./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 4e7fbc69 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_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 13:48:15,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:48:15,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:48:15,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:48:15,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:48:15,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:48:15,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:48:15,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:48:15,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:48:15,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:48:15,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:48:15,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:48:15,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:48:15,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:48:15,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:48:15,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:48:15,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:48:15,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:48:15,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:48:15,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:48:15,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:48:15,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:48:15,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:48:15,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:48:15,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:48:15,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:48:15,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:48:15,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:48:15,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:48:15,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:48:15,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:48:15,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:48:15,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:48:15,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:48:15,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:48:15,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:48:15,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:48:15,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:48:15,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:48:15,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:48:15,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:48:15,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 13:48:15,571 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:48:15,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:48:15,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:48:15,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:48:15,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:48:15,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:48:15,574 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:48:15,574 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:48:15,574 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:48:15,574 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:48:15,575 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:48:15,576 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:48:15,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:48:15,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:48:15,576 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:48:15,576 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:48:15,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:48:15,577 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:48:15,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:48:15,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:48:15,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:48:15,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:48:15,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:48:15,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:48:15,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:48:15,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:48:15,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:48:15,580 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 13:48:15,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:48:15,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:48:15,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:48:15,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:48:15,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:48:15,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:48:15,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:48:15,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:48:15,583 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:48:15,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:48:15,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:48:15,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:48:15,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:48:15,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:48:15,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:48:15,584 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_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-23 13:48:15,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:48:15,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:48:15,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:48:15,959 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:48:15,959 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:48:15,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-23 13:48:18,988 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:48:19,337 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:48:19,338 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-23 13:48:19,363 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/data/4c6e7907f/ff2b741f672348d8a827ede8cd15693c/FLAGd53863a00 [2022-11-23 13:48:19,386 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/data/4c6e7907f/ff2b741f672348d8a827ede8cd15693c [2022-11-23 13:48:19,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:48:19,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:48:19,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:48:19,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:48:19,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:48:19,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:19" (1/1) ... [2022-11-23 13:48:19,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395930e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:19, skipping insertion in model container [2022-11-23 13:48:19,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:19" (1/1) ... [2022-11-23 13:48:19,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:48:19,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:48:20,301 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_8bbcf62f-596e-4d03-8229-6c7c01c88da9/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-23 13:48:20,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:48:20,337 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:48:20,400 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_8bbcf62f-596e-4d03-8229-6c7c01c88da9/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-23 13:48:20,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:48:20,502 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:48:20,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20 WrapperNode [2022-11-23 13:48:20,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:48:20,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:48:20,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:48:20,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:48:20,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:20,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:20,691 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3797 [2022-11-23 13:48:20,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:48:20,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:48:20,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:48:20,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:48:20,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:20,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:20,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:20,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:20,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:20,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:20,952 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:20,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:21,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:48:21,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:48:21,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:48:21,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:48:21,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (1/1) ... [2022-11-23 13:48:21,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:48:21,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:21,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:48:21,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bbcf62f-596e-4d03-8229-6c7c01c88da9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:48:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 13:48:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:48:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 13:48:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:48:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:48:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:48:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-23 13:48:21,072 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-23 13:48:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-23 13:48:21,072 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-23 13:48:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-23 13:48:21,072 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-23 13:48:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:48:21,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:48:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:48:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:48:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:48:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:48:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-23 13:48:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-23 13:48:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-23 13:48:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-23 13:48:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-23 13:48:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-23 13:48:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-23 13:48:21,075 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-23 13:48:21,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:48:21,078 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 13:48:21,576 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:48:21,578 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:48:25,317 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:48:28,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:48:28,446 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 13:48:28,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:28 BoogieIcfgContainer [2022-11-23 13:48:28,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:48:28,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:48:28,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:48:28,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:48:28,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:48:19" (1/3) ... [2022-11-23 13:48:28,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5462168c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:28, skipping insertion in model container [2022-11-23 13:48:28,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:20" (2/3) ... [2022-11-23 13:48:28,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5462168c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:28, skipping insertion in model container [2022-11-23 13:48:28,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:28" (3/3) ... [2022-11-23 13:48:28,464 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-23 13:48:28,475 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 13:48:28,485 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:48:28,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2022-11-23 13:48:28,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 13:48:29,540 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 13:48:29,604 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:48:29,618 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2537 places, 2662 transitions, 5359 flow [2022-11-23 13:48:29,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2537 places, 2662 transitions, 5359 flow [2022-11-23 13:48:29,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2537 places, 2662 transitions, 5359 flow [2022-11-23 13:48:34,927 INFO L130 PetriNetUnfolder]: 147/2655 cut-off events. [2022-11-23 13:48:34,928 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 13:48:35,092 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. [2022-11-23 13:48:36,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 5686704 [2022-11-23 13:48:59,131 WARN L233 SmtUtils]: Spent 16.23s 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) [2022-11-23 13:49:07,185 WARN L233 SmtUtils]: Spent 8.05s 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) [2022-11-23 13:49:27,879 WARN L233 SmtUtils]: Spent 20.69s 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) [2022-11-23 13:49:38,660 WARN L233 SmtUtils]: Spent 10.78s 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) [2022-11-23 13:50:41,110 WARN L233 SmtUtils]: Spent 22.23s 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) [2022-11-23 13:50:51,839 WARN L233 SmtUtils]: Spent 10.73s 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) [2022-11-23 13:51:18,825 WARN L233 SmtUtils]: Spent 26.98s 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) [2022-11-23 13:51:32,855 WARN L233 SmtUtils]: Spent 14.02s 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) [2022-11-23 13:52:33,653 WARN L233 SmtUtils]: Spent 22.64s 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) [2022-11-23 13:52:46,954 WARN L233 SmtUtils]: Spent 13.30s 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) [2022-11-23 13:53:19,054 WARN L233 SmtUtils]: Spent 32.10s 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) [2022-11-23 13:53:32,638 WARN L233 SmtUtils]: Spent 13.58s 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) [2022-11-23 13:54:37,744 WARN L233 SmtUtils]: Spent 21.70s 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) [2022-11-23 13:54:48,454 WARN L233 SmtUtils]: Spent 10.71s 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) [2022-11-23 13:55:15,248 WARN L233 SmtUtils]: Spent 26.79s 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) [2022-11-23 13:55:28,324 WARN L233 SmtUtils]: Spent 13.07s 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) [2022-11-23 13:56:34,303 WARN L233 SmtUtils]: Spent 22.26s 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) [2022-11-23 13:56:44,481 WARN L233 SmtUtils]: Spent 10.18s 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) [2022-11-23 13:57:11,489 WARN L233 SmtUtils]: Spent 27.00s 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) [2022-11-23 13:57:25,742 WARN L233 SmtUtils]: Spent 14.25s 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) [2022-11-23 13:57:51,261 WARN L233 SmtUtils]: Spent 24.32s 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) [2022-11-23 13:58:02,902 WARN L233 SmtUtils]: Spent 11.64s 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) [2022-11-23 13:58:33,337 WARN L233 SmtUtils]: Spent 30.43s 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) [2022-11-23 13:58:47,347 WARN L233 SmtUtils]: Spent 14.01s 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) [2022-11-23 13:59:24,698 WARN L233 SmtUtils]: Spent 22.55s 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) [2022-11-23 13:59:35,039 WARN L233 SmtUtils]: Spent 10.34s 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) [2022-11-23 14:00:02,419 WARN L233 SmtUtils]: Spent 27.38s 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) [2022-11-23 14:00:15,405 WARN L233 SmtUtils]: Spent 12.98s 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) [2022-11-23 14:03:03,158 WARN L233 SmtUtils]: Spent 13.79s on a formula simplification that was a NOOP. DAG size: 301 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:03:16,563 WARN L233 SmtUtils]: Spent 13.40s on a formula simplification that was a NOOP. DAG size: 298 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)