./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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 0cdac738a6686958f2bf9395cbd2de35d90af6cad794e5c654284b73ac8b3868 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:04:59,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:04:59,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:05:00,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:05:00,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:05:00,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:05:00,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:05:00,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:05:00,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:05:00,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:05:00,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:05:00,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:05:00,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:05:00,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:05:00,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:05:00,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:05:00,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:05:00,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:05:00,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:05:00,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:05:00,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:05:00,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:05:00,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:05:00,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:05:00,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:05:00,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:05:00,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:05:00,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:05:00,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:05:00,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:05:00,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:05:00,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:05:00,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:05:00,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:05:00,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:05:00,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:05:00,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:05:00,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:05:00,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:05:00,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:05:00,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:05:00,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:05:00,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:05:00,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:05:00,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:05:00,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:05:00,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:05:00,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:05:00,090 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:05:00,090 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:05:00,090 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:05:00,090 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:05:00,091 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:05:00,091 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:05:00,091 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:05:00,091 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:05:00,092 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:05:00,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:05:00,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:05:00,092 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:05:00,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:05:00,093 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:05:00,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:05:00,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:05:00,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:05:00,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:05:00,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:05:00,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:05:00,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:05:00,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:05:00,095 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:05:00,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:05:00,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:05:00,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:05:00,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:05:00,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:05:00,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:05:00,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:05:00,097 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:05:00,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:05:00,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:05:00,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:05:00,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:05:00,098 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdac738a6686958f2bf9395cbd2de35d90af6cad794e5c654284b73ac8b3868 [2021-11-25 19:05:00,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:05:00,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:05:00,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:05:00,377 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:05:00,378 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:05:00,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i [2021-11-25 19:05:00,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data/2cc65df2d/2faccdb6fbad4a1eb7a350f61199c77d/FLAGbee0a32b4 [2021-11-25 19:05:00,991 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:05:00,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i [2021-11-25 19:05:01,011 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data/2cc65df2d/2faccdb6fbad4a1eb7a350f61199c77d/FLAGbee0a32b4 [2021-11-25 19:05:01,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data/2cc65df2d/2faccdb6fbad4a1eb7a350f61199c77d [2021-11-25 19:05:01,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:05:01,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:05:01,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:05:01,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:05:01,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:05:01,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6859b7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01, skipping insertion in model container [2021-11-25 19:05:01,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:05:01,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:05:01,569 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[1226,1239] [2021-11-25 19:05:01,598 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[2786,2799] [2021-11-25 19:05:01,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:05:01,612 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:05:01,624 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[1226,1239] [2021-11-25 19:05:01,635 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[2786,2799] [2021-11-25 19:05:01,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:05:01,649 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:05:01,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01 WrapperNode [2021-11-25 19:05:01,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:05:01,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:05:01,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:05:01,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:05:01,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,690 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-25 19:05:01,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:05:01,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:05:01,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:05:01,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:05:01,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:05:01,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:05:01,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:05:01,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:05:01,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (1/1) ... [2021-11-25 19:05:01,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:05:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:05:01,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:05:01,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:05:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:05:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:05:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:05:01,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:05:01,852 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:05:01,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:05:02,094 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:05:02,181 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:05:02,181 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:05:02,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:05:02 BoogieIcfgContainer [2021-11-25 19:05:02,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:05:02,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:05:02,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:05:02,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:05:02,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:05:01" (1/3) ... [2021-11-25 19:05:02,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179cec84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:05:02, skipping insertion in model container [2021-11-25 19:05:02,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:01" (2/3) ... [2021-11-25 19:05:02,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179cec84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:05:02, skipping insertion in model container [2021-11-25 19:05:02,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:05:02" (3/3) ... [2021-11-25 19:05:02,203 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_6.i [2021-11-25 19:05:02,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:05:02,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 19:05:02,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:05:02,260 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 19:05:02,261 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 19:05:02,274 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 19:05:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:05:02,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:02,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:05:02,280 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:02,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:02,285 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-25 19:05:02,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:02,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785655236] [2021-11-25 19:05:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:02,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:05:02,430 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:05:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:05:02,482 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:05:02,484 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:05:02,485 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 19:05:02,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 19:05:02,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:05:02,492 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 19:05:02,495 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:05:02,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:05:02 BoogieIcfgContainer [2021-11-25 19:05:02,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:05:02,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:05:02,523 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:05:02,523 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:05:02,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:05:02" (3/4) ... [2021-11-25 19:05:02,528 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:05:02,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:05:02,529 INFO L158 Benchmark]: Toolchain (without parser) took 1182.48ms. Allocated memory is still 94.4MB. Free memory was 53.4MB in the beginning and 39.0MB in the end (delta: 14.4MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-11-25 19:05:02,530 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:05:02,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.48ms. Allocated memory is still 94.4MB. Free memory was 53.2MB in the beginning and 68.5MB in the end (delta: -15.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 19:05:02,532 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.42ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 66.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:05:02,533 INFO L158 Benchmark]: Boogie Preprocessor took 25.79ms. Allocated memory is still 94.4MB. Free memory was 66.6MB in the beginning and 65.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:05:02,538 INFO L158 Benchmark]: RCFGBuilder took 465.58ms. Allocated memory is still 94.4MB. Free memory was 65.4MB in the beginning and 52.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:05:02,539 INFO L158 Benchmark]: TraceAbstraction took 333.39ms. Allocated memory is still 94.4MB. Free memory was 52.0MB in the beginning and 39.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:05:02,539 INFO L158 Benchmark]: Witness Printer took 5.53ms. Allocated memory is still 94.4MB. Free memory was 39.2MB in the beginning and 39.0MB in the end (delta: 257.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:05:02,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.48ms. Allocated memory is still 94.4MB. Free memory was 53.2MB in the beginning and 68.5MB in the end (delta: -15.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.42ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 66.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.79ms. Allocated memory is still 94.4MB. Free memory was 66.6MB in the beginning and 65.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 465.58ms. Allocated memory is still 94.4MB. Free memory was 65.4MB in the beginning and 52.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 333.39ms. Allocated memory is still 94.4MB. Free memory was 52.0MB in the beginning and 39.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.53ms. Allocated memory is still 94.4MB. Free memory was 39.2MB in the beginning and 39.0MB in the end (delta: 257.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:05:02,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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 0cdac738a6686958f2bf9395cbd2de35d90af6cad794e5c654284b73ac8b3868 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:05:05,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:05:05,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:05:05,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:05:05,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:05:05,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:05:05,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:05:05,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:05:05,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:05:05,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:05:05,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:05:05,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:05:05,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:05:05,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:05:05,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:05:05,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:05:05,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:05:05,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:05:05,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:05:05,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:05:05,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:05:05,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:05:05,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:05:05,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:05:05,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:05:05,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:05:05,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:05:05,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:05:05,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:05:05,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:05:05,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:05:05,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:05:05,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:05:05,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:05:05,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:05:05,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:05:05,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:05:05,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:05:05,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:05:05,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:05:05,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:05:05,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:05:05,172 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:05:05,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:05:05,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:05:05,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:05:05,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:05:05,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:05:05,175 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:05:05,175 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:05:05,175 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:05:05,175 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:05:05,176 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:05:05,177 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:05:05,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:05:05,178 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:05:05,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:05:05,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:05:05,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:05:05,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:05:05,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:05:05,179 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:05:05,179 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:05:05,180 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:05:05,180 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:05:05,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:05:05,180 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:05:05,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:05:05,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:05:05,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:05:05,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:05:05,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:05:05,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:05:05,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:05:05,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:05:05,182 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:05:05,182 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:05:05,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:05:05,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:05:05,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:05:05,183 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdac738a6686958f2bf9395cbd2de35d90af6cad794e5c654284b73ac8b3868 [2021-11-25 19:05:05,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:05:05,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:05:05,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:05:05,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:05:05,601 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:05:05,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_1+newton_1_6.i [2021-11-25 19:05:05,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data/58d91d2e5/80bbc8f7402c42c080d40a2c8ad17d76/FLAG42247a871 [2021-11-25 19:05:06,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:05:06,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i [2021-11-25 19:05:06,219 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data/58d91d2e5/80bbc8f7402c42c080d40a2c8ad17d76/FLAG42247a871 [2021-11-25 19:05:06,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/data/58d91d2e5/80bbc8f7402c42c080d40a2c8ad17d76 [2021-11-25 19:05:06,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:05:06,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:05:06,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:05:06,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:05:06,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:05:06,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f8f5f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06, skipping insertion in model container [2021-11-25 19:05:06,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:05:06,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:05:06,744 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[1226,1239] [2021-11-25 19:05:06,769 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[2786,2799] [2021-11-25 19:05:06,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:05:06,785 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:05:06,838 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[1226,1239] [2021-11-25 19:05:06,859 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_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/sv-benchmarks/c/combinations/gcd_1+newton_1_6.i[2786,2799] [2021-11-25 19:05:06,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:05:06,881 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:05:06,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06 WrapperNode [2021-11-25 19:05:06,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:05:06,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:05:06,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:05:06,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:05:06,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,922 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-25 19:05:06,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:05:06,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:05:06,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:05:06,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:05:06,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:05:06,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:05:06,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:05:06,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:05:06,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (1/1) ... [2021-11-25 19:05:06,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:05:06,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:05:06,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:05:07,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:05:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:05:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:05:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:05:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:05:07,101 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:05:07,102 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:05:13,388 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:05:13,394 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:05:13,395 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:05:13,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:05:13 BoogieIcfgContainer [2021-11-25 19:05:13,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:05:13,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:05:13,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:05:13,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:05:13,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:05:06" (1/3) ... [2021-11-25 19:05:13,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b76ae7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:05:13, skipping insertion in model container [2021-11-25 19:05:13,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:06" (2/3) ... [2021-11-25 19:05:13,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b76ae7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:05:13, skipping insertion in model container [2021-11-25 19:05:13,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:05:13" (3/3) ... [2021-11-25 19:05:13,404 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_6.i [2021-11-25 19:05:13,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:05:13,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 19:05:13,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:05:13,456 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 19:05:13,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 19:05:13,470 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 19:05:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:05:13,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:13,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:13,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:13,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:13,482 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-25 19:05:13,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:05:13,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397936184] [2021-11-25 19:05:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:13,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:05:13,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:05:13,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:05:13,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:05:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:14,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:05:14,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:14,721 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 19:05:14,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:05:14,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:05:14,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397936184] [2021-11-25 19:05:14,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397936184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:14,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:14,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:05:14,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188466783] [2021-11-25 19:05:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:14,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:05:14,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:05:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:05:14,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:05:14,760 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 19:05:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:14,775 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-25 19:05:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:05:14,777 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 19:05:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:14,784 INFO L225 Difference]: With dead ends: 46 [2021-11-25 19:05:14,785 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 19:05:14,788 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 19:05:14,791 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 19:05:14,792 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 19:05:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 19:05:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 19:05:14,820 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 19:05:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-25 19:05:14,822 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-25 19:05:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:14,823 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-25 19:05:14,823 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 19:05:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-25 19:05:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:05:14,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:14,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:14,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-25 19:05:15,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:05:15,038 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:15,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-25 19:05:15,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:05:15,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427827760] [2021-11-25 19:05:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:15,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:05:15,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:05:15,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:05:15,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:05:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:05:21,088 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:05:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:05:33,390 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 19:05:33,390 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:05:33,392 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 19:05:33,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 19:05:33,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:05:33,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:05:33,598 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 19:05:33,601 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:05:33,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:05:33 BoogieIcfgContainer [2021-11-25 19:05:33,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:05:33,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:05:33,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:05:33,646 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:05:33,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:05:13" (3/4) ... [2021-11-25 19:05:33,648 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 19:05:33,710 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:05:33,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:05:33,714 INFO L158 Benchmark]: Toolchain (without parser) took 27145.58ms. Allocated memory is still 71.3MB. Free memory was 56.2MB in the beginning and 36.9MB in the end (delta: 19.2MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-11-25 19:05:33,715 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 71.3MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:05:33,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.10ms. Allocated memory is still 71.3MB. Free memory was 56.0MB in the beginning and 54.2MB in the end (delta: 1.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:05:33,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.49ms. Allocated memory is still 71.3MB. Free memory was 54.0MB in the beginning and 52.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:05:33,717 INFO L158 Benchmark]: Boogie Preprocessor took 31.29ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 50.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:05:33,718 INFO L158 Benchmark]: RCFGBuilder took 6441.29ms. Allocated memory is still 71.3MB. Free memory was 50.8MB in the beginning and 39.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:05:33,718 INFO L158 Benchmark]: TraceAbstraction took 20246.80ms. Allocated memory is still 71.3MB. Free memory was 39.3MB in the beginning and 38.8MB in the end (delta: 578.4kB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. [2021-11-25 19:05:33,719 INFO L158 Benchmark]: Witness Printer took 67.45ms. Allocated memory is still 71.3MB. Free memory was 38.8MB in the beginning and 36.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:05:33,725 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 71.3MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.10ms. Allocated memory is still 71.3MB. Free memory was 56.0MB in the beginning and 54.2MB in the end (delta: 1.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.49ms. Allocated memory is still 71.3MB. Free memory was 54.0MB in the beginning and 52.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.29ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 50.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6441.29ms. Allocated memory is still 71.3MB. Free memory was 50.8MB in the beginning and 39.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20246.80ms. Allocated memory is still 71.3MB. Free memory was 39.3MB in the beginning and 38.8MB in the end (delta: 578.4kB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. * Witness Printer took 67.45ms. Allocated memory is still 71.3MB. Free memory was 38.8MB in the beginning and 36.9MB in the end (delta: 1.8MB). 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 > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.9217368364334106, \result=-0.7968756556510925, x=-0.9217368364334106] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.9217368364334106, \result=0.6061280369758606, x=-0.9217368364334106] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.9217368364334106, x=0.3929617404937744] [L102] reach_error() VAL [IN=-0.9217368364334106, x=0.3929617404937744] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 20.2s, 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, 7.0s SatisfiabilityAnalysisTime, 0.1s 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 19:05:33,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f00f48-5bee-4ab5-8cb3-59d77abe5e39/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