./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P --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 0cdac738a6686958f2bf9395cbd2de35d90af6cad794e5c654284b73ac8b3868 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:46:46,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:46:46,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:46:46,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:46:46,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:46:46,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:46:46,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:46:46,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:46:46,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:46:46,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:46:46,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:46:46,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:46:46,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:46:46,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:46:46,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:46:46,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:46:46,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:46:46,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:46:46,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:46:46,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:46:46,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:46:46,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:46:46,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:46:46,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:46:46,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:46:46,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:46:46,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:46:46,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:46:46,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:46:46,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:46:46,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:46:46,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:46:46,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:46:46,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:46:46,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:46:46,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:46:46,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:46:46,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:46:46,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:46:46,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:46:46,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:46:46,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:46:46,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:46:46,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:46:46,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:46:46,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:46:46,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:46:46,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:46:46,589 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:46:46,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:46:46,590 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:46:46,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:46:46,592 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:46:46,592 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:46:46,593 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:46:46,593 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:46:46,593 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:46:46,594 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:46:46,594 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:46:46,594 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:46:46,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:46:46,596 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:46:46,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:46:46,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:46:46,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:46:46,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:46:46,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:46:46,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:46:46,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:46:46,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:46:46,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:46:46,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:46:46,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:46:46,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:46:46,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:46:46,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:46:46,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:46:46,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:46:46,603 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:46:46,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:46:46,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:46:46,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:46:46,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:46:46,605 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_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdac738a6686958f2bf9395cbd2de35d90af6cad794e5c654284b73ac8b3868 [2021-11-21 00:46:46,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:46:46,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:46:47,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:46:47,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:46:47,003 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:46:47,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i [2021-11-21 00:46:47,088 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data/3a1edd486/3361e97b62a34d57a205216c4b66e64a/FLAGa0b1835b2 [2021-11-21 00:46:47,613 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:46:47,613 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i [2021-11-21 00:46:47,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data/3a1edd486/3361e97b62a34d57a205216c4b66e64a/FLAGa0b1835b2 [2021-11-21 00:46:47,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data/3a1edd486/3361e97b62a34d57a205216c4b66e64a [2021-11-21 00:46:47,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:46:47,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:46:47,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:46:47,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:46:47,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:46:47,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:46:47" (1/1) ... [2021-11-21 00:46:47,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54118e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:47, skipping insertion in model container [2021-11-21 00:46:47,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:46:47" (1/1) ... [2021-11-21 00:46:48,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:46:48,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:46:48,337 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_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[1226,1239] [2021-11-21 00:46:48,400 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_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[2786,2799] [2021-11-21 00:46:48,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:46:48,416 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:46:48,441 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_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[1226,1239] [2021-11-21 00:46:48,473 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_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[2786,2799] [2021-11-21 00:46:48,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:46:48,499 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:46:48,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48 WrapperNode [2021-11-21 00:46:48,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:46:48,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:46:48,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:46:48,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:46:48,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,567 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-21 00:46:48,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:46:48,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:46:48,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:46:48,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:46:48,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:46:48,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:46:48,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:46:48,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:46:48,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (1/1) ... [2021-11-21 00:46:48,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:46:48,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:46:48,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:46:48,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:46:48,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:46:48,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:46:48,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:46:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:46:48,834 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:46:48,836 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:46:49,109 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:46:49,210 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:46:49,210 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:46:49,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:46:49 BoogieIcfgContainer [2021-11-21 00:46:49,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:46:49,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:46:49,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:46:49,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:46:49,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:46:47" (1/3) ... [2021-11-21 00:46:49,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7947ebcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:46:49, skipping insertion in model container [2021-11-21 00:46:49,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:48" (2/3) ... [2021-11-21 00:46:49,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7947ebcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:46:49, skipping insertion in model container [2021-11-21 00:46:49,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:46:49" (3/3) ... [2021-11-21 00:46:49,224 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_6.i [2021-11-21 00:46:49,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:46:49,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:46:49,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:46:49,298 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 [2021-11-21 00:46:49,298 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:46:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-11-21 00:46:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:46:49,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:49,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:46:49,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:46:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:49,331 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-21 00:46:49,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:49,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736203425] [2021-11-21 00:46:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:49,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:46:49,473 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:46:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:46:49,514 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:46:49,516 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:46:49,518 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 00:46:49,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 00:46:49,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:46:49,527 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 00:46:49,531 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:46:49,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:46:49 BoogieIcfgContainer [2021-11-21 00:46:49,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:46:49,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:46:49,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:46:49,558 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:46:49,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:46:49" (3/4) ... [2021-11-21 00:46:49,563 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:46:49,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:46:49,565 INFO L158 Benchmark]: Toolchain (without parser) took 1580.41ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 53.6MB in the beginning and 70.6MB in the end (delta: -16.9MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-21 00:46:49,566 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:46:49,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.55ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 53.4MB in the beginning and 100.6MB in the end (delta: -47.2MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-11-21 00:46:49,568 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.45ms. Allocated memory is still 125.8MB. Free memory was 100.6MB in the beginning and 98.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:46:49,569 INFO L158 Benchmark]: Boogie Preprocessor took 61.21ms. Allocated memory is still 125.8MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:46:49,570 INFO L158 Benchmark]: RCFGBuilder took 583.33ms. Allocated memory is still 125.8MB. Free memory was 97.5MB in the beginning and 84.7MB in the end (delta: 12.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-21 00:46:49,571 INFO L158 Benchmark]: TraceAbstraction took 340.74ms. Allocated memory is still 125.8MB. Free memory was 84.2MB in the beginning and 70.8MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:46:49,571 INFO L158 Benchmark]: Witness Printer took 5.75ms. Allocated memory is still 125.8MB. Free memory was 70.8MB in the beginning and 70.6MB in the end (delta: 256.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:46:49,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.55ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 53.4MB in the beginning and 100.6MB in the end (delta: -47.2MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.45ms. Allocated memory is still 125.8MB. Free memory was 100.6MB in the beginning and 98.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.21ms. Allocated memory is still 125.8MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 583.33ms. Allocated memory is still 125.8MB. Free memory was 97.5MB in the beginning and 84.7MB in the end (delta: 12.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 340.74ms. Allocated memory is still 125.8MB. Free memory was 84.2MB in the beginning and 70.8MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.75ms. Allocated memory is still 125.8MB. Free memory was 70.8MB in the beginning and 70.6MB in the end (delta: 256.2kB). There was no memory consumed. 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 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [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; [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; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces [2021-11-21 00:46:49,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/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_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P --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 0cdac738a6686958f2bf9395cbd2de35d90af6cad794e5c654284b73ac8b3868 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:46:52,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:46:52,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:46:52,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:46:52,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:46:52,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:46:52,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:46:52,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:46:52,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:46:52,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:46:52,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:46:52,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:46:52,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:46:52,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:46:52,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:46:52,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:46:52,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:46:52,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:46:52,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:46:52,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:46:52,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:46:52,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:46:52,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:46:52,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:46:52,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:46:52,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:46:52,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:46:52,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:46:52,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:46:52,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:46:52,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:46:52,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:46:52,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:46:52,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:46:52,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:46:52,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:46:52,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:46:52,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:46:52,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:46:52,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:46:52,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:46:52,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 00:46:52,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:46:52,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:46:52,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:46:52,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:46:52,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:46:52,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:46:52,736 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:46:52,736 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:46:52,736 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:46:52,737 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:46:52,737 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:46:52,737 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:46:52,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:46:52,739 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:46:52,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:46:52,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:46:52,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:46:52,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:46:52,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:46:52,740 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:46:52,741 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:46:52,741 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:46:52,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:46:52,741 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:46:52,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:46:52,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:46:52,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:46:52,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:46:52,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:46:52,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:46:52,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:46:52,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:46:52,744 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:46:52,744 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:46:52,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:46:52,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:46:52,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:46:52,746 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_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdac738a6686958f2bf9395cbd2de35d90af6cad794e5c654284b73ac8b3868 [2021-11-21 00:46:53,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:46:53,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:46:53,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:46:53,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:46:53,262 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:46:53,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i [2021-11-21 00:46:53,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data/8fc61c12c/8d7ff72d0d2a48f5bb260a79b02d54e4/FLAG8adaed405 [2021-11-21 00:46:53,944 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:46:53,948 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i [2021-11-21 00:46:53,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data/8fc61c12c/8d7ff72d0d2a48f5bb260a79b02d54e4/FLAG8adaed405 [2021-11-21 00:46:54,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/data/8fc61c12c/8d7ff72d0d2a48f5bb260a79b02d54e4 [2021-11-21 00:46:54,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:46:54,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:46:54,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:46:54,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:46:54,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:46:54,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7192027d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54, skipping insertion in model container [2021-11-21 00:46:54,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:46:54,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:46:54,531 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_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[1226,1239] [2021-11-21 00:46:54,565 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_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[2786,2799] [2021-11-21 00:46:54,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:46:54,582 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:46:54,597 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_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[1226,1239] [2021-11-21 00:46:54,622 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_9a98115d-3437-4b92-89be-797451331354/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[2786,2799] [2021-11-21 00:46:54,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:46:54,647 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:46:54,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54 WrapperNode [2021-11-21 00:46:54,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:46:54,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:46:54,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:46:54,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:46:54,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,731 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-21 00:46:54,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:46:54,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:46:54,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:46:54,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:46:54,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:46:54,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:46:54,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:46:54,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:46:54,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (1/1) ... [2021-11-21 00:46:54,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:46:54,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:46:54,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:46:54,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:46:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:46:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:46:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:46:54,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:46:55,028 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:46:55,030 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:47:01,865 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:47:01,872 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:47:01,873 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:47:01,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:47:01 BoogieIcfgContainer [2021-11-21 00:47:01,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:47:01,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:47:01,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:47:01,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:47:01,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:46:54" (1/3) ... [2021-11-21 00:47:01,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b558e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:47:01, skipping insertion in model container [2021-11-21 00:47:01,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:46:54" (2/3) ... [2021-11-21 00:47:01,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b558e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:47:01, skipping insertion in model container [2021-11-21 00:47:01,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:47:01" (3/3) ... [2021-11-21 00:47:01,907 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_6.i [2021-11-21 00:47:01,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:47:01,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:47:01,997 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:47:02,004 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 [2021-11-21 00:47:02,004 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:47:02,019 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) [2021-11-21 00:47:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:47:02,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:47:02,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:47:02,028 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:47:02,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:47:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-21 00:47:02,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:47:02,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382260856] [2021-11-21 00:47:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:47:02,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:47:02,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:47:02,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:47:02,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:47:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:47:03,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 00:47:03,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:47:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:03,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:47:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:03,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:47:03,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382260856] [2021-11-21 00:47:03,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382260856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:47:03,898 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:47:03,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:47:03,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992124904] [2021-11-21 00:47:03,901 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:47:03,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:47:03,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:47:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:47:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:47:03,936 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) [2021-11-21 00:47:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:47:03,955 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-21 00:47:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:47:03,958 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 [2021-11-21 00:47:03,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:47:03,967 INFO L225 Difference]: With dead ends: 46 [2021-11-21 00:47:03,968 INFO L226 Difference]: Without dead ends: 19 [2021-11-21 00:47:03,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:47:03,976 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 [2021-11-21 00:47:03,978 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] [2021-11-21 00:47:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-21 00:47:04,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-21 00:47:04,008 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) [2021-11-21 00:47:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-21 00:47:04,010 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-21 00:47:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:47:04,011 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-21 00:47:04,011 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) [2021-11-21 00:47:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-21 00:47:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:47:04,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:47:04,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:47:04,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 00:47:04,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:47:04,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:47:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:47:04,215 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-21 00:47:04,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:47:04,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628553200] [2021-11-21 00:47:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:47:04,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:47:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:47:04,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:47:04,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:47:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:47:11,726 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:47:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:47:26,692 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 00:47:26,692 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:47:26,695 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 00:47:26,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 00:47:26,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:47:26,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:47:26,903 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 00:47:26,907 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:47:26,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:47:26 BoogieIcfgContainer [2021-11-21 00:47:26,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:47:26,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:47:26,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:47:26,969 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:47:26,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:47:01" (3/4) ... [2021-11-21 00:47:26,972 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 00:47:27,016 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:47:27,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:47:27,018 INFO L158 Benchmark]: Toolchain (without parser) took 32735.59ms. Allocated memory is still 71.3MB. Free memory was 34.7MB in the beginning and 51.0MB in the end (delta: -16.4MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-11-21 00:47:27,019 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 71.3MB. Free memory was 51.0MB in the beginning and 50.9MB in the end (delta: 67.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:47:27,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.66ms. Allocated memory is still 71.3MB. Free memory was 34.5MB in the beginning and 44.3MB in the end (delta: -9.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 00:47:27,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.83ms. Allocated memory is still 71.3MB. Free memory was 44.3MB in the beginning and 42.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:47:27,021 INFO L158 Benchmark]: Boogie Preprocessor took 77.61ms. Allocated memory is still 71.3MB. Free memory was 42.5MB in the beginning and 41.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:47:27,022 INFO L158 Benchmark]: RCFGBuilder took 7063.72ms. Allocated memory is still 71.3MB. Free memory was 41.1MB in the beginning and 30.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:47:27,022 INFO L158 Benchmark]: TraceAbstraction took 25061.92ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 28.4MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-21 00:47:27,023 INFO L158 Benchmark]: Witness Printer took 63.57ms. Allocated memory is still 71.3MB. Free memory was 28.4MB in the beginning and 51.0MB in the end (delta: -22.7MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2021-11-21 00:47:27,027 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 71.3MB. Free memory was 51.0MB in the beginning and 50.9MB in the end (delta: 67.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.66ms. Allocated memory is still 71.3MB. Free memory was 34.5MB in the beginning and 44.3MB in the end (delta: -9.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.83ms. Allocated memory is still 71.3MB. Free memory was 44.3MB in the beginning and 42.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.61ms. Allocated memory is still 71.3MB. Free memory was 42.5MB in the beginning and 41.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 7063.72ms. Allocated memory is still 71.3MB. Free memory was 41.1MB in the beginning and 30.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 25061.92ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 28.4MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 63.57ms. Allocated memory is still 71.3MB. Free memory was 28.4MB in the beginning and 51.0MB in the end (delta: -22.7MB). Peak memory consumption was 4.7MB. 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 > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [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)=-0.9217368364334106, \result=-0.7968756556510925, x=-0.9217368364334106] [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)=-0.9217368364334106, \result=0.6061280369758606, x=-0.9217368364334106] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.9217368364334106, x=0.3929617404937744] [L102] reach_error() VAL [IN=-0.9217368364334106, x=0.3929617404937744] - 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: 24.9s, 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, 16 GetRequests, 16 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, 9.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-11-21 00:47:27,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a98115d-3437-4b92-89be-797451331354/bin/utaipan-TEXQjIfE4P/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE