./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --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-e04fb08 [2022-11-16 19:57:54,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:57:54,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:57:54,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:57:54,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:57:54,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:57:54,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:57:54,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:57:54,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:57:54,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:57:54,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:57:54,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:57:54,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:57:54,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:57:54,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:57:54,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:57:54,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:57:54,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:57:54,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:57:54,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:57:54,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:57:54,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:57:54,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:57:54,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:57:54,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:57:54,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:57:54,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:57:54,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:57:54,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:57:54,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:57:54,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:57:54,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:57:54,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:57:54,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:57:54,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:57:54,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:57:54,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:57:54,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:57:54,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:57:54,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:57:54,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:57:54,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-16 19:57:54,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:57:54,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:57:54,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:57:54,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:57:54,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:57:54,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:57:54,615 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:57:54,615 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:57:54,615 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:57:54,616 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:57:54,617 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:57:54,617 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:57:54,618 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:57:54,618 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:57:54,618 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:57:54,619 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:57:54,619 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:57:54,619 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:57:54,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:57:54,620 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:57:54,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:57:54,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:57:54,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:57:54,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:57:54,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:57:54,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:57:54,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:57:54,623 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 19:57:54,623 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:57:54,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:57:54,624 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:57:54,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:57:54,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:57:54,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:57:54,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:57:54,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:57:54,626 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:57:54,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:57:54,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:57:54,627 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:57:54,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:57:54,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:57:54,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:57:54,628 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_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-16 19:57:55,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:57:55,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:57:55,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:57:55,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:57:55,044 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:57:55,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-16 19:57:55,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/data/eb290c5f1/cfd994b5aa004a61b5e9433191bdd22a/FLAG0f84ea8a4 [2022-11-16 19:57:55,739 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:57:55,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-16 19:57:55,773 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/data/eb290c5f1/cfd994b5aa004a61b5e9433191bdd22a/FLAG0f84ea8a4 [2022-11-16 19:57:55,985 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/data/eb290c5f1/cfd994b5aa004a61b5e9433191bdd22a [2022-11-16 19:57:55,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:57:55,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:57:55,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:57:55,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:57:55,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:57:55,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:57:55" (1/1) ... [2022-11-16 19:57:55,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e35669e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:55, skipping insertion in model container [2022-11-16 19:57:55,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:57:55" (1/1) ... [2022-11-16 19:57:56,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:57:56,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:57:56,939 WARN L229 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_5026d641-d21f-4cca-aeb3-9b6c15779f6c/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-16 19:57:56,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:57:56,997 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:57:57,091 WARN L229 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_5026d641-d21f-4cca-aeb3-9b6c15779f6c/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-16 19:57:57,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:57:57,251 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:57:57,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57 WrapperNode [2022-11-16 19:57:57,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:57:57,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:57:57,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:57:57,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:57:57,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:57,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:57,646 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 7542 [2022-11-16 19:57:57,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:57:57,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:57:57,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:57:57,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:57:57,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:57,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:57,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:57,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:58,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:58,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:58,364 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:58,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:58,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:57:58,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:57:58,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:57:58,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:57:58,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (1/1) ... [2022-11-16 19:57:58,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:57:58,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:58,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:57:58,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5026d641-d21f-4cca-aeb3-9b6c15779f6c/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:57:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 19:57:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:57:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 19:57:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:57:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:57:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:57:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-16 19:57:58,562 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-16 19:57:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-16 19:57:58,563 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-16 19:57:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-16 19:57:58,563 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-16 19:57:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:57:58,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:57:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:57:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:57:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 19:57:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:57:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-16 19:57:58,565 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-16 19:57:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-16 19:57:58,566 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-16 19:57:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-16 19:57:58,567 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-16 19:57:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-16 19:57:58,567 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-16 19:57:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:57:58,573 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 19:57:59,284 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:57:59,288 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:58:08,737 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:58:18,300 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:58:18,300 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 19:58:18,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:58:18 BoogieIcfgContainer [2022-11-16 19:58:18,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:58:18,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:58:18,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:58:18,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:58:18,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:57:55" (1/3) ... [2022-11-16 19:58:18,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b066676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:58:18, skipping insertion in model container [2022-11-16 19:58:18,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:57" (2/3) ... [2022-11-16 19:58:18,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b066676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:58:18, skipping insertion in model container [2022-11-16 19:58:18,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:58:18" (3/3) ... [2022-11-16 19:58:18,325 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-16 19:58:18,337 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 19:58:18,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:58:18,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 621 error locations. [2022-11-16 19:58:18,351 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 19:58:20,895 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 19:58:20,992 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:58:21,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 4628 places, 4753 transitions, 9541 flow [2022-11-16 19:58:21,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 4628 places, 4753 transitions, 9541 flow [2022-11-16 19:58:21,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 4628 places, 4753 transitions, 9541 flow [2022-11-16 19:58:38,915 INFO L130 PetriNetUnfolder]: 147/4746 cut-off events. [2022-11-16 19:58:38,915 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 19:58:39,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 4746 events. 147/4746 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 36100 event pairs, 0 based on Foata normal form. 0/3978 useless extension candidates. Maximal degree in co-relation 4682. Up to 6 conditions per place. [2022-11-16 19:58:46,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 18597588 [2022-11-16 20:02:34,440 WARN L233 SmtUtils]: Spent 3.52m on a formula simplification. DAG size of input: 218 DAG size of output: 203 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 20:04:17,790 WARN L233 SmtUtils]: Spent 1.72m on a formula simplification that was a NOOP. DAG size: 203 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 20:08:41,083 WARN L233 SmtUtils]: Spent 4.39m on a formula simplification. DAG size of input: 239 DAG size of output: 210 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 20:10:58,109 WARN L233 SmtUtils]: Spent 2.28m on a formula simplification that was a NOOP. DAG size: 210 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)