./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI --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-5e519f3 [2022-11-03 04:09:06,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:09:06,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:09:06,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:09:06,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:09:06,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:09:06,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:09:06,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:09:06,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:09:06,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:09:06,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:09:06,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:09:06,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:09:06,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:09:06,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:09:06,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:09:06,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:09:06,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:09:06,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:09:06,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:09:06,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:09:06,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:09:06,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:09:06,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:09:06,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:09:06,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:09:06,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:09:06,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:09:06,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:09:06,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:09:06,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:09:06,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:09:06,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:09:06,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:09:06,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:09:06,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:09:06,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:09:06,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:09:06,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:09:06,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:09:06,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:09:06,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:09:06,558 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:09:06,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:09:06,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:09:06,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:09:06,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:09:06,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:09:06,560 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:09:06,560 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:09:06,560 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:09:06,561 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:09:06,561 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:09:06,561 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:09:06,561 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:09:06,561 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:09:06,562 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:09:06,562 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:09:06,562 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:09:06,562 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:09:06,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:09:06,564 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:09:06,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:09:06,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:09:06,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:09:06,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:09:06,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:09:06,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:09:06,565 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:09:06,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:09:06,565 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:09:06,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:09:06,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:09:06,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:09:06,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:06,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:09:06,567 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:09:06,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:09:06,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:09:06,568 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:09:06,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:09:06,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:09:06,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:09:06,568 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_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-03 04:09:06,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:09:06,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:09:06,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:09:06,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:09:06,969 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:09:06,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-03 04:09:07,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/data/f882ee42e/e3e6a409d8594595b650d9cb0eb99bc8/FLAG1f8c4fef0 [2022-11-03 04:09:07,777 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:09:07,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-03 04:09:07,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/data/f882ee42e/e3e6a409d8594595b650d9cb0eb99bc8/FLAG1f8c4fef0 [2022-11-03 04:09:07,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/data/f882ee42e/e3e6a409d8594595b650d9cb0eb99bc8 [2022-11-03 04:09:07,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:09:07,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:09:07,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:07,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:09:07,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:09:07,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:07" (1/1) ... [2022-11-03 04:09:07,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9676f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:07, skipping insertion in model container [2022-11-03 04:09:07,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:07" (1/1) ... [2022-11-03 04:09:08,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:09:08,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:09:08,959 WARN L230 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_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-03 04:09:09,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:09,043 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:09:09,145 WARN L230 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_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-03 04:09:09,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:09,243 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:09:09,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09 WrapperNode [2022-11-03 04:09:09,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:09,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:09,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:09:09,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:09:09,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,490 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3713 [2022-11-03 04:09:09,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:09,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:09:09,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:09:09,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:09:09,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:09:09,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:09:09,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:09:09,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:09:09,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (1/1) ... [2022-11-03 04:09:09,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:09,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:09,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:09:09,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c7126a0-2b62-4e7d-9d14-451c54ccbd16/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:09:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 04:09:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:09:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 04:09:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:09:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:09:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:09:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-03 04:09:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-03 04:09:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-03 04:09:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-03 04:09:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-03 04:09:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-03 04:09:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:09:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:09:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:09:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:09:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:09:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:09:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-03 04:09:09,851 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-03 04:09:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-03 04:09:09,852 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-03 04:09:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-03 04:09:09,852 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-03 04:09:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-03 04:09:09,853 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-03 04:09:09,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:09:09,857 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 04:09:10,395 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:09:10,398 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:09:14,387 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:09:17,493 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:09:17,494 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 04:09:17,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:17 BoogieIcfgContainer [2022-11-03 04:09:17,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:09:17,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:09:17,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:09:17,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:09:17,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:07" (1/3) ... [2022-11-03 04:09:17,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c512412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:17, skipping insertion in model container [2022-11-03 04:09:17,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:09" (2/3) ... [2022-11-03 04:09:17,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c512412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:17, skipping insertion in model container [2022-11-03 04:09:17,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:17" (3/3) ... [2022-11-03 04:09:17,510 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-03 04:09:17,521 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 04:09:17,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:09:17,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-03 04:09:17,535 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 04:09:18,433 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 04:09:18,496 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 04:09:18,512 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2446 places, 2571 transitions, 5177 flow [2022-11-03 04:09:18,515 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 2446 places, 2571 transitions, 5177 flow [2022-11-03 04:09:18,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2446 places, 2571 transitions, 5177 flow [2022-11-03 04:09:24,191 INFO L130 PetriNetUnfolder]: 147/2564 cut-off events. [2022-11-03 04:09:24,192 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-03 04:09:24,618 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 17344 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. [2022-11-03 04:09:25,789 INFO L118 LiptonReduction]: Number of co-enabled transitions 5291894 [2022-11-03 04:11:59,089 WARN L234 SmtUtils]: Spent 30.60s 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) [2022-11-03 04:12:14,383 WARN L234 SmtUtils]: Spent 15.29s 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) [2022-11-03 04:12:52,275 WARN L234 SmtUtils]: Spent 37.89s 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) [2022-11-03 04:13:12,732 WARN L234 SmtUtils]: Spent 20.45s 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) [2022-11-03 04:14:55,013 WARN L234 SmtUtils]: Spent 27.59s 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) [2022-11-03 04:15:09,908 WARN L234 SmtUtils]: Spent 14.89s 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) [2022-11-03 04:15:48,401 WARN L234 SmtUtils]: Spent 38.49s 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) [2022-11-03 04:16:04,527 WARN L234 SmtUtils]: Spent 16.12s 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) [2022-11-03 04:18:15,904 WARN L234 SmtUtils]: Spent 24.07s 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) [2022-11-03 04:18:28,551 WARN L234 SmtUtils]: Spent 12.64s 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) [2022-11-03 04:18:58,321 WARN L234 SmtUtils]: Spent 29.76s 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) [2022-11-03 04:19:13,242 WARN L234 SmtUtils]: Spent 14.92s 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) [2022-11-03 04:20:29,324 WARN L234 SmtUtils]: Spent 23.94s 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) [2022-11-03 04:20:41,843 WARN L234 SmtUtils]: Spent 12.51s 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) [2022-11-03 04:21:11,097 WARN L234 SmtUtils]: Spent 29.25s 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) [2022-11-03 04:21:26,281 WARN L234 SmtUtils]: Spent 15.18s 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) [2022-11-03 04:24:03,362 WARN L234 SmtUtils]: Spent 24.44s 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) [2022-11-03 04:24:15,072 WARN L234 SmtUtils]: Spent 11.71s 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)