./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_1_8.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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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 5ae61279460707eb31ef5192dbacafd71ee43f81800041bfc80550692238d3f1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:18:25,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:18:25,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:18:25,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:18:25,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:18:25,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:18:25,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:18:25,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:18:25,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:18:25,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:18:25,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:18:25,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:18:25,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:18:25,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:18:25,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:18:25,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:18:25,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:18:25,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:18:25,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:18:25,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:18:25,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:18:25,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:18:25,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:18:25,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:18:25,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:18:25,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:18:25,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:18:25,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:18:25,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:18:25,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:18:25,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:18:25,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:18:25,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:18:25,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:18:25,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:18:25,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:18:25,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:18:25,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:18:25,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:18:25,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:18:25,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:18:25,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:18:25,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:18:25,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:18:25,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:18:25,549 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:18:25,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:18:25,550 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:18:25,551 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:18:25,551 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:18:25,551 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:18:25,552 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:18:25,552 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:18:25,552 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:18:25,553 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:18:25,553 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:18:25,560 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:18:25,560 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:18:25,561 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:18:25,561 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:18:25,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:18:25,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:18:25,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:18:25,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:18:25,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:18:25,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:18:25,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:18:25,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:18:25,567 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:18:25,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:18:25,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:18:25,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:18:25,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:18:25,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:18:25,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:18:25,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:18:25,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:18:25,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:18:25,572 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:18:25,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:18:25,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:18:25,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:18:25,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:18:25,573 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ae61279460707eb31ef5192dbacafd71ee43f81800041bfc80550692238d3f1 [2021-11-23 17:18:25,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:18:25,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:18:25,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:18:25,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:18:25,907 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:18:25,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/gcd_1+newton_1_8.i [2021-11-23 17:18:25,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data/ee3db7f6d/7050eef27b2841c5ad75f319dbed122f/FLAGb02cde79e [2021-11-23 17:18:26,507 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:18:26,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i [2021-11-23 17:18:26,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data/ee3db7f6d/7050eef27b2841c5ad75f319dbed122f/FLAGb02cde79e [2021-11-23 17:18:26,894 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data/ee3db7f6d/7050eef27b2841c5ad75f319dbed122f [2021-11-23 17:18:26,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:18:26,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:18:26,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:18:26,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:18:26,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:18:26,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:18:26" (1/1) ... [2021-11-23 17:18:26,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb46ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:26, skipping insertion in model container [2021-11-23 17:18:26,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:18:26" (1/1) ... [2021-11-23 17:18:26,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:18:26,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:18:27,186 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i[1226,1239] [2021-11-23 17:18:27,256 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i[2786,2799] [2021-11-23 17:18:27,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:18:27,289 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:18:27,324 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i[1226,1239] [2021-11-23 17:18:27,342 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i[2786,2799] [2021-11-23 17:18:27,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:18:27,371 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:18:27,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27 WrapperNode [2021-11-23 17:18:27,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:18:27,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:18:27,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:18:27,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:18:27,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,453 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-23 17:18:27,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:18:27,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:18:27,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:18:27,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:18:27,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:18:27,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:18:27,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:18:27,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:18:27,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:27" (1/1) ... [2021-11-23 17:18:27,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:18:27,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:18:27,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:18:27,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:18:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:18:27,711 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:18:27,712 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:18:27,929 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:18:27,971 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 17:18:27,976 INFO L158 Benchmark]: Toolchain (without parser) took 1076.03ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 40.5MB in the beginning and 78.4MB in the end (delta: -37.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:18:27,977 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory was 57.3MB in the beginning and 57.1MB in the end (delta: 138.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:18:27,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.70ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 40.4MB in the beginning and 93.1MB in the end (delta: -52.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-11-23 17:18:27,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.23ms. Allocated memory is still 119.5MB. Free memory was 93.1MB in the beginning and 91.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:18:27,990 INFO L158 Benchmark]: Boogie Preprocessor took 48.01ms. Allocated memory is still 119.5MB. Free memory was 91.6MB in the beginning and 90.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:18:27,991 INFO L158 Benchmark]: RCFGBuilder took 470.76ms. Allocated memory is still 119.5MB. Free memory was 90.3MB in the beginning and 78.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:18:28,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory was 57.3MB in the beginning and 57.1MB in the end (delta: 138.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.70ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 40.4MB in the beginning and 93.1MB in the end (delta: -52.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.23ms. Allocated memory is still 119.5MB. Free memory was 93.1MB in the beginning and 91.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.01ms. Allocated memory is still 119.5MB. Free memory was 91.6MB in the beginning and 90.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 470.76ms. Allocated memory is still 119.5MB. Free memory was 90.3MB in the beginning and 78.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. 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 17:18:28,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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 5ae61279460707eb31ef5192dbacafd71ee43f81800041bfc80550692238d3f1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:18:31,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:18:31,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:18:31,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:18:31,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:18:31,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:18:31,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:18:31,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:18:31,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:18:31,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:18:31,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:18:31,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:18:31,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:18:31,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:18:31,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:18:31,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:18:31,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:18:31,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:18:31,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:18:31,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:18:31,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:18:31,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:18:31,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:18:31,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:18:31,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:18:31,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:18:31,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:18:31,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:18:31,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:18:31,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:18:31,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:18:31,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:18:31,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:18:31,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:18:31,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:18:31,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:18:31,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:18:31,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:18:31,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:18:31,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:18:31,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:18:31,313 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:18:31,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:18:31,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:18:31,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:18:31,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:18:31,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:18:31,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:18:31,374 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:18:31,375 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:18:31,375 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:18:31,375 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:18:31,377 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:18:31,377 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:18:31,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:18:31,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:18:31,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:18:31,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:18:31,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:18:31,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:18:31,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:18:31,382 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:18:31,382 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:18:31,382 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:18:31,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:18:31,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:18:31,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:18:31,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:18:31,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:18:31,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:18:31,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:18:31,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:18:31,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:18:31,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:18:31,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:18:31,386 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:18:31,387 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:18:31,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:18:31,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:18:31,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:18:31,388 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ae61279460707eb31ef5192dbacafd71ee43f81800041bfc80550692238d3f1 [2021-11-23 17:18:31,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:18:31,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:18:31,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:18:31,887 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:18:31,888 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:18:31,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/gcd_1+newton_1_8.i [2021-11-23 17:18:31,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data/258ff6f80/8e04f43f5aa440f69a1c89ca4f223ccd/FLAG60fe16496 [2021-11-23 17:18:32,617 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:18:32,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i [2021-11-23 17:18:32,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data/258ff6f80/8e04f43f5aa440f69a1c89ca4f223ccd/FLAG60fe16496 [2021-11-23 17:18:32,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/data/258ff6f80/8e04f43f5aa440f69a1c89ca4f223ccd [2021-11-23 17:18:32,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:18:32,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:18:32,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:18:33,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:18:33,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:18:33,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:18:32" (1/1) ... [2021-11-23 17:18:33,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283039d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33, skipping insertion in model container [2021-11-23 17:18:33,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:18:32" (1/1) ... [2021-11-23 17:18:33,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:18:33,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:18:33,260 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i[1226,1239] [2021-11-23 17:18:33,324 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i[2786,2799] [2021-11-23 17:18:33,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:18:33,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:18:33,428 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i[1226,1239] [2021-11-23 17:18:33,461 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_e8954567-1af1-4ec0-b3d7-8eed28efbd56/sv-benchmarks/c/combinations/gcd_1+newton_1_8.i[2786,2799] [2021-11-23 17:18:33,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:18:33,494 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:18:33,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33 WrapperNode [2021-11-23 17:18:33,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:18:33,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:18:33,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:18:33,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:18:33,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,577 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-23 17:18:33,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:18:33,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:18:33,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:18:33,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:18:33,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:18:33,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:18:33,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:18:33,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:18:33,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (1/1) ... [2021-11-23 17:18:33,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:18:33,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:18:33,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:18:33,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:18:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:18:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:18:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:18:33,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:18:33,843 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:18:33,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:18:40,846 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:18:40,854 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:18:40,854 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:18:40,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:18:40 BoogieIcfgContainer [2021-11-23 17:18:40,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:18:40,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:18:40,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:18:40,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:18:40,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:18:32" (1/3) ... [2021-11-23 17:18:40,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c781d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:18:40, skipping insertion in model container [2021-11-23 17:18:40,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:33" (2/3) ... [2021-11-23 17:18:40,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c781d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:18:40, skipping insertion in model container [2021-11-23 17:18:40,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:18:40" (3/3) ... [2021-11-23 17:18:40,867 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_8.i [2021-11-23 17:18:40,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:18:40,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:18:40,937 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:18:40,946 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 17:18:40,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:18:40,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:18:40,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 17:18:40,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:18:40,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:18:40,974 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:18:40,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:18:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-23 17:18:40,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:18:40,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196655961] [2021-11-23 17:18:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:18:40,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:18:41,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:18:41,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:18:41,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:18:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:18:42,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 17:18:42,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:18:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:18:42,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:18:42,706 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:18:42,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196655961] [2021-11-23 17:18:42,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196655961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:18:42,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:18:42,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:18:42,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350161238] [2021-11-23 17:18:42,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:18:42,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 17:18:42,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:18:42,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 17:18:42,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:18:42,757 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:18:42,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:18:42,778 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-23 17:18:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 17:18:42,781 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 17:18:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:18:42,791 INFO L225 Difference]: With dead ends: 46 [2021-11-23 17:18:42,792 INFO L226 Difference]: Without dead ends: 19 [2021-11-23 17:18:42,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:18:42,800 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:18:42,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:18:42,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-23 17:18:42,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-23 17:18:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:18:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-23 17:18:42,843 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-23 17:18:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:18:42,844 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-23 17:18:42,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:18:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-23 17:18:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 17:18:42,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:18:42,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:18:42,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:18:43,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:18:43,064 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:18:43,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:18:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-23 17:18:43,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:18:43,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217816842] [2021-11-23 17:18:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:18:43,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:18:43,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:18:43,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:18:43,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:18:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:18:47,593 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 17:18:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:18:54,513 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 17:18:54,514 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 17:18:54,516 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 17:18:54,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 17:18:54,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:18:54,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:18:54,727 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 17:18:54,730 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 17:18:54,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:18:54 BoogieIcfgContainer [2021-11-23 17:18:54,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 17:18:54,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 17:18:54,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 17:18:54,781 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 17:18:54,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:18:40" (3/4) ... [2021-11-23 17:18:54,784 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 17:18:54,859 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 17:18:54,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 17:18:54,868 INFO L158 Benchmark]: Toolchain (without parser) took 21871.32ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 44.8MB in the beginning and 53.1MB in the end (delta: -8.4MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-11-23 17:18:54,870 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 65.0MB. Free memory is still 45.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:18:54,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.06ms. Allocated memory is still 65.0MB. Free memory was 44.6MB in the beginning and 47.4MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:18:54,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.51ms. Allocated memory is still 65.0MB. Free memory was 47.4MB in the beginning and 45.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:18:54,874 INFO L158 Benchmark]: Boogie Preprocessor took 74.10ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 44.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:18:54,874 INFO L158 Benchmark]: RCFGBuilder took 7202.08ms. Allocated memory is still 65.0MB. Free memory was 43.9MB in the beginning and 33.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:18:54,875 INFO L158 Benchmark]: TraceAbstraction took 13921.11ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 33.2MB in the beginning and 54.8MB in the end (delta: -21.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:18:54,876 INFO L158 Benchmark]: Witness Printer took 86.39ms. Allocated memory is still 88.1MB. Free memory was 54.8MB in the beginning and 53.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:18:54,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 65.0MB. Free memory is still 45.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 497.06ms. Allocated memory is still 65.0MB. Free memory was 44.6MB in the beginning and 47.4MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.51ms. Allocated memory is still 65.0MB. Free memory was 47.4MB in the beginning and 45.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 74.10ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 44.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7202.08ms. Allocated memory is still 65.0MB. Free memory was 43.9MB in the beginning and 33.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13921.11ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 33.2MB in the beginning and 54.8MB in the end (delta: -21.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Witness Printer took 86.39ms. Allocated memory is still 88.1MB. Free memory was 54.8MB in the beginning and 53.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=1.6961736679077148, \result=1.0078669786453247, x=1.6961736679077148] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=1.6961736679077148, \result=-0.06054672226309776, x=1.6961736679077148] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=1.6961736679077148, x=18.34227752685547] [L102] reach_error() VAL [IN=1.6961736679077148, x=18.34227752685547] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 13.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 17:18:55,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8954567-1af1-4ec0-b3d7-8eed28efbd56/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE