./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE --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 280b8fb8b8971dddeac309f519e287e5861d70c745bb226258306dd2e2fb70ff ................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE --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 280b8fb8b8971dddeac309f519e287e5861d70c745bb226258306dd2e2fb70ff .................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-e943c26 [2021-10-24 10:42:53,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:42:53,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:42:53,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:42:53,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:42:53,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:42:53,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:42:53,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:42:53,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:42:53,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:42:53,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:42:53,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:42:53,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:42:53,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:42:53,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:42:53,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:42:53,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:42:53,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:42:53,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:42:53,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:42:53,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:42:53,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:42:53,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:42:53,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:42:53,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:42:53,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:42:53,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:42:53,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:42:53,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:42:53,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:42:53,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:42:53,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:42:53,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:42:53,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:42:53,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:42:53,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:42:53,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:42:53,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:42:53,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:42:53,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:42:53,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:42:53,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:42:53,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:42:53,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:42:53,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:42:53,949 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:42:53,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:42:53,950 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:42:53,950 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:42:53,950 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:42:53,950 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:42:53,951 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:42:53,958 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:42:53,958 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:42:53,958 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:42:53,958 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:42:53,959 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:42:53,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:42:53,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:42:53,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:42:53,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:42:53,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:42:53,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:42:53,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:42:53,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:42:53,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:42:53,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:42:53,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:42:53,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:42:53,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:42:53,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:42:53,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:42:53,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:42:53,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:42:53,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:42:53,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:42:53,965 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:42:53,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:42:53,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:42:53,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:42:53,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:42:53,966 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_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 280b8fb8b8971dddeac309f519e287e5861d70c745bb226258306dd2e2fb70ff [2021-10-24 10:42:54,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:42:54,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:42:54,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:42:54,298 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:42:54,299 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:42:54,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-24 10:42:54,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data/e94e99b27/ac097a967c744cd49ec926ef93f5bc97/FLAG151a0fbed [2021-10-24 10:42:54,879 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:42:54,891 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-24 10:42:54,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data/e94e99b27/ac097a967c744cd49ec926ef93f5bc97/FLAG151a0fbed [2021-10-24 10:42:55,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data/e94e99b27/ac097a967c744cd49ec926ef93f5bc97 [2021-10-24 10:42:55,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:42:55,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:42:55,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:42:55,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:42:55,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:42:55,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eedf689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55, skipping insertion in model container [2021-10-24 10:42:55,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:42:55,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:42:55,474 WARN L228 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_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-24 10:42:55,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:42:55,487 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:42:55,506 WARN L228 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_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-24 10:42:55,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:42:55,520 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:42:55,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55 WrapperNode [2021-10-24 10:42:55,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:42:55,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:42:55,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:42:55,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:42:55,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:42:55,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:42:55,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:42:55,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:42:55,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:42:55,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:42:55,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:42:55,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:42:55,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (1/1) ... [2021-10-24 10:42:55,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:42:55,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:42:55,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:42:55,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:42:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:42:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:42:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:42:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:42:55,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:42:55,930 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-24 10:42:55,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:55 BoogieIcfgContainer [2021-10-24 10:42:55,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:42:55,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:42:55,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:42:55,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:42:55,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:42:55" (1/3) ... [2021-10-24 10:42:55,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d7ff3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:42:55, skipping insertion in model container [2021-10-24 10:42:55,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:55" (2/3) ... [2021-10-24 10:42:55,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d7ff3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:42:55, skipping insertion in model container [2021-10-24 10:42:55,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:55" (3/3) ... [2021-10-24 10:42:55,944 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-10-24 10:42:55,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:42:55,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:42:56,006 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:42:56,015 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 [2021-10-24 10:42:56,015 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:42:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-10-24 10:42:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:42:56,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:56,038 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:42:56,039 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:56,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:56,046 INFO L82 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-24 10:42:56,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:42:56,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901188253] [2021-10-24 10:42:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:56,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:42:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:42:56,176 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:42:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:42:56,223 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:42:56,225 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:42:56,227 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:42:56,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:42:56,237 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:42:56,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:42:56 BoogieIcfgContainer [2021-10-24 10:42:56,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:42:56,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:42:56,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:42:56,261 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:42:56,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:55" (3/4) ... [2021-10-24 10:42:56,266 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:42:56,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:42:56,285 INFO L168 Benchmark]: Toolchain (without parser) took 1059.92 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 39.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:56,286 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:42:56,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.60 ms. Allocated memory is still 94.4 MB. Free memory was 51.4 MB in the beginning and 67.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:56,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 94.4 MB. Free memory was 67.8 MB in the beginning and 66.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:42:56,289 INFO L168 Benchmark]: Boogie Preprocessor took 22.51 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 65.3 MB in the end (delta: 958.4 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:56,291 INFO L168 Benchmark]: RCFGBuilder took 353.54 ms. Allocated memory is still 94.4 MB. Free memory was 65.3 MB in the beginning and 53.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:56,292 INFO L168 Benchmark]: TraceAbstraction took 324.78 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 40.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:56,293 INFO L168 Benchmark]: Witness Printer took 21.58 ms. Allocated memory is still 94.4 MB. Free memory was 40.2 MB in the beginning and 39.9 MB in the end (delta: 241.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:42:56,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.60 ms. Allocated memory is still 94.4 MB. Free memory was 51.4 MB in the beginning and 67.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 94.4 MB. Free memory was 67.8 MB in the beginning and 66.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.51 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 65.3 MB in the end (delta: 958.4 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 353.54 ms. Allocated memory is still 94.4 MB. Free memory was 65.3 MB in the beginning and 53.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 324.78 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 40.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 21.58 ms. Allocated memory is still 94.4 MB. Free memory was 40.2 MB in the beginning and 39.9 MB in the end (delta: 241.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: 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 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 231.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.1ms SsaConstructionTime, 43.7ms SatisfiabilityAnalysisTime, 0.0ms 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 [2021-10-24 10:42:56,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:42:59,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:42:59,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:42:59,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:42:59,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:42:59,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:42:59,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:42:59,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:42:59,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:42:59,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:42:59,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:42:59,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:42:59,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:42:59,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:42:59,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:42:59,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:42:59,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:42:59,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:42:59,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:42:59,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:42:59,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:42:59,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:42:59,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:42:59,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:42:59,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:42:59,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:42:59,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:42:59,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:42:59,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:42:59,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:42:59,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:42:59,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:42:59,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:42:59,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:42:59,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:42:59,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:42:59,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:42:59,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:42:59,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:42:59,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:42:59,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:42:59,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:42:59,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:42:59,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:42:59,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:42:59,447 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:42:59,447 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:42:59,448 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:42:59,448 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:42:59,448 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:42:59,449 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:42:59,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:42:59,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:42:59,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:42:59,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:42:59,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:42:59,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:42:59,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:42:59,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:42:59,454 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:42:59,454 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:42:59,455 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:42:59,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:42:59,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:42:59,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:42:59,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:42:59,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:42:59,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:42:59,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:42:59,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:42:59,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:42:59,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:42:59,458 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:42:59,458 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:42:59,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:42:59,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:42:59,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:42:59,459 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_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 280b8fb8b8971dddeac309f519e287e5861d70c745bb226258306dd2e2fb70ff [2021-10-24 10:42:59,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:42:59,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:42:59,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:42:59,947 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:42:59,948 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:42:59,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-24 10:43:00,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data/1defb92cb/784b4708ebb44c5b8d7d7be72771fc17/FLAGc1f54b35c [2021-10-24 10:43:00,755 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:43:00,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-24 10:43:00,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data/1defb92cb/784b4708ebb44c5b8d7d7be72771fc17/FLAGc1f54b35c [2021-10-24 10:43:01,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/data/1defb92cb/784b4708ebb44c5b8d7d7be72771fc17 [2021-10-24 10:43:01,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:43:01,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:43:01,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:43:01,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:43:01,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:43:01,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57939d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01, skipping insertion in model container [2021-10-24 10:43:01,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:43:01,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:43:01,344 WARN L228 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_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-24 10:43:01,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:43:01,364 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:43:01,389 WARN L228 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_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-24 10:43:01,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:43:01,408 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:43:01,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01 WrapperNode [2021-10-24 10:43:01,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:43:01,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:43:01,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:43:01,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:43:01,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:43:01,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:43:01,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:43:01,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:43:01,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:43:01,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:43:01,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:43:01,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:43:01,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (1/1) ... [2021-10-24 10:43:01,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:43:01,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:43:01,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:43:01,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:43:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:43:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:43:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:43:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:43:08,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:43:08,577 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-24 10:43:08,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:43:08 BoogieIcfgContainer [2021-10-24 10:43:08,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:43:08,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:43:08,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:43:08,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:43:08,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:43:01" (1/3) ... [2021-10-24 10:43:08,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3891ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:43:08, skipping insertion in model container [2021-10-24 10:43:08,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:01" (2/3) ... [2021-10-24 10:43:08,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3891ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:43:08, skipping insertion in model container [2021-10-24 10:43:08,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:43:08" (3/3) ... [2021-10-24 10:43:08,590 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-10-24 10:43:08,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:43:08,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:43:08,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:43:08,663 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 [2021-10-24 10:43:08,663 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:43:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-10-24 10:43:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:43:08,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:43:08,687 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:43:08,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:43:08,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:43:08,695 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-24 10:43:08,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:43:08,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615874730] [2021-10-24 10:43:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:43:08,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:43:08,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:43:08,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:43:08,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:43:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:43:10,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:43:10,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:43:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:43:10,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:43:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:43:10,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:43:10,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615874730] [2021-10-24 10:43:10,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615874730] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:43:10,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:43:10,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:43:10,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367290382] [2021-10-24 10:43:10,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:43:10,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:43:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:43:10,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:43:10,467 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-24 10:43:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:43:10,484 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-24 10:43:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:43:10,486 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-24 10:43:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:43:10,496 INFO L225 Difference]: With dead ends: 23 [2021-10-24 10:43:10,496 INFO L226 Difference]: Without dead ends: 9 [2021-10-24 10:43:10,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:43:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-24 10:43:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-24 10:43:10,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2021-10-24 10:43:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-24 10:43:10,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-24 10:43:10,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:43:10,538 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-24 10:43:10,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-24 10:43:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-24 10:43:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:43:10,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:43:10,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:43:10,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 10:43:10,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:43:10,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:43:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:43:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-24 10:43:10,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:43:10,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710790297] [2021-10-24 10:43:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:43:10,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:43:10,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:43:10,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:43:10,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:43:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:43:19,608 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:44:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:44:15,937 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:44:15,938 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:44:15,941 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:44:15,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:44:16,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:44:16,161 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:44:16,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:44:16 BoogieIcfgContainer [2021-10-24 10:44:16,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:44:16,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:44:16,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:44:16,207 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:44:16,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:43:08" (3/4) ... [2021-10-24 10:44:16,210 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:44:16,268 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:44:16,268 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:44:16,270 INFO L168 Benchmark]: Toolchain (without parser) took 75159.65 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 44.3 MB in the beginning and 47.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:16,271 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 62.9 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:44:16,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.35 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 33.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:16,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 62.9 MB. Free memory was 33.4 MB in the beginning and 31.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:16,273 INFO L168 Benchmark]: Boogie Preprocessor took 32.22 ms. Allocated memory is still 62.9 MB. Free memory was 31.9 MB in the beginning and 30.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:44:16,274 INFO L168 Benchmark]: RCFGBuilder took 7090.34 ms. Allocated memory is still 62.9 MB. Free memory was 30.6 MB in the beginning and 38.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:16,275 INFO L168 Benchmark]: TraceAbstraction took 67623.02 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 38.4 MB in the beginning and 49.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:16,276 INFO L168 Benchmark]: Witness Printer took 62.60 ms. Allocated memory is still 79.7 MB. Free memory was 48.8 MB in the beginning and 47.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:16,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 62.9 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.35 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 33.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 62.9 MB. Free memory was 33.4 MB in the beginning and 31.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.22 ms. Allocated memory is still 62.9 MB. Free memory was 31.9 MB in the beginning and 30.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 7090.34 ms. Allocated memory is still 62.9 MB. Free memory was 30.6 MB in the beginning and 38.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 67623.02 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 38.4 MB in the beginning and 49.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Witness Printer took 62.60 ms. Allocated memory is still 79.7 MB. Free memory was 48.8 MB in the beginning and 47.1 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67507.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.8ms, AutomataDifference: 52.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.0ms SsaConstructionTime, 10164.3ms SatisfiabilityAnalysisTime, 266.7ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 10:44:16,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d2fcac1-e15a-468c-9e2d-42cd2d3346f1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...