177 flow [2022-11-25 23:52:19,477 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2446 places, 2571 transitions, 5177 flow [2022-11-25 23:52:19,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2446 places, 2571 transitions, 5177 flow [2022-11-25 23:52:24,683 INFO L130 PetriNetUnfolder]: 147/2564 cut-off events. [2022-11-25 23:52:24,683 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 23:52:24,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2586 conditions, 2564 events. 147/2564 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 17350 event pairs, 0 based on Foata normal form. 0/2410 useless extension candidates. Maximal degree in co-relation 2509. Up to 6 conditions per place. [2022-11-25 23:52:26,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 5291894 [2022-11-25 23:53:24,612 WARN L233 SmtUtils]: Spent 20.27s 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 23:53:35,850 WARN L233 SmtUtils]: Spent 11.23s 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 23:54:00,207 WARN L233 SmtUtils]: Spent 24.35s 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 23:54:11,498 WARN L233 SmtUtils]: Spent 11.29s 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 23:55:53,670 WARN L233 SmtUtils]: Spent 26.23s 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 23:56:05,730 WARN L233 SmtUtils]: Spent 12.06s 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 23:56:39,859 WARN L233 SmtUtils]: Spent 34.12s 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 23:56:55,253 WARN L233 SmtUtils]: Spent 15.39s 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 23:58:29,287 WARN L233 SmtUtils]: Spent 25.00s 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 23:58:42,372 WARN L233 SmtUtils]: Spent 13.08s 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 23:59:15,871 WARN L233 SmtUtils]: Spent 33.49s 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 23:59:32,046 WARN L233 SmtUtils]: Spent 16.17s 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) [2022-11-26 00:01:09,976 WARN L233 SmtUtils]: Spent 26.70s 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) [2022-11-26 00:01:25,293 WARN L233 SmtUtils]: Spent 15.31s 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) [2022-11-26 00:02:00,036 WARN L233 SmtUtils]: Spent 34.74s 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) [2022-11-26 00:02:18,199 WARN L233 SmtUtils]: Spent 18.16s 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) [2022-11-26 00:04:20,954 WARN L233 SmtUtils]: Spent 25.09s 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) [2022-11-26 00:04:37,384 WARN L233 SmtUtils]: Spent 16.43s 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) [2022-11-26 00:05:10,486 WARN L233 SmtUtils]: Spent 33.10s 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) [2022-11-26 00:05:28,238 WARN L233 SmtUtils]: Spent 17.75s 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) [2022-11-26 00:06:00,813 WARN L233 SmtUtils]: Spent 28.73s 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) [2022-11-26 00:06:17,315 WARN L233 SmtUtils]: Spent 16.50s 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) [2022-11-26 00:06:52,164 WARN L233 SmtUtils]: Spent 34.84s 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) [2022-11-26 00:07:07,553 WARN L233 SmtUtils]: Spent 15.39s 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)