./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/sine_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/sine_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan --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 853868a88f6c6643cd6d627e66ad7d81e22e5804 ................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/sine_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan --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 853868a88f6c6643cd6d627e66ad7d81e22e5804 .......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:07:03,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:07:03,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:07:03,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:07:03,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:07:03,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:07:03,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:07:03,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:07:03,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:07:03,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:07:03,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:07:03,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:07:03,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:07:03,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:07:03,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:07:03,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:07:03,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:07:03,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:07:03,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:07:03,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:07:03,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:07:03,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:07:03,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:07:03,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:07:03,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:07:03,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:07:03,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:07:03,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:07:03,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:07:03,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:07:03,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:07:03,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:07:03,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:07:03,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:07:03,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:07:03,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:07:03,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:07:03,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:07:03,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:07:03,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:07:03,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:07:03,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:07:03,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:07:03,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:07:03,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:07:03,898 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:07:03,898 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:07:03,898 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:07:03,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:07:03,898 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:07:03,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:07:03,899 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:07:03,899 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:07:03,899 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:07:03,899 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:07:03,899 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:07:03,899 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:07:03,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:07:03,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:07:03,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:07:03,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:07:03,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:07:03,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:07:03,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:07:03,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:07:03,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:07:03,900 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:07:03,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:07:03,901 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:07:03,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:07:03,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:07:03,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:07:03,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:07:03,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:07:03,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:07:03,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:07:03,902 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:07:03,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:07:03,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:07:03,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:07:03,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:07:03,902 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-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 853868a88f6c6643cd6d627e66ad7d81e22e5804 [2020-12-09 19:07:04,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:07:04,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:07:04,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:07:04,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:07:04,119 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:07:04,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/sine_1.i [2020-12-09 19:07:04,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data/f0b247314/6bd159b12e6e42e6b65a94da53288b47/FLAG121384186 [2020-12-09 19:07:04,525 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:07:04,526 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/sv-benchmarks/c/floats-cdfpl/sine_1.i [2020-12-09 19:07:04,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data/f0b247314/6bd159b12e6e42e6b65a94da53288b47/FLAG121384186 [2020-12-09 19:07:04,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data/f0b247314/6bd159b12e6e42e6b65a94da53288b47 [2020-12-09 19:07:04,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:07:04,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:07:04,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:07:04,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:07:04,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:07:04,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd18a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04, skipping insertion in model container [2020-12-09 19:07:04,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:07:04,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:07:04,674 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/sv-benchmarks/c/floats-cdfpl/sine_1.i[1143,1156] [2020-12-09 19:07:04,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:07:04,683 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:07:04,694 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/sv-benchmarks/c/floats-cdfpl/sine_1.i[1143,1156] [2020-12-09 19:07:04,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:07:04,703 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:07:04,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04 WrapperNode [2020-12-09 19:07:04,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:07:04,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:07:04,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:07:04,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:07:04,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:07:04,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:07:04,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:07:04,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:07:04,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... [2020-12-09 19:07:04,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:07:04,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:07:04,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:07:04,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:07:04,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:07:04,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:07:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:07:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:07:04,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:07:04,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:07:04,976 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 19:07:04,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:07:04 BoogieIcfgContainer [2020-12-09 19:07:04,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:07:04,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:07:04,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:07:04,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:07:04,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:07:04" (1/3) ... [2020-12-09 19:07:04,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115ee1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:07:04, skipping insertion in model container [2020-12-09 19:07:04,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:04" (2/3) ... [2020-12-09 19:07:04,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115ee1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:07:04, skipping insertion in model container [2020-12-09 19:07:04,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:07:04" (3/3) ... [2020-12-09 19:07:04,984 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_1.i [2020-12-09 19:07:04,993 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:07:04,996 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:07:05,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:07:05,019 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:07:05,019 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:07:05,019 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:07:05,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:07:05,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:07:05,019 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:07:05,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:07:05,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:07:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-12-09 19:07:05,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 19:07:05,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:07:05,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 19:07:05,031 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:07:05,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:07:05,035 INFO L82 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2020-12-09 19:07:05,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:07:05,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413108752] [2020-12-09 19:07:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:07:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:07:05,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:07:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:07:05,127 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:07:05,140 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:07:05,141 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:07:05,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:07:05,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:07:05 BoogieIcfgContainer [2020-12-09 19:07:05,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:07:05,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:07:05,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:07:05,155 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:07:05,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:07:04" (3/4) ... [2020-12-09 19:07:05,158 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:07:05,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:07:05,160 INFO L168 Benchmark]: Toolchain (without parser) took 616.24 ms. Allocated memory is still 92.3 MB. Free memory was 52.1 MB in the beginning and 50.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:07:05,160 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 92.3 MB. Free memory is still 68.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:07:05,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.26 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 66.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-09 19:07:05,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.02 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:07:05,162 INFO L168 Benchmark]: Boogie Preprocessor took 12.90 ms. Allocated memory is still 92.3 MB. Free memory was 64.8 MB in the beginning and 63.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:07:05,163 INFO L168 Benchmark]: RCFGBuilder took 238.07 ms. Allocated memory is still 92.3 MB. Free memory was 63.7 MB in the beginning and 62.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:07:05,164 INFO L168 Benchmark]: TraceAbstraction took 175.87 ms. Allocated memory is still 92.3 MB. Free memory was 61.8 MB in the beginning and 50.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:07:05,164 INFO L168 Benchmark]: Witness Printer took 3.27 ms. Allocated memory is still 92.3 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:07:05,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 92.3 MB. Free memory is still 68.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 160.26 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 66.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.02 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.90 ms. Allocated memory is still 92.3 MB. Free memory was 64.8 MB in the beginning and 63.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 238.07 ms. Allocated memory is still 92.3 MB. Free memory was 63.7 MB in the beginning and 62.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 175.87 ms. Allocated memory is still 92.3 MB. Free memory was 61.8 MB in the beginning and 50.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.27 ms. Allocated memory is still 92.3 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 28]: 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 21, overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticFLOAToperation at line 25. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25] float result = x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L27] COND TRUE !(result <= 0.99 && result >= -0.99) [L28] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=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, 3 NumberOfCodeBlocks, 3 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:07:06,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:07:06,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:07:06,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:07:06,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:07:06,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:07:06,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:07:06,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:07:06,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:07:06,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:07:06,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:07:06,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:07:06,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:07:06,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:07:06,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:07:06,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:07:06,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:07:06,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:07:06,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:07:06,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:07:06,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:07:06,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:07:06,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:07:06,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:07:06,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:07:06,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:07:06,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:07:06,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:07:06,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:07:06,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:07:06,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:07:06,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:07:06,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:07:06,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:07:06,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:07:06,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:07:06,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:07:06,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:07:06,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:07:06,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:07:06,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:07:06,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 19:07:06,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:07:06,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:07:06,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:07:06,848 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:07:06,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:07:06,849 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:07:06,849 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:07:06,849 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:07:06,849 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:07:06,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:07:06,850 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:07:06,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:07:06,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:07:06,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:07:06,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:07:06,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:07:06,850 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:07:06,851 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:07:06,851 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:07:06,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:07:06,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:07:06,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:07:06,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:07:06,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:07:06,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:07:06,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:07:06,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:07:06,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:07:06,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:07:06,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:07:06,858 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:07:06,858 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:07:06,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:07:06,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:07:06,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:07:06,859 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-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 853868a88f6c6643cd6d627e66ad7d81e22e5804 [2020-12-09 19:07:07,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:07:07,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:07:07,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:07:07,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:07:07,130 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:07:07,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/sine_1.i [2020-12-09 19:07:07,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data/e453f5568/12814cda0fe0470c9cbc45f062034280/FLAGde7e2d54d [2020-12-09 19:07:07,556 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:07:07,556 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/sv-benchmarks/c/floats-cdfpl/sine_1.i [2020-12-09 19:07:07,561 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data/e453f5568/12814cda0fe0470c9cbc45f062034280/FLAGde7e2d54d [2020-12-09 19:07:07,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/data/e453f5568/12814cda0fe0470c9cbc45f062034280 [2020-12-09 19:07:07,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:07:07,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:07:07,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:07:07,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:07:07,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:07:07,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b93f086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07, skipping insertion in model container [2020-12-09 19:07:07,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:07:07,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:07:07,692 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/sv-benchmarks/c/floats-cdfpl/sine_1.i[1143,1156] [2020-12-09 19:07:07,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:07:07,704 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:07:07,716 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/sv-benchmarks/c/floats-cdfpl/sine_1.i[1143,1156] [2020-12-09 19:07:07,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:07:07,727 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:07:07,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07 WrapperNode [2020-12-09 19:07:07,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:07:07,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:07:07,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:07:07,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:07:07,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:07:07,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:07:07,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:07:07,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:07:07,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... [2020-12-09 19:07:07,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:07:07,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:07:07,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:07:07,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:07:07,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:07:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:07:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:07:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:07:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:07:10,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:07:10,378 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 19:07:10,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:07:10 BoogieIcfgContainer [2020-12-09 19:07:10,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:07:10,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:07:10,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:07:10,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:07:10,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:07:07" (1/3) ... [2020-12-09 19:07:10,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb13c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:07:10, skipping insertion in model container [2020-12-09 19:07:10,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:07:07" (2/3) ... [2020-12-09 19:07:10,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb13c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:07:10, skipping insertion in model container [2020-12-09 19:07:10,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:07:10" (3/3) ... [2020-12-09 19:07:10,385 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_1.i [2020-12-09 19:07:10,394 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:07:10,397 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:07:10,404 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:07:10,421 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:07:10,421 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:07:10,421 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:07:10,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:07:10,421 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:07:10,421 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:07:10,421 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:07:10,421 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:07:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 19:07:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:07:10,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:07:10,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:07:10,432 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:07:10,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:07:10,436 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-12-09 19:07:10,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:07:10,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830181441] [2020-12-09 19:07:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 19:07:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:07:10,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 19:07:10,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:07:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:07:11,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:07:11,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830181441] [2020-12-09 19:07:11,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:07:11,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:07:11,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666126290] [2020-12-09 19:07:11,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:07:11,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:07:11,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:07:11,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:07:11,019 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-12-09 19:07:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:07:11,028 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-09 19:07:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:07:11,029 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 19:07:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:07:11,034 INFO L225 Difference]: With dead ends: 19 [2020-12-09 19:07:11,035 INFO L226 Difference]: Without dead ends: 7 [2020-12-09 19:07:11,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:07:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-09 19:07:11,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-09 19:07:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-09 19:07:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-12-09 19:07:11,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-12-09 19:07:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:07:11,057 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-12-09 19:07:11,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:07:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-12-09 19:07:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:07:11,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:07:11,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:07:11,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:07:11,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:07:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:07:11,259 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-12-09 19:07:11,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:07:11,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478927318] [2020-12-09 19:07:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 19:07:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:07:13,124 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:14:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:14:27,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:14:27,375 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 19:14:27,375 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:14:27,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 19:14:27,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:14:27 BoogieIcfgContainer [2020-12-09 19:14:27,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:14:27,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:14:27,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:14:27,624 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:14:27,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:07:10" (3/4) ... [2020-12-09 19:14:27,627 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 19:14:27,651 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d3f623a6-4b7b-497d-a800-a959f3def011/bin/utaipan/witness.graphml [2020-12-09 19:14:27,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:14:27,652 INFO L168 Benchmark]: Toolchain (without parser) took 440077.64 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 48.6 MB in the beginning and 49.2 MB in the end (delta: -669.0 kB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:27,653 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 50.0 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:14:27,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.99 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 38.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:27,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.24 ms. Allocated memory is still 67.1 MB. Free memory was 38.0 MB in the beginning and 50.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:27,654 INFO L168 Benchmark]: Boogie Preprocessor took 24.49 ms. Allocated memory is still 67.1 MB. Free memory was 50.9 MB in the beginning and 49.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:14:27,654 INFO L168 Benchmark]: RCFGBuilder took 2588.86 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 38.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:27,655 INFO L168 Benchmark]: TraceAbstraction took 437242.55 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 38.6 MB in the beginning and 50.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:27,655 INFO L168 Benchmark]: Witness Printer took 27.45 ms. Allocated memory is still 88.1 MB. Free memory was 50.9 MB in the beginning and 49.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:14:27,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 50.0 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 152.99 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 38.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.24 ms. Allocated memory is still 67.1 MB. Free memory was 38.0 MB in the beginning and 50.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.49 ms. Allocated memory is still 67.1 MB. Free memory was 50.9 MB in the beginning and 49.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2588.86 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 38.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 437242.55 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 38.6 MB in the beginning and 50.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 27.45 ms. Allocated memory is still 88.1 MB. Free memory was 50.9 MB in the beginning and 49.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25] float result = x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L27] COND TRUE !(result <= 0.99 && result >= -0.99) [L28] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 437.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, 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, 2.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 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! Received shutdown request...