./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.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_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/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_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/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_0962f5b9-1203-4370-9e52-c5f27fca49cd/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 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:34:27,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:34:27,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:34:27,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:34:27,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:34:27,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:34:27,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:34:27,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:34:27,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:34:27,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:34:27,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:34:27,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:34:27,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:34:27,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:34:27,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:34:27,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:34:27,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:34:27,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:34:27,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:34:27,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:34:27,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:34:27,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:34:27,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:34:27,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:34:27,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:34:27,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:34:27,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:34:27,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:34:27,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:34:27,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:34:27,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:34:27,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:34:27,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:34:27,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:34:27,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:34:27,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:34:27,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:34:27,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:34:27,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:34:27,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:34:27,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:34:27,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:34:27,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:34:27,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:34:27,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:34:27,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:34:27,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:34:27,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:34:27,789 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:34:27,789 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:34:27,789 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:34:27,789 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:34:27,790 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:34:27,791 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:34:27,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:34:27,791 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:34:27,791 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:34:27,792 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:34:27,792 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:34:27,792 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:34:27,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:34:27,794 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:34:27,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:34:27,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:34:27,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:34:27,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:34:27,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:34:27,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:34:27,796 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:34:27,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:34:27,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:34:27,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:34:27,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:34:27,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:34:27,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:34:27,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:34:27,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:34:27,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:34:27,798 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:34:27,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:34:27,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:34:27,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:34:27,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:34:27,799 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee [2021-11-21 00:34:28,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:34:28,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:34:28,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:34:28,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:34:28,089 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:34:28,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2021-11-21 00:34:28,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data/0c8579069/dcc75150c9ab42fcba5e968c71bb85a9/FLAGe7ad0f712 [2021-11-21 00:34:28,624 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:34:28,625 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2021-11-21 00:34:28,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data/0c8579069/dcc75150c9ab42fcba5e968c71bb85a9/FLAGe7ad0f712 [2021-11-21 00:34:29,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data/0c8579069/dcc75150c9ab42fcba5e968c71bb85a9 [2021-11-21 00:34:29,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:34:29,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:34:29,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:34:29,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:34:29,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:34:29,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6248fcb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29, skipping insertion in model container [2021-11-21 00:34:29,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:34:29,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:34:29,260 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[1226,1239] [2021-11-21 00:34:29,287 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[2820,2833] [2021-11-21 00:34:29,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:34:29,297 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:34:29,310 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[1226,1239] [2021-11-21 00:34:29,322 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[2820,2833] [2021-11-21 00:34:29,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:34:29,338 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:34:29,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29 WrapperNode [2021-11-21 00:34:29,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:34:29,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:34:29,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:34:29,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:34:29,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,414 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-21 00:34:29,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:34:29,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:34:29,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:34:29,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:34:29,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:34:29,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:34:29,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:34:29,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:34:29,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (1/1) ... [2021-11-21 00:34:29,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:34:29,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:34:29,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:34:29,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:34:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:34:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:34:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:34:29,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:34:29,620 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:34:29,622 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:34:29,783 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:34:29,834 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:34:29,835 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:34:29,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:29 BoogieIcfgContainer [2021-11-21 00:34:29,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:34:29,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:34:29,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:34:29,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:34:29,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:34:29" (1/3) ... [2021-11-21 00:34:29,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbc831c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:34:29, skipping insertion in model container [2021-11-21 00:34:29,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:29" (2/3) ... [2021-11-21 00:34:29,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbc831c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:34:29, skipping insertion in model container [2021-11-21 00:34:29,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:29" (3/3) ... [2021-11-21 00:34:29,846 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_4.i [2021-11-21 00:34:29,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:34:29,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:34:29,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:34:29,911 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 00:34:29,912 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:34:29,926 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 00:34:29,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:34:29,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:29,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:34:29,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:34:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:29,938 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-21 00:34:29,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:29,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504015834] [2021-11-21 00:34:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:29,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:34:30,040 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:34:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:34:30,071 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:34:30,073 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:34:30,075 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 00:34:30,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 00:34:30,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:34:30,082 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 00:34:30,085 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:34:30,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:34:30 BoogieIcfgContainer [2021-11-21 00:34:30,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:34:30,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:34:30,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:34:30,116 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:34:30,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:29" (3/4) ... [2021-11-21 00:34:30,119 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:34:30,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:34:30,123 INFO L158 Benchmark]: Toolchain (without parser) took 1095.86ms. Allocated memory was 107.0MB in the beginning and 134.2MB in the end (delta: 27.3MB). Free memory was 75.6MB in the beginning and 78.1MB in the end (delta: -2.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2021-11-21 00:34:30,123 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory was 60.7MB in the beginning and 60.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:34:30,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.06ms. Allocated memory was 107.0MB in the beginning and 134.2MB in the end (delta: 27.3MB). Free memory was 75.3MB in the beginning and 107.4MB in the end (delta: -32.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 00:34:30,126 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.48ms. Allocated memory is still 134.2MB. Free memory was 107.4MB in the beginning and 105.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:34:30,131 INFO L158 Benchmark]: Boogie Preprocessor took 44.55ms. Allocated memory is still 134.2MB. Free memory was 105.3MB in the beginning and 104.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:34:30,133 INFO L158 Benchmark]: RCFGBuilder took 376.97ms. Allocated memory is still 134.2MB. Free memory was 104.2MB in the beginning and 91.6MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:34:30,135 INFO L158 Benchmark]: TraceAbstraction took 271.92ms. Allocated memory is still 134.2MB. Free memory was 91.2MB in the beginning and 78.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:34:30,135 INFO L158 Benchmark]: Witness Printer took 4.87ms. Allocated memory is still 134.2MB. Free memory was 78.7MB in the beginning and 78.1MB in the end (delta: 566.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:34:30,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory was 60.7MB in the beginning and 60.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.06ms. Allocated memory was 107.0MB in the beginning and 134.2MB in the end (delta: 27.3MB). Free memory was 75.3MB in the beginning and 107.4MB in the end (delta: -32.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.48ms. Allocated memory is still 134.2MB. Free memory was 107.4MB in the beginning and 105.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.55ms. Allocated memory is still 134.2MB. Free memory was 105.3MB in the beginning and 104.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 376.97ms. Allocated memory is still 134.2MB. Free memory was 104.2MB in the beginning and 91.6MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 271.92ms. Allocated memory is still 134.2MB. Free memory was 91.2MB in the beginning and 78.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.87ms. Allocated memory is still 134.2MB. Free memory was 78.7MB in the beginning and 78.1MB in the end (delta: 566.2kB). 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 - 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 > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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 00:34:30,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/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_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/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_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/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_0962f5b9-1203-4370-9e52-c5f27fca49cd/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 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:34:32,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:34:32,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:34:32,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:34:32,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:34:32,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:34:32,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:34:32,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:34:32,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:34:32,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:34:32,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:34:32,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:34:32,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:34:32,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:34:32,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:34:32,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:34:32,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:34:32,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:34:32,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:34:32,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:34:32,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:34:32,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:34:32,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:34:32,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:34:32,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:34:32,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:34:32,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:34:32,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:34:32,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:34:32,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:34:32,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:34:32,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:34:32,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:34:32,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:34:32,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:34:32,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:34:32,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:34:32,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:34:32,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:34:32,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:34:32,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:34:32,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 00:34:32,976 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:34:32,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:34:32,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:34:32,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:34:32,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:34:32,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:34:32,980 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:34:32,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:34:32,981 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:34:32,981 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:34:32,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:34:32,982 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:34:32,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:34:32,985 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:34:32,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:34:32,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:34:32,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:34:32,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:34:32,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:34:32,986 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:34:32,986 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:34:32,987 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:34:32,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:34:32,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:34:32,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:34:32,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:34:32,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:34:32,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:34:32,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:34:32,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:34:32,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:34:32,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:34:32,990 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:34:32,990 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:34:32,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:34:32,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:34:32,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:34:32,991 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee [2021-11-21 00:34:33,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:34:33,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:34:33,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:34:33,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:34:33,468 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:34:33,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2021-11-21 00:34:33,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data/d2639e977/85f56e56f3bb4cc8a0d6c7073e93bb37/FLAG6fdbca346 [2021-11-21 00:34:34,014 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:34:34,015 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2021-11-21 00:34:34,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data/d2639e977/85f56e56f3bb4cc8a0d6c7073e93bb37/FLAG6fdbca346 [2021-11-21 00:34:34,382 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/data/d2639e977/85f56e56f3bb4cc8a0d6c7073e93bb37 [2021-11-21 00:34:34,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:34:34,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:34:34,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:34:34,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:34:34,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:34:34,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c356dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34, skipping insertion in model container [2021-11-21 00:34:34,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:34:34,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:34:34,581 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[1226,1239] [2021-11-21 00:34:34,608 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[2820,2833] [2021-11-21 00:34:34,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:34:34,639 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:34:34,670 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[1226,1239] [2021-11-21 00:34:34,706 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_0962f5b9-1203-4370-9e52-c5f27fca49cd/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[2820,2833] [2021-11-21 00:34:34,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:34:34,734 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:34:34,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34 WrapperNode [2021-11-21 00:34:34,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:34:34,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:34:34,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:34:34,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:34:34,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,812 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-21 00:34:34,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:34:34,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:34:34,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:34:34,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:34:34,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:34:34,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:34:34,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:34:34,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:34:34,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (1/1) ... [2021-11-21 00:34:34,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:34:34,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:34:34,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:34:34,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:34:34,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:34:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:34:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:34:34,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:34:35,084 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:34:35,086 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:34:41,205 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:34:41,211 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:34:41,211 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:34:41,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:41 BoogieIcfgContainer [2021-11-21 00:34:41,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:34:41,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:34:41,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:34:41,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:34:41,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:34:34" (1/3) ... [2021-11-21 00:34:41,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88ae68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:34:41, skipping insertion in model container [2021-11-21 00:34:41,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:34" (2/3) ... [2021-11-21 00:34:41,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88ae68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:34:41, skipping insertion in model container [2021-11-21 00:34:41,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:41" (3/3) ... [2021-11-21 00:34:41,224 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_4.i [2021-11-21 00:34:41,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:34:41,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:34:41,286 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:34:41,293 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 00:34:41,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:34:41,309 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 00:34:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:34:41,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:41,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:41,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:34:41,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:41,323 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-21 00:34:41,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:41,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204009643] [2021-11-21 00:34:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:41,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:41,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:41,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:41,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:34:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:42,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 00:34:42,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:42,687 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 00:34:42,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:42,765 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 00:34:42,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:42,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204009643] [2021-11-21 00:34:42,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204009643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:42,767 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:42,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:34:42,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010358797] [2021-11-21 00:34:42,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:42,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:34:42,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:34:42,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:34:42,812 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 00:34:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:42,828 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-21 00:34:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:34:42,830 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 00:34:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:42,838 INFO L225 Difference]: With dead ends: 47 [2021-11-21 00:34:42,838 INFO L226 Difference]: Without dead ends: 19 [2021-11-21 00:34:42,841 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 00:34:42,845 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 00:34:42,846 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 00:34:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-21 00:34:42,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-21 00:34:42,883 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 00:34:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-21 00:34:42,885 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-21 00:34:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:42,885 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-21 00:34:42,885 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 00:34:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-21 00:34:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:34:42,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:42,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:42,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:43,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:43,089 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:34:43,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:43,090 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-21 00:34:43,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:43,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495969223] [2021-11-21 00:34:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:43,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:43,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:43,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:43,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:34:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:34:49,007 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:36:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:36:57,921 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 00:36:57,921 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:36:57,923 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 00:36:57,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 00:36:57,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:36:58,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:36:58,130 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 00:36:58,133 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:36:58,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:36:58 BoogieIcfgContainer [2021-11-21 00:36:58,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:36:58,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:36:58,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:36:58,163 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:36:58,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:41" (3/4) ... [2021-11-21 00:36:58,166 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 00:36:58,221 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:36:58,221 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:36:58,224 INFO L158 Benchmark]: Toolchain (without parser) took 143837.75ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.0MB in the beginning and 42.7MB in the end (delta: -7.8MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-21 00:36:58,225 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:36:58,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.00ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 38.3MB in the end (delta: -3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:36:58,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.26ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 36.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:36:58,227 INFO L158 Benchmark]: Boogie Preprocessor took 77.45ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 35.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:36:58,228 INFO L158 Benchmark]: RCFGBuilder took 6322.49ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.0MB in the beginning and 52.3MB in the end (delta: -17.3MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-21 00:36:58,229 INFO L158 Benchmark]: TraceAbstraction took 136945.97ms. Allocated memory is still 71.3MB. Free memory was 51.7MB in the beginning and 44.5MB in the end (delta: 7.2MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2021-11-21 00:36:58,229 INFO L158 Benchmark]: Witness Printer took 60.09ms. Allocated memory is still 71.3MB. Free memory was 44.5MB in the beginning and 42.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:36:58,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.00ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 38.3MB in the end (delta: -3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.26ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 36.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 77.45ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 35.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6322.49ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.0MB in the beginning and 52.3MB in the end (delta: -17.3MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 136945.97ms. Allocated memory is still 71.3MB. Free memory was 51.7MB in the beginning and 44.5MB in the end (delta: 7.2MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Witness Printer took 60.09ms. Allocated memory is still 71.3MB. Free memory was 44.5MB in the beginning and 42.7MB 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 > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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)=-0.7463518977165222, \result=-0.6790159344673157, x=-0.7463518977165222] [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)=-0.7463518977165222, \result=0.7346484661102295, x=-0.7463518977165222] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.7463518977165222, x=0.1779213547706604] [L102] reach_error() VAL [IN=-0.7463518977165222, x=0.1779213547706604] - 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: 136.8s, 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, 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, 7.0s 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 00:36:58,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0962f5b9-1203-4370-9e52-c5f27fca49cd/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE