./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl --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 f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:23:22,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:23:22,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:23:22,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:23:22,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:23:22,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:23:22,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:23:22,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:23:22,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:23:22,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:23:22,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:23:22,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:23:22,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:23:22,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:23:22,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:23:22,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:23:22,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:23:22,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:23:22,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:23:22,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:23:22,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:23:22,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:23:22,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:23:22,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:23:22,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:23:22,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:23:22,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:23:22,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:23:22,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:23:22,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:23:22,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:23:22,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:23:22,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:23:22,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:23:22,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:23:22,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:23:22,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:23:22,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:23:22,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:23:22,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:23:22,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:23:22,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:23:22,406 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:23:22,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:23:22,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:23:22,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:23:22,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:23:22,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:23:22,416 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:23:22,416 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:23:22,416 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:23:22,416 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:23:22,417 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:23:22,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:23:22,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:23:22,418 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:23:22,418 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:23:22,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:23:22,419 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:23:22,419 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:23:22,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:23:22,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:23:22,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:23:22,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:23:22,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:23:22,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:23:22,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:23:22,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:23:22,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:23:22,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:23:22,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:23:22,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:23:22,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:23:22,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:23:22,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:23:22,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:23:22,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:23:22,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:23:22,426 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:23:22,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:23:22,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:23:22,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:23:22,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:23:22,427 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 [2021-11-23 17:23:22,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:23:22,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:23:22,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:23:22,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:23:22,820 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:23:22,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-pthread/cs_stack-1.i [2021-11-23 17:23:22,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data/870731545/f775adfb81264fff973e8b4feaf714f7/FLAG60a19c136 [2021-11-23 17:23:23,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:23:23,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/sv-benchmarks/c/seq-pthread/cs_stack-1.i [2021-11-23 17:23:23,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data/870731545/f775adfb81264fff973e8b4feaf714f7/FLAG60a19c136 [2021-11-23 17:23:23,883 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data/870731545/f775adfb81264fff973e8b4feaf714f7 [2021-11-23 17:23:23,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:23:23,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:23:23,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:23:23,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:23:23,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:23:23,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:23:23" (1/1) ... [2021-11-23 17:23:23,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103b7eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:23, skipping insertion in model container [2021-11-23 17:23:23,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:23:23" (1/1) ... [2021-11-23 17:23:23,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:23:24,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:23:24,521 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_b456c75c-4096-455c-905a-46c60938f54b/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2021-11-23 17:23:24,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:23:24,651 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:23:24,714 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_b456c75c-4096-455c-905a-46c60938f54b/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2021-11-23 17:23:24,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:23:24,853 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:23:24,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24 WrapperNode [2021-11-23 17:23:24,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:23:24,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:23:24,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:23:24,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:23:24,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:24,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:25,020 INFO L137 Inliner]: procedures = 254, calls = 276, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 640 [2021-11-23 17:23:25,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:23:25,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:23:25,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:23:25,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:23:25,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:25,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:25,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:25,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:25,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:25,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:25,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:25,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:23:25,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:23:25,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:23:25,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:23:25,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:24" (1/1) ... [2021-11-23 17:23:25,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:23:25,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:23:25,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:23:25,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:23:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:23:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:23:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:23:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2021-11-23 17:23:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2021-11-23 17:23:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:23:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:23:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:23:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2021-11-23 17:23:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2021-11-23 17:23:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:23:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:23:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2021-11-23 17:23:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2021-11-23 17:23:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:23:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:23:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-11-23 17:23:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-11-23 17:23:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-11-23 17:23:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-11-23 17:23:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-23 17:23:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-23 17:23:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-23 17:23:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-23 17:23:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-11-23 17:23:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-11-23 17:23:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:23:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:23:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:23:25,482 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:23:25,484 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:23:25,557 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:25,558 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2021-11-23 17:23:25,587 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:25,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2021-11-23 17:23:25,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2021-11-23 17:23:25,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:25,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:25,589 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L933: SUMMARY for call __CS_cs(); srcloc: null [2021-11-23 17:23:25,589 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume 0 != ~__CS_ret~0 % 256; [2021-11-23 17:23:25,589 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:25,589 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2021-11-23 17:23:26,115 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:26,116 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2021-11-23 17:23:26,116 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:26,117 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-11-23 17:23:26,117 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:26,118 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-11-23 17:23:26,118 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:26,118 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-11-23 17:23:26,119 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-11-23 17:23:26,120 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2021-11-23 17:23:26,120 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: SUMMARY for call __CS_cs(); srcloc: null [2021-11-23 17:23:26,120 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2021-11-23 17:23:26,121 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 17:23:28,745 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:23:28,823 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:23:28,834 INFO L158 Benchmark]: Toolchain (without parser) took 4945.08ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 76.9MB in the beginning and 69.8MB in the end (delta: 7.1MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2021-11-23 17:23:28,839 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 47.4MB in the beginning and 47.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:23:28,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 959.13ms. Allocated memory is still 111.1MB. Free memory was 76.9MB in the beginning and 60.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 17:23:28,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 171.61ms. Allocated memory is still 111.1MB. Free memory was 60.6MB in the beginning and 56.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:23:28,843 INFO L158 Benchmark]: Boogie Preprocessor took 141.11ms. Allocated memory is still 111.1MB. Free memory was 55.6MB in the beginning and 83.9MB in the end (delta: -28.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2021-11-23 17:23:28,844 INFO L158 Benchmark]: RCFGBuilder took 3662.87ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 83.9MB in the beginning and 69.8MB in the end (delta: 14.1MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2021-11-23 17:23:28,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 47.4MB in the beginning and 47.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 959.13ms. Allocated memory is still 111.1MB. Free memory was 76.9MB in the beginning and 60.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 171.61ms. Allocated memory is still 111.1MB. Free memory was 60.6MB in the beginning and 56.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 141.11ms. Allocated memory is still 111.1MB. Free memory was 55.6MB in the beginning and 83.9MB in the end (delta: -28.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * RCFGBuilder took 3662.87ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 83.9MB in the beginning and 69.8MB in the end (delta: 14.1MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:23:28,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl --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 f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:23:31,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:23:31,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:23:31,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:23:31,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:23:31,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:23:31,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:23:31,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:23:31,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:23:31,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:23:31,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:23:31,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:23:31,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:23:31,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:23:31,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:23:31,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:23:31,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:23:31,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:23:31,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:23:31,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:23:31,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:23:31,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:23:31,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:23:31,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:23:31,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:23:31,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:23:31,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:23:31,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:23:31,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:23:31,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:23:31,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:23:31,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:23:31,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:23:31,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:23:31,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:23:31,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:23:31,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:23:31,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:23:31,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:23:31,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:23:31,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:23:31,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:23:31,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:23:31,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:23:31,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:23:31,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:23:31,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:23:31,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:23:31,920 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:23:31,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:23:31,920 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:23:31,921 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:23:31,921 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:23:31,921 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:23:31,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:23:31,922 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:23:31,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:23:31,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:23:31,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:23:31,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:23:31,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:23:31,924 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:23:31,924 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:23:31,925 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:23:31,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:23:31,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:23:31,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:23:31,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:23:31,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:23:31,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:23:31,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:23:31,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:23:31,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:23:31,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:23:31,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:23:31,928 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:23:31,928 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:23:31,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:23:31,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:23:31,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:23:31,929 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 [2021-11-23 17:23:32,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:23:32,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:23:32,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:23:32,346 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:23:32,347 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:23:32,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-pthread/cs_stack-1.i [2021-11-23 17:23:32,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data/d6ed663a8/40c824938a6c43c3bd7829150aaf33d5/FLAGd1d64161a [2021-11-23 17:23:33,114 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:23:33,116 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/sv-benchmarks/c/seq-pthread/cs_stack-1.i [2021-11-23 17:23:33,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data/d6ed663a8/40c824938a6c43c3bd7829150aaf33d5/FLAGd1d64161a [2021-11-23 17:23:33,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/data/d6ed663a8/40c824938a6c43c3bd7829150aaf33d5 [2021-11-23 17:23:33,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:23:33,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:23:33,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:23:33,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:23:33,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:23:33,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:23:33" (1/1) ... [2021-11-23 17:23:33,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f24f31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:33, skipping insertion in model container [2021-11-23 17:23:33,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:23:33" (1/1) ... [2021-11-23 17:23:33,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:23:33,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:23:34,073 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_b456c75c-4096-455c-905a-46c60938f54b/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2021-11-23 17:23:34,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:23:34,259 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:23:34,304 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_b456c75c-4096-455c-905a-46c60938f54b/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2021-11-23 17:23:34,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:23:34,557 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:23:34,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34 WrapperNode [2021-11-23 17:23:34,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:23:34,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:23:34,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:23:34,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:23:34,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,671 INFO L137 Inliner]: procedures = 258, calls = 276, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 627 [2021-11-23 17:23:34,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:23:34,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:23:34,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:23:34,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:23:34,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:23:34,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:23:34,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:23:34,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:23:34,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (1/1) ... [2021-11-23 17:23:34,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:23:34,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:23:34,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:23:34,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:23:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 17:23:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:23:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:23:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:23:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:23:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2021-11-23 17:23:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2021-11-23 17:23:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:23:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 17:23:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:23:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:23:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:23:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:23:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 17:23:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2021-11-23 17:23:34,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2021-11-23 17:23:34,942 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2021-11-23 17:23:34,943 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2021-11-23 17:23:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:23:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:23:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-11-23 17:23:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-11-23 17:23:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-11-23 17:23:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-11-23 17:23:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-23 17:23:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-23 17:23:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-23 17:23:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-23 17:23:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-11-23 17:23:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-11-23 17:23:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:23:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:23:35,196 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:23:35,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:23:35,308 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:35,309 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);#res := 0bv32; [2021-11-23 17:23:35,333 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:35,333 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2021-11-23 17:23:35,333 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2021-11-23 17:23:35,333 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:35,333 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:35,334 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L933: SUMMARY for call __CS_cs(); srcloc: null [2021-11-23 17:23:35,334 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2021-11-23 17:23:35,334 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:35,334 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2021-11-23 17:23:35,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:35,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);push_#res#1 := 0bv32; [2021-11-23 17:23:35,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:35,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2021-11-23 17:23:35,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:35,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2021-11-23 17:23:35,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:35,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2021-11-23 17:23:35,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2021-11-23 17:23:35,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0));pop_#res#1 := 0bv32; [2021-11-23 17:23:35,890 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: SUMMARY for call __CS_cs(); srcloc: null [2021-11-23 17:23:35,890 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);push_#res#1 := 0bv32; [2021-11-23 17:23:35,890 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-23 17:23:38,846 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:23:38,858 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:23:38,859 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 17:23:38,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:23:38 BoogieIcfgContainer [2021-11-23 17:23:38,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:23:38,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:23:38,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:23:38,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:23:38,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:23:33" (1/3) ... [2021-11-23 17:23:38,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cdca24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:23:38, skipping insertion in model container [2021-11-23 17:23:38,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:23:34" (2/3) ... [2021-11-23 17:23:38,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cdca24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:23:38, skipping insertion in model container [2021-11-23 17:23:38,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:23:38" (3/3) ... [2021-11-23 17:23:38,873 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-1.i [2021-11-23 17:23:38,880 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:23:38,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:23:38,963 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:23:38,970 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:23:38,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:23:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 142 states have (on average 1.528169014084507) internal successors, (217), 145 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-23 17:23:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 17:23:39,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:23:39,024 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:23:39,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:23:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:23:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2082055361, now seen corresponding path program 1 times [2021-11-23 17:23:39,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:23:39,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943912796] [2021-11-23 17:23:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:23:39,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:23:39,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:23:39,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:23:39,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:23:40,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:23:40,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:23:40,613 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:23:40,620 INFO L158 Benchmark]: Toolchain (without parser) took 7337.42ms. Allocated memory was 86.0MB in the beginning and 123.7MB in the end (delta: 37.7MB). Free memory was 50.2MB in the beginning and 72.4MB in the end (delta: -22.2MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2021-11-23 17:23:40,621 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 68.8MB in the beginning and 68.7MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:23:40,622 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1272.41ms. Allocated memory is still 86.0MB. Free memory was 50.0MB in the beginning and 60.5MB in the end (delta: -10.5MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-11-23 17:23:40,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.54ms. Allocated memory is still 86.0MB. Free memory was 60.5MB in the beginning and 55.7MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:23:40,630 INFO L158 Benchmark]: Boogie Preprocessor took 165.41ms. Allocated memory is still 86.0MB. Free memory was 55.7MB in the beginning and 51.1MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:23:40,632 INFO L158 Benchmark]: RCFGBuilder took 4023.30ms. Allocated memory was 86.0MB in the beginning and 123.7MB in the end (delta: 37.7MB). Free memory was 51.1MB in the beginning and 57.8MB in the end (delta: -6.7MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2021-11-23 17:23:40,632 INFO L158 Benchmark]: TraceAbstraction took 1753.05ms. Allocated memory is still 123.7MB. Free memory was 57.8MB in the beginning and 72.4MB in the end (delta: -14.6MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-11-23 17:23:40,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 68.8MB in the beginning and 68.7MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1272.41ms. Allocated memory is still 86.0MB. Free memory was 50.0MB in the beginning and 60.5MB in the end (delta: -10.5MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.54ms. Allocated memory is still 86.0MB. Free memory was 60.5MB in the beginning and 55.7MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 165.41ms. Allocated memory is still 86.0MB. Free memory was 55.7MB in the beginning and 51.1MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 4023.30ms. Allocated memory was 86.0MB in the beginning and 123.7MB in the end (delta: 37.7MB). Free memory was 51.1MB in the beginning and 57.8MB in the end (delta: -6.7MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1753.05ms. Allocated memory is still 123.7MB. Free memory was 57.8MB in the beginning and 72.4MB in the end (delta: -14.6MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:23:40,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b456c75c-4096-455c-905a-46c60938f54b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable