./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7 --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 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:58:14,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:58:14,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:58:14,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:58:14,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:58:14,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:58:14,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:58:14,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:58:14,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:58:14,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:58:14,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:58:14,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:58:14,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:58:14,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:58:14,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:58:14,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:58:14,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:58:14,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:58:14,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:58:14,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:58:14,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:58:14,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:58:14,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:58:14,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:58:14,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:58:14,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:58:14,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:58:14,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:58:14,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:58:14,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:58:14,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:58:14,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:58:14,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:58:14,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:58:14,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:58:14,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:58:14,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:58:14,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:58:14,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:58:14,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:58:14,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:58:14,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:58:14,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:58:14,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:58:14,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:58:14,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:58:14,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:58:14,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:58:14,784 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:58:14,784 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:58:14,785 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:58:14,785 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:58:14,786 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:58:14,787 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:58:14,787 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:58:14,787 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:58:14,788 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:58:14,788 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:58:14,788 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:58:14,789 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:58:14,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:58:14,790 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:58:14,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:58:14,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:58:14,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:58:14,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:58:14,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:58:14,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:58:14,794 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:58:14,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:58:14,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:58:14,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:58:14,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:58:14,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:58:14,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:58:14,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:58:14,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:58:14,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:58:14,797 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:58:14,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:58:14,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:58:14,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:58:14,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:58:14,799 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf [2021-11-25 17:58:15,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:58:15,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:58:15,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:58:15,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:58:15,217 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:58:15,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-11-25 17:58:15,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data/d1199ca07/605c2ed90ed545109dcae59c913a148a/FLAG8baa5776c [2021-11-25 17:58:15,858 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:58:15,858 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-11-25 17:58:15,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data/d1199ca07/605c2ed90ed545109dcae59c913a148a/FLAG8baa5776c [2021-11-25 17:58:16,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data/d1199ca07/605c2ed90ed545109dcae59c913a148a [2021-11-25 17:58:16,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:58:16,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:58:16,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:58:16,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:58:16,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:58:16,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15de8119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16, skipping insertion in model container [2021-11-25 17:58:16,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:58:16,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:58:16,459 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[1226,1239] [2021-11-25 17:58:16,529 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[2786,2799] [2021-11-25 17:58:16,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:58:16,539 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:58:16,555 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[1226,1239] [2021-11-25 17:58:16,584 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[2786,2799] [2021-11-25 17:58:16,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:58:16,606 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:58:16,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16 WrapperNode [2021-11-25 17:58:16,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:58:16,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:58:16,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:58:16,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:58:16,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,676 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-25 17:58:16,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:58:16,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:58:16,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:58:16,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:58:16,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:58:16,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:58:16,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:58:16,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:58:16,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (1/1) ... [2021-11-25 17:58:16,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:58:16,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:58:16,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:58:16,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:58:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:58:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:58:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:58:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:58:16,899 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:58:16,901 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:58:17,147 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:58:17,273 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:58:17,275 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:58:17,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:17 BoogieIcfgContainer [2021-11-25 17:58:17,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:58:17,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:58:17,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:58:17,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:58:17,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:58:16" (1/3) ... [2021-11-25 17:58:17,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b65934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:58:17, skipping insertion in model container [2021-11-25 17:58:17,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:16" (2/3) ... [2021-11-25 17:58:17,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b65934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:58:17, skipping insertion in model container [2021-11-25 17:58:17,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:17" (3/3) ... [2021-11-25 17:58:17,288 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_5.i [2021-11-25 17:58:17,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:58:17,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:58:17,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:58:17,407 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 [2021-11-25 17:58:17,407 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 17:58:17,463 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) [2021-11-25 17:58:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 17:58:17,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:17,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 17:58:17,498 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:58:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:17,505 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-25 17:58:17,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:17,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841152836] [2021-11-25 17:58:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:17,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:58:17,643 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:58:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:58:17,683 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 17:58:17,685 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:58:17,687 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 17:58:17,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 17:58:17,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:58:17,696 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 17:58:17,700 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:58:17,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:58:17 BoogieIcfgContainer [2021-11-25 17:58:17,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:58:17,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:58:17,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:58:17,726 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:58:17,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:17" (3/4) ... [2021-11-25 17:58:17,730 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 17:58:17,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:58:17,732 INFO L158 Benchmark]: Toolchain (without parser) took 1515.64ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.6MB in the beginning and 65.5MB in the end (delta: -21.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:58:17,733 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 79.7MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:58:17,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.99ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.4MB in the beginning and 71.9MB in the end (delta: -28.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-25 17:58:17,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.99ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 70.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:58:17,736 INFO L158 Benchmark]: Boogie Preprocessor took 35.32ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 68.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:58:17,737 INFO L158 Benchmark]: RCFGBuilder took 564.12ms. Allocated memory is still 96.5MB. Free memory was 68.8MB in the beginning and 56.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 17:58:17,737 INFO L158 Benchmark]: TraceAbstraction took 444.31ms. Allocated memory is still 96.5MB. Free memory was 55.7MB in the beginning and 65.8MB in the end (delta: -10.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:58:17,738 INFO L158 Benchmark]: Witness Printer took 5.27ms. Allocated memory is still 96.5MB. Free memory was 65.8MB in the beginning and 65.5MB in the end (delta: 341.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:58:17,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 79.7MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.99ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.4MB in the beginning and 71.9MB in the end (delta: -28.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.99ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 70.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.32ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 68.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 564.12ms. Allocated memory is still 96.5MB. Free memory was 68.8MB in the beginning and 56.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 444.31ms. Allocated memory is still 96.5MB. Free memory was 55.7MB in the beginning and 65.8MB in the end (delta: -10.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.27ms. Allocated memory is still 96.5MB. Free memory was 65.8MB in the beginning and 65.5MB in the end (delta: 341.7kB). 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 > -1.0f && IN < 1.0f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [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: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, 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 [2021-11-25 17:58:17,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7 --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 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:58:20,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:58:20,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:58:20,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:58:20,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:58:20,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:58:20,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:58:20,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:58:20,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:58:20,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:58:20,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:58:20,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:58:20,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:58:20,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:58:20,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:58:20,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:58:20,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:58:20,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:58:20,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:58:20,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:58:20,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:58:20,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:58:20,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:58:20,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:58:20,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:58:20,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:58:20,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:58:20,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:58:20,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:58:20,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:58:20,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:58:20,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:58:20,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:58:20,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:58:20,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:58:20,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:58:20,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:58:20,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:58:20,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:58:20,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:58:20,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:58:20,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 17:58:20,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:58:20,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:58:20,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:58:20,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:58:20,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:58:20,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:58:20,974 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:58:20,975 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:58:20,975 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:58:20,975 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:58:20,976 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:58:20,976 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:58:20,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:58:20,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:58:20,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:58:20,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:58:20,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:58:20,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:58:20,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:58:20,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 17:58:20,979 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 17:58:20,979 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 17:58:20,980 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:58:20,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:58:20,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:58:20,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:58:20,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:58:20,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 17:58:20,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:58:20,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:58:20,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:58:20,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:58:20,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:58:20,983 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 17:58:20,983 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 17:58:20,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:58:20,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:58:20,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:58:21,009 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf [2021-11-25 17:58:21,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:58:21,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:58:21,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:58:21,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:58:21,575 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:58:21,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-11-25 17:58:21,668 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data/ccf9fa39d/59656fbeae3847f8bd22556a12dc9494/FLAGfc29a4148 [2021-11-25 17:58:22,404 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:58:22,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-11-25 17:58:22,414 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data/ccf9fa39d/59656fbeae3847f8bd22556a12dc9494/FLAGfc29a4148 [2021-11-25 17:58:22,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/data/ccf9fa39d/59656fbeae3847f8bd22556a12dc9494 [2021-11-25 17:58:22,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:58:22,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:58:22,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:58:22,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:58:22,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:58:22,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:58:22" (1/1) ... [2021-11-25 17:58:22,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b1a497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:22, skipping insertion in model container [2021-11-25 17:58:22,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:58:22" (1/1) ... [2021-11-25 17:58:22,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:58:22,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:58:22,983 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[1226,1239] [2021-11-25 17:58:23,018 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[2786,2799] [2021-11-25 17:58:23,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:58:23,043 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:58:23,085 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[1226,1239] [2021-11-25 17:58:23,119 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_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[2786,2799] [2021-11-25 17:58:23,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:58:23,171 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:58:23,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23 WrapperNode [2021-11-25 17:58:23,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:58:23,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:58:23,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:58:23,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:58:23,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,256 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-25 17:58:23,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:58:23,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:58:23,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:58:23,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:58:23,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:58:23,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:58:23,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:58:23,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:58:23,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (1/1) ... [2021-11-25 17:58:23,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:58:23,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:58:23,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:58:23,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:58:23,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:58:23,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 17:58:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:58:23,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:58:23,531 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:58:23,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:58:30,473 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:58:30,481 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:58:30,481 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:58:30,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:30 BoogieIcfgContainer [2021-11-25 17:58:30,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:58:30,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:58:30,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:58:30,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:58:30,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:58:22" (1/3) ... [2021-11-25 17:58:30,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e9a4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:58:30, skipping insertion in model container [2021-11-25 17:58:30,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:58:23" (2/3) ... [2021-11-25 17:58:30,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e9a4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:58:30, skipping insertion in model container [2021-11-25 17:58:30,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:30" (3/3) ... [2021-11-25 17:58:30,495 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_5.i [2021-11-25 17:58:30,502 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:58:30,502 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:58:30,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:58:30,571 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 [2021-11-25 17:58:30,571 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 17:58:30,588 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) [2021-11-25 17:58:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:58:30,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:30,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:30,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:58:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:30,605 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-25 17:58:30,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:58:30,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964329606] [2021-11-25 17:58:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:30,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:58:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:58:30,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:58:30,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 17:58:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:32,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 17:58:32,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:58:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:32,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:58:32,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:58:32,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964329606] [2021-11-25 17:58:32,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964329606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:32,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:32,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:58:32,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815928734] [2021-11-25 17:58:32,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:32,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 17:58:32,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:58:32,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 17:58:32,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:58:32,607 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) [2021-11-25 17:58:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:32,627 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-25 17:58:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 17:58:32,630 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 [2021-11-25 17:58:32,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:32,640 INFO L225 Difference]: With dead ends: 46 [2021-11-25 17:58:32,641 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 17:58:32,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:58:32,649 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 [2021-11-25 17:58:32,651 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] [2021-11-25 17:58:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 17:58:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 17:58:32,683 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) [2021-11-25 17:58:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-25 17:58:32,686 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-25 17:58:32,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:32,686 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-25 17:58:32,687 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) [2021-11-25 17:58:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-25 17:58:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:58:32,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:32,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:32,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:58:32,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:58:32,905 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:58:32,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:32,906 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-25 17:58:32,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:58:32,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129861526] [2021-11-25 17:58:32,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:32,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:58:32,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:58:32,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:58:32,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 17:58:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:58:52,414 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:59:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:59:11,608 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 17:59:11,608 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:59:11,611 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 17:59:11,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 17:59:11,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:59:11,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:59:11,819 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 17:59:11,824 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:59:11,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:59:11 BoogieIcfgContainer [2021-11-25 17:59:11,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:59:11,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:59:11,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:59:11,873 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:59:11,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:30" (3/4) ... [2021-11-25 17:59:11,875 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 17:59:11,920 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 17:59:11,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:59:11,921 INFO L158 Benchmark]: Toolchain (without parser) took 49190.04ms. Allocated memory is still 77.6MB. Free memory was 60.5MB in the beginning and 43.9MB in the end (delta: 16.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2021-11-25 17:59:11,922 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 77.6MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:59:11,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.24ms. Allocated memory is still 77.6MB. Free memory was 60.5MB in the beginning and 59.5MB in the end (delta: 1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 17:59:11,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.30ms. Allocated memory is still 77.6MB. Free memory was 59.2MB in the beginning and 57.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:59:11,924 INFO L158 Benchmark]: Boogie Preprocessor took 78.69ms. Allocated memory is still 77.6MB. Free memory was 57.5MB in the beginning and 56.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:59:11,925 INFO L158 Benchmark]: RCFGBuilder took 7146.25ms. Allocated memory is still 77.6MB. Free memory was 56.0MB in the beginning and 45.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 17:59:11,925 INFO L158 Benchmark]: TraceAbstraction took 41385.53ms. Allocated memory is still 77.6MB. Free memory was 45.1MB in the beginning and 46.0MB in the end (delta: -907.1kB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2021-11-25 17:59:11,926 INFO L158 Benchmark]: Witness Printer took 48.18ms. Allocated memory is still 77.6MB. Free memory was 46.0MB in the beginning and 43.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:59:11,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 77.6MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 439.24ms. Allocated memory is still 77.6MB. Free memory was 60.5MB in the beginning and 59.5MB in the end (delta: 1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.30ms. Allocated memory is still 77.6MB. Free memory was 59.2MB in the beginning and 57.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 78.69ms. Allocated memory is still 77.6MB. Free memory was 57.5MB in the beginning and 56.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7146.25ms. Allocated memory is still 77.6MB. Free memory was 56.0MB in the beginning and 45.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 41385.53ms. Allocated memory is still 77.6MB. Free memory was 45.1MB in the beginning and 46.0MB in the end (delta: -907.1kB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Witness Printer took 48.18ms. Allocated memory is still 77.6MB. Free memory was 46.0MB in the beginning and 43.9MB in the end (delta: 2.1MB). 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 > -1.0f && IN < 1.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.8173828125, \result=-0.7294540405273438, x=-0.8173828125] [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)=-0.8173828125, \result=0.684955894947052, x=-0.8173828125] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.8173828125, x=0.24758219718933105] [L102] reach_error() VAL [IN=-0.8173828125, x=0.24758219718933105] - 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: 41.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 21.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 17:59:12,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36d14cd-0bf8-44d7-a788-4c0d62f42b48/bin/utaipan-eEHZpOm5b7/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